[Ubuntu-x-swat] [Bug 1522922] Re: Screen flickering in Intel i915 driver
*** This bug is a duplicate of bug 1554613 *** https://bugs.launchpad.net/bugs/1554613 As comment #117 suggests, disabling tlp fixes it for my Broadwell Celeron laptop. However, another way to fix it (at least for some of us) is to set ALPM to a higher power state, which means you can keep tlp enabled. In the tlp config file /etc/default/tlp, set the line SATA_LINKPWR_ON_BAT=min_power to SATA_LINKPWR_ON_BAT=medium_power or to SATA_LINKPWR_ON_BAT=max_performance. If not running tlp, add the same line to /etc/pm/config.d/sata_alpm (and probably also for SATA_LINKPWR_ON_AC). The problem with this solution is that on chips where the southbridge and cpu are packaged together (Broadwell, Haswell, etc.), the package won't go into lower power states, so battery suffers. For instance, I can't get it into anything lower than C2, as powertop indicates. -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xserver-xorg-video-intel in Ubuntu. https://bugs.launchpad.net/bugs/1522922 Title: Screen flickering in Intel i915 driver To manage notifications about this bug go to: https://bugs.launchpad.net/nouveau/+bug/1522922/+subscriptions ___ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp
[Ubuntu-x-swat] [Bug 1522922] Re: Screen flickering in Intel i915 driver
*** This bug is a duplicate of bug 1554613 *** https://bugs.launchpad.net/bugs/1554613 It happens for me with kernel 4.8.0-34-generic #36~16.04.1-Ubuntu . with xorg.conf from comment #129. The flashs start to appear once there is the message pointed in #130, i.e.: [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU pipe B FIFO underrun . The message appears only once for the first flash and then the flash appear more often but no more message in /var/log/kern.log. Adding drm.debug=14 does not enable more messages in that case. -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xserver-xorg-video-intel in Ubuntu. https://bugs.launchpad.net/bugs/1522922 Title: Screen flickering in Intel i915 driver To manage notifications about this bug go to: https://bugs.launchpad.net/nouveau/+bug/1522922/+subscriptions ___ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp
[Ubuntu-x-swat] [Bug 1522922] Re: Screen flickering in Intel i915 driver
*** This bug is a duplicate of bug 1554613 *** https://bugs.launchpad.net/bugs/1554613 I've a MacBook Pro, 4k Monitor from Samsung and the error / flickering occurs with the latest nightly build: [ 4921.690599] [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU pipe B FIFO underrun Linux kevin-MacBookPro 4.10.0-994-generic #201612282215 SMP Thu Dec 29 03:17:19 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xserver-xorg-video-intel in Ubuntu. https://bugs.launchpad.net/bugs/1522922 Title: Screen flickering in Intel i915 driver To manage notifications about this bug go to: https://bugs.launchpad.net/nouveau/+bug/1522922/+subscriptions ___ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp
[Ubuntu-x-swat] [Bug 1522922] Re: Screen flickering in Intel i915 driver
*** This bug is a duplicate of bug 1554613 *** https://bugs.launchpad.net/bugs/1554613 @John Smith: I have two older laptops with Intel chips, one Westmere and one Ivy Bridge architecture. Only one solution fixed the screen flickers on both laptop, installing the drm-intel-nightly kernel: http://kernel.ubuntu.com/~kernel-ppa/mainline/drm-intel-nightly/current/ I use this suggested config for Xorg, but I don't think it has any effect: Section "Device" Identifier "Intel Graphics" Driver "intel" Option "AccelMethod" "sna" Option "TearFree""true" Option "DRI""3" EndSection I tried many kernels versions, tinkering with the Xorg configm, but the nightly kernel was the real cure to use the intel driver in Xorg on my laptops. -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xserver-xorg-video-intel in Ubuntu. https://bugs.launchpad.net/bugs/1522922 Title: Screen flickering in Intel i915 driver To manage notifications about this bug go to: https://bugs.launchpad.net/nouveau/+bug/1522922/+subscriptions ___ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp
[Ubuntu-x-swat] [Bug 1522922] Re: Screen flickering in Intel i915 driver
*** This bug is a duplicate of bug 1554613 *** https://bugs.launchpad.net/bugs/1554613 I'm having this same issue on a Dell 7537 running Ubuntu 16.10 (kernel 4.8). The flickering that occurs is a rapid change in the brightness of the screen, in a random, persistently manner (it never stops). Not so often the screen goes all white and quickly returns to normal. It's interesting to mention that on Ubuntu 16.04 (kernel 4.4) the bug appears to be fixed, as the flickering does not occur. -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xserver-xorg-video-intel in Ubuntu. https://bugs.launchpad.net/bugs/1522922 Title: Screen flickering in Intel i915 driver To manage notifications about this bug go to: https://bugs.launchpad.net/nouveau/+bug/1522922/+subscriptions ___ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp
[Ubuntu-x-swat] [Bug 1522922] Re: Screen flickering in Intel i915 driver
*** This bug is a duplicate of bug 1554613 *** https://bugs.launchpad.net/bugs/1554613 Update: Now this bug is fixed for me in http://kernel.ubuntu.com /~kernel-ppa/mainline/v4.4.9-xenial/ as well. -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xserver-xorg-video-intel in Ubuntu. https://bugs.launchpad.net/bugs/1522922 Title: Screen flickering in Intel i915 driver To manage notifications about this bug go to: https://bugs.launchpad.net/nouveau/+bug/1522922/+subscriptions ___ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp
[Ubuntu-x-swat] [Bug 1522922] Re: Screen flickering in Intel i915 driver
*** This bug is a duplicate of bug 1554613 *** https://bugs.launchpad.net/bugs/1554613 ** This bug has been marked a duplicate of bug 1554613 screen flickering on XPS13 9350/9550 -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xserver-xorg-video-intel in Ubuntu. https://bugs.launchpad.net/bugs/1522922 Title: Screen flickering in Intel i915 driver To manage notifications about this bug go to: https://bugs.launchpad.net/nouveau/+bug/1522922/+subscriptions ___ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp
[Ubuntu-x-swat] [Bug 1522922] Re: Screen flickering in Intel i915 driver
I am affected by this bug on dell xps 13 9350 both on FHD and QHD. Running kernel 4.6rc5 from http://kernel.ubuntu.com/~kernel- ppa/mainline/v4.6-rc5-wily/ helps as a work-around. -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xserver-xorg-video-intel in Ubuntu. https://bugs.launchpad.net/bugs/1522922 Title: Screen flickering in Intel i915 driver To manage notifications about this bug go to: https://bugs.launchpad.net/nouveau/+bug/1522922/+subscriptions ___ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp
[Ubuntu-x-swat] [Bug 1522922]
There's one thing I still don't understand... the root of the problem was identified in https://bugs.freedesktop.org/show_bug.cgi?id=91393#c25 why hasn't an option to disable the introduced feature been introduced so far? Or even more, why not reverting completely? The introduced feature does not work for many of us, making the system unusable, which means that the feature does not work, period. while on kernel 4.2 that's the only option for me: download the kernel sources in ubuntu and revert the two commits and recompile. Would reverting the two commits still work on the new Ubuntu which comes with kernel 4.4? -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xserver-xorg-video-intel in Ubuntu. https://bugs.launchpad.net/bugs/1522922 Title: Screen flickering in Intel i915 driver To manage notifications about this bug go to: https://bugs.launchpad.net/nouveau/+bug/1522922/+subscriptions ___ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp
[Ubuntu-x-swat] [Bug 1522922] Re: Screen flickering in Intel i915 driver
** Attachment added: "i915_opregion" https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-intel/+bug/1522922/+attachment/4649569/+files/opregion2 -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xserver-xorg-video-intel in Ubuntu. https://bugs.launchpad.net/bugs/1522922 Title: Screen flickering in Intel i915 driver To manage notifications about this bug go to: https://bugs.launchpad.net/nouveau/+bug/1522922/+subscriptions ___ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp
[Ubuntu-x-swat] [Bug 1522922]
Simple question for anyone. What step would you have to do to apply these patch https://patchwork.freedesktop.org/patch/69394/ https://patchwork.freedesktop.org/patch/69395/ https://patchwork.freedesktop.org/patch/69396/ https://patchwork.freedesktop.org/patch/82206/ -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xserver-xorg-video-intel in Ubuntu. https://bugs.launchpad.net/bugs/1522922 Title: Screen flickering in Intel i915 driver To manage notifications about this bug go to: https://bugs.launchpad.net/nouveau/+bug/1522922/+subscriptions ___ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp
[Ubuntu-x-swat] [Bug 1522922]
Everyone hitting the issue, please attach /sys/kernel/debug/dri/0/i915_vbt (or if that doesn't exist, i915_opregion). Mika, just an idea... please check the vswing/pre-emph values in VBT. I'm not sure if we parse them in either the driver or intel_bios_reader. Check the VBT spec. Perhaps the VBT values are what we should be using regardless of what the actual link training does. -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xserver-xorg-video-intel in Ubuntu. https://bugs.launchpad.net/bugs/1522922 Title: Screen flickering in Intel i915 driver To manage notifications about this bug go to: https://bugs.launchpad.net/nouveau/+bug/1522922/+subscriptions ___ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp
[Ubuntu-x-swat] [Bug 1522922]
(In reply to alex from comment #112) > (In reply to Mika Kahola from comment #110) > > (In reply to alex from comment #109) > > > Dammit. Now this regression has made it into the LTS kernel. Are you > > > guys > > > kidding me? Is it not possible for the changes that caused this > > > exceptionally annoying regression (as in my computer is now almost > > > entirely > > > unusable) to be removed from the current production kernel, pending a > > > proper > > > fix? > > > > My current understanding is that there are multiple causes for flickering. > > Reverting this patch may solve an issue with one platform. Could you share > > your dmesg log with drm.debug=0x1e for further analysis, please. > > Posted. I rebooted into the stock 4.5.1 kernel (direct from the Arch > repository) with drm.debug=0x1e added to the kernel command line, logged in, > suspended, resumed, and dumped the log with journalctl. I took a quick > check through and didn't see any messages that indicated any sort of failure > after the suspend operation. However there are a lot of messages in there, > so I could have missed something. What I do know is that after the resume > from suspend, I get something on the order of a 2 Hz flicker on the display > that looks like the eDP link is flapping - i.e. there is tearing that > affects the bottom portion of the display more than the top due to the link > going down in the middle of a frame, portions of the display are briefly > distorted or colored strangely, etc. None of this happens on 4.1.21, which > is where I will stay until this gets a proper fix in the mainline. It seems that you have similar issue than we have seen before. During resume, the display driver tries to use the DP link parameters that was computed during the initial boot. However, the clock recovery is not obtained and hence the DP link is retrained. At this stage, the driver tries with 0 voltage swing and no pre-emphasis. For some reason the clock recovery is obtained and the DP link is set up with lower voltage swing and pre-emphasis settings than after the initial boot. I suggest that you try all these 4 patches on top of the drm-intel- nightly and report back if this set provides a fix or not https://patchwork.freedesktop.org/patch/69394/ https://patchwork.freedesktop.org/patch/69395/ https://patchwork.freedesktop.org/patch/69396/ https://patchwork.freedesktop.org/patch/82206/ -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xserver-xorg-video-intel in Ubuntu. https://bugs.launchpad.net/bugs/1522922 Title: Screen flickering in Intel i915 driver To manage notifications about this bug go to: https://bugs.launchpad.net/nouveau/+bug/1522922/+subscriptions ___ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp
[Ubuntu-x-swat] [Bug 1522922]
(In reply to Mika Kahola from comment #110) > (In reply to alex from comment #109) > > Dammit. Now this regression has made it into the LTS kernel. Are you guys > > kidding me? Is it not possible for the changes that caused this > > exceptionally annoying regression (as in my computer is now almost entirely > > unusable) to be removed from the current production kernel, pending a proper > > fix? > > My current understanding is that there are multiple causes for flickering. > Reverting this patch may solve an issue with one platform. Could you share > your dmesg log with drm.debug=0x1e for further analysis, please. Posted. I rebooted into the stock 4.5.1 kernel (direct from the Arch repository) with drm.debug=0x1e added to the kernel command line, logged in, suspended, resumed, and dumped the log with journalctl. I took a quick check through and didn't see any messages that indicated any sort of failure after the suspend operation. However there are a lot of messages in there, so I could have missed something. What I do know is that after the resume from suspend, I get something on the order of a 2 Hz flicker on the display that looks like the eDP link is flapping - i.e. there is tearing that affects the bottom portion of the display more than the top due to the link going down in the middle of a frame, portions of the display are briefly distorted or colored strangely, etc. None of this happens on 4.1.21, which is where I will stay until this gets a proper fix in the mainline. -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xserver-xorg-video-intel in Ubuntu. https://bugs.launchpad.net/bugs/1522922 Title: Screen flickering in Intel i915 driver To manage notifications about this bug go to: https://bugs.launchpad.net/nouveau/+bug/1522922/+subscriptions ___ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp
[Ubuntu-x-swat] [Bug 1522922]
Created attachment 123264 systemd logs with drm.debug=0x1e for stock 4.5.1 kernel (arch) with flicker after standby -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xserver-xorg-video-intel in Ubuntu. https://bugs.launchpad.net/bugs/1522922 Title: Screen flickering in Intel i915 driver To manage notifications about this bug go to: https://bugs.launchpad.net/nouveau/+bug/1522922/+subscriptions ___ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp
[Ubuntu-x-swat] [Bug 1522922]
(In reply to alex from comment #109) > Dammit. Now this regression has made it into the LTS kernel. Are you guys > kidding me? Is it not possible for the changes that caused this > exceptionally annoying regression (as in my computer is now almost entirely > unusable) to be removed from the current production kernel, pending a proper > fix? My current understanding is that there are multiple causes for flickering. Reverting this patch may solve an issue with one platform. Could you share your dmesg log with drm.debug=0x1e for further analysis, please. -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xserver-xorg-video-intel in Ubuntu. https://bugs.launchpad.net/bugs/1522922 Title: Screen flickering in Intel i915 driver To manage notifications about this bug go to: https://bugs.launchpad.net/nouveau/+bug/1522922/+subscriptions ___ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp
[Ubuntu-x-swat] [Bug 1522922] Re: Screen flickering in Intel i915 driver
I found something interesting that may or may not be valuable. From what I can gather so far, we're dealing with two flicker issues. One affects only Ubuntu MATE, the other affects regular Ubuntu as well. For me, I've been able to work around the problem in Ubuntu MATE by disabling tlp.service and rebooting. After I do this, I no longer deal with any flickering at all whatsoever. This work around won't work for everyone, but if you are hitting the bug in Ubuntu MATE (since Ubuntu MATE features tlp.service by default) this may work for you. Even though disabling tlp.service fixes it for me, this is still a kernel bug, because I can also fix this issue by side-loading an unsupported kernel without disabling tlp.service and that fixes it too. For whatever reason, tlp.service is triggering something in the kernel causing a flicker. -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xserver-xorg-video-intel in Ubuntu. https://bugs.launchpad.net/bugs/1522922 Title: Screen flickering in Intel i915 driver To manage notifications about this bug go to: https://bugs.launchpad.net/nouveau/+bug/1522922/+subscriptions ___ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp
[Ubuntu-x-swat] [Bug 1522922]
Dammit. Now this regression has made it into the LTS kernel. Are you guys kidding me? Is it not possible for the changes that caused this exceptionally annoying regression (as in my computer is now almost entirely unusable) to be removed from the current production kernel, pending a proper fix? -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xserver-xorg-video-intel in Ubuntu. https://bugs.launchpad.net/bugs/1522922 Title: Screen flickering in Intel i915 driver To manage notifications about this bug go to: https://bugs.launchpad.net/nouveau/+bug/1522922/+subscriptions ___ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp
[Ubuntu-x-swat] [Bug 1522922]
*** Bug 94593 has been marked as a duplicate of this bug. *** -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xserver-xorg-video-intel in Ubuntu. https://bugs.launchpad.net/bugs/1522922 Title: Screen flickering in Intel i915 driver To manage notifications about this bug go to: https://bugs.launchpad.net/nouveau/+bug/1522922/+subscriptions ___ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp
[Ubuntu-x-swat] [Bug 1522922]
(In reply to Pavel Procopiuc from comment #105) > (In reply to nhellwege from comment #103) > > On top of drm-intel-nightly or Ubuntu-4.4.0-18? > > Can't really say anything about 4.4, I successfully applied them on top of > 4.5, 4.6 and drm-nightly when I was checking them. So I applied all patches to drm-intel-next-2016-03-30 (tag from drm-intel-nightly). I still do have my specific error (underrun FIFO), which apparently results into black screen flickering: [1.307318] [drm] Finished loading i915/skl_dmc_ver1.bin (v1.26) [1.332959] [drm] Initialized i915 1.6.0 20160330 for :00:02.0 on minor 0 [2.711324] i915 :00:02.0: fb0: inteldrmfb frame buffer device [3.267095] snd_hda_intel :00:1f.3: bound :00:02.0 (ops i915_audio_component_bind_ops [i915]) [ 50.860161] i915 :00:02.0: BAR 6: [??? 0x flags 0x2] has bogus alignment [ 55.077891] i915 :00:02.0: BAR 6: [??? 0x flags 0x2] has bogus alignment [ 55.333444] [drm:intel_dp_link_training_clock_recovery [i915]] *ERROR* too many voltage retries, give up [ 728.412055] [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU pipe A FIFO underrun Thanks anyways, it was worth a try. btw: The bogus alignment and training clock error was after I recovered from suspend. -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xserver-xorg-video-intel in Ubuntu. https://bugs.launchpad.net/bugs/1522922 Title: Screen flickering in Intel i915 driver To manage notifications about this bug go to: https://bugs.launchpad.net/nouveau/+bug/1522922/+subscriptions ___ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp
[Ubuntu-x-swat] [Bug 1522922] Re: Screen flickering in Intel i915 driver
** Bug watch added: freedesktop.org Bugzilla #94479 https://bugs.freedesktop.org/show_bug.cgi?id=94479 -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xserver-xorg-video-intel in Ubuntu. https://bugs.launchpad.net/bugs/1522922 Title: Screen flickering in Intel i915 driver To manage notifications about this bug go to: https://bugs.launchpad.net/nouveau/+bug/1522922/+subscriptions ___ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp
[Ubuntu-x-swat] [Bug 1522922]
(In reply to Pavel Procopiuc from comment #102) > (In reply to nhellwege from comment #101) > > I am a bit lost in all these comments, could someone tell me what patch I > > can try to see if one of your patches has affect on my setup? > > These 4: > https://patchwork.freedesktop.org/patch/69394/ > https://patchwork.freedesktop.org/patch/69395/ > https://patchwork.freedesktop.org/patch/69396/ > https://patchwork.freedesktop.org/patch/82206/ On top of drm-intel-nightly or Ubuntu-4.4.0-18? Thanks! -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xserver-xorg-video-intel in Ubuntu. https://bugs.launchpad.net/bugs/1522922 Title: Screen flickering in Intel i915 driver To manage notifications about this bug go to: https://bugs.launchpad.net/nouveau/+bug/1522922/+subscriptions ___ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp
[Ubuntu-x-swat] [Bug 1522922]
(In reply to nhellwege from comment #101) > I am a bit lost in all these comments, could someone tell me what patch I > can try to see if one of your patches has affect on my setup? These 4: https://patchwork.freedesktop.org/patch/69394/ https://patchwork.freedesktop.org/patch/69395/ https://patchwork.freedesktop.org/patch/69396/ https://patchwork.freedesktop.org/patch/82206/ -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xserver-xorg-video-intel in Ubuntu. https://bugs.launchpad.net/bugs/1522922 Title: Screen flickering in Intel i915 driver To manage notifications about this bug go to: https://bugs.launchpad.net/nouveau/+bug/1522922/+subscriptions ___ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp
[Ubuntu-x-swat] [Bug 1522922]
(In reply to nhellwege from comment #103) > On top of drm-intel-nightly or Ubuntu-4.4.0-18? Can't really say anything about 4.4, I successfully applied them on top of 4.5, 4.6 and drm-nightly when I was checking them. -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xserver-xorg-video-intel in Ubuntu. https://bugs.launchpad.net/bugs/1522922 Title: Screen flickering in Intel i915 driver To manage notifications about this bug go to: https://bugs.launchpad.net/nouveau/+bug/1522922/+subscriptions ___ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp
[Ubuntu-x-swat] [Bug 1522922]
(In reply to nhellwege from comment #103) > (In reply to Pavel Procopiuc from comment #102) > > (In reply to nhellwege from comment #101) > > > I am a bit lost in all these comments, could someone tell me what patch I > > > can try to see if one of your patches has affect on my setup? > > > > These 4: > > https://patchwork.freedesktop.org/patch/69394/ > > https://patchwork.freedesktop.org/patch/69395/ > > https://patchwork.freedesktop.org/patch/69396/ > > https://patchwork.freedesktop.org/patch/82206/ > > On top of drm-intel-nightly or Ubuntu-4.4.0-18? > > Thanks! These applies to drm-intel-nightly. -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xserver-xorg-video-intel in Ubuntu. https://bugs.launchpad.net/bugs/1522922 Title: Screen flickering in Intel i915 driver To manage notifications about this bug go to: https://bugs.launchpad.net/nouveau/+bug/1522922/+subscriptions ___ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp
[Ubuntu-x-swat] [Bug 1522922]
(In reply to Mika Kahola from comment #100) > (In reply to Timo Aaltonen from comment #99) > > Has the latest patch even been sent to the list? At least I can't find it. > > Indeed, the patch wasn't on the list. Now you can review it from > > https://patchwork.freedesktop.org/patch/82206/ > > However, it seems that there are HW's out there that still have flickering > issues. Hi, today i tested kernel drm-intel-nightly (5f13745078ab86d9833a181980afc7888157a9a4) with patch 82206 applied and i still have the issue that sometimes my external screens turn to black and recover bit later. Sometimes one does not recover at all or is flickering afterwards. The dmesg log still shows some "[drm:gen8_de_irq_handler] The master control interrupt lied (SDE)!" messages. More sys infos here. https://bugs.freedesktop.org/show_bug.cgi?id=94479 -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xserver-xorg-video-intel in Ubuntu. https://bugs.launchpad.net/bugs/1522922 Title: Screen flickering in Intel i915 driver To manage notifications about this bug go to: https://bugs.launchpad.net/nouveau/+bug/1522922/+subscriptions ___ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp
[Ubuntu-x-swat] [Bug 1522922] Re: Screen flickering in Intel i915 driver
** Bug watch added: freedesktop.org Bugzilla #94593 https://bugs.freedesktop.org/show_bug.cgi?id=94593 -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xserver-xorg-video-intel in Ubuntu. https://bugs.launchpad.net/bugs/1522922 Title: Screen flickering in Intel i915 driver To manage notifications about this bug go to: https://bugs.launchpad.net/nouveau/+bug/1522922/+subscriptions ___ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp
[Ubuntu-x-swat] [Bug 1522922]
I am on a Dell XPS 13 9350 FullHD and I do have the Flicker under Kernel 4.4.0-18 on Ubuntu 16.04 LTS. I am a bit lost in all these comments, could someone tell me what patch I can try to see if one of your patches has affect on my setup? There is also a Bug report related to this one over here: https://bugs.freedesktop.org/show_bug.cgi?id=94593 -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xserver-xorg-video-intel in Ubuntu. https://bugs.launchpad.net/bugs/1522922 Title: Screen flickering in Intel i915 driver To manage notifications about this bug go to: https://bugs.launchpad.net/nouveau/+bug/1522922/+subscriptions ___ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp
[Ubuntu-x-swat] [Bug 1522922]
(In reply to Timo Aaltonen from comment #99) > Has the latest patch even been sent to the list? At least I can't find it. Indeed, the patch wasn't on the list. Now you can review it from https://patchwork.freedesktop.org/patch/82206/ However, it seems that there are HW's out there that still have flickering issues. -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xserver-xorg-video-intel in Ubuntu. https://bugs.launchpad.net/bugs/1522922 Title: Screen flickering in Intel i915 driver To manage notifications about this bug go to: https://bugs.launchpad.net/nouveau/+bug/1522922/+subscriptions ___ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp
[Ubuntu-x-swat] [Bug 1522922]
Has the latest patch even been sent to the list? At least I can't find it. -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xserver-xorg-video-intel in Ubuntu. https://bugs.launchpad.net/bugs/1522922 Title: Screen flickering in Intel i915 driver To manage notifications about this bug go to: https://bugs.launchpad.net/nouveau/+bug/1522922/+subscriptions ___ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp
[Ubuntu-x-swat] [Bug 1522922]
So, eight months since this has been reported and you guys can't even be bothered to at least revert the changes that caused this originally? The normal kernel is completely unusable on my machine due to this issue (Dell XPS 15 (9530)) so I have been forced to run the LTS kernel for the past several months. -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xserver-xorg-video-intel in Ubuntu. https://bugs.launchpad.net/bugs/1522922 Title: Screen flickering in Intel i915 driver To manage notifications about this bug go to: https://bugs.launchpad.net/nouveau/+bug/1522922/+subscriptions ___ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp
[Ubuntu-x-swat] [Bug 1522922] Re: Screen flickering in Intel i915 driver
That sounds much more like the issue I'm seeing, which I raised against Ubuntu Mate (1558736) as it seems to only affect that DE with the 16.04 Beta builds. Both Alphas were fine and other DEs with the same nightlies were fine. However, that bug was marked as a duplicate of this one, though I'm not yet convinced. I found that the screen wouldn't blank out when I was charging the battery - it only happens when running on battery power. It's a Dell XPS13 9350, with Intel Skylake integrated graphics - more info in https://bugs.launchpad.net/bugs/1558736. -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xserver-xorg-video-intel in Ubuntu. https://bugs.launchpad.net/bugs/1522922 Title: Screen flickering in Intel i915 driver To manage notifications about this bug go to: https://bugs.launchpad.net/nouveau/+bug/1522922/+subscriptions ___ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp
[Ubuntu-x-swat] [Bug 1522922]
(In reply to thoehlig from comment #95) > Are these patches in latest-drm-nightly already? Not yet. These patches needs to be reviewed first. -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xserver-xorg-video-intel in Ubuntu. https://bugs.launchpad.net/bugs/1522922 Title: Screen flickering in Intel i915 driver To manage notifications about this bug go to: https://bugs.launchpad.net/nouveau/+bug/1522922/+subscriptions ___ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp
[Ubuntu-x-swat] [Bug 1522922]
Still having the issue of flickering on my HSW eDP with drm-intel- nightly + v6 patchset + Cache DP signal levels. Then again my flickering is different and likely a different issue. It's black flashes of the entire screen, for about the same duration yet at seemingly random intervals (incl. when idling) and much less frequent. -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xserver-xorg-video-intel in Ubuntu. https://bugs.launchpad.net/bugs/1522922 Title: Screen flickering in Intel i915 driver To manage notifications about this bug go to: https://bugs.launchpad.net/nouveau/+bug/1522922/+subscriptions ___ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp
[Ubuntu-x-swat] [Bug 1522922]
(In reply to Mika Kahola from comment #93) > Great that the patches worked out for you. I guess its time to upstream > these patches. It would be great if you could upstream it before Ubuntu Xenial is released. -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xserver-xorg-video-intel in Ubuntu. https://bugs.launchpad.net/bugs/1522922 Title: Screen flickering in Intel i915 driver To manage notifications about this bug go to: https://bugs.launchpad.net/nouveau/+bug/1522922/+subscriptions ___ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp
[Ubuntu-x-swat] [Bug 1522922]
Are these patches in latest-drm-nightly already? -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xserver-xorg-video-intel in Ubuntu. https://bugs.launchpad.net/bugs/1522922 Title: Screen flickering in Intel i915 driver To manage notifications about this bug go to: https://bugs.launchpad.net/nouveau/+bug/1522922/+subscriptions ___ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp
[Ubuntu-x-swat] [Bug 1522922]
Great that the patches worked out for you. I guess its time to upstream these patches. -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xserver-xorg-video-intel in Ubuntu. https://bugs.launchpad.net/bugs/1522922 Title: Screen flickering in Intel i915 driver To manage notifications about this bug go to: https://bugs.launchpad.net/nouveau/+bug/1522922/+subscriptions ___ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp
[Ubuntu-x-swat] [Bug 1522922]
Created attachment 122497 Cache DP signal levels In your case, when DP link is retrained with the settings from previous link training the clock recovery fails. This leads into a situation where link training is started from scratch. However, now the clock recovery seems to be happy with the lower voltage swing and pre-emphasis settings than with the first iteration round. You may experience flickering due to this as the physical link may require higher voltage swing or pre-emphasis than provided. We could try the following trick here. Let's cache the signal levels and in case of link retraining we retrain the link until we have reached the previously trained signal levels and clock recovery is reached. Please, give this a go on top of the latest drm-intel-nightly with these 3 patches applied. Dmesg logs are appreciated too ;) -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xserver-xorg-video-intel in Ubuntu. https://bugs.launchpad.net/bugs/1522922 Title: Screen flickering in Intel i915 driver To manage notifications about this bug go to: https://bugs.launchpad.net/nouveau/+bug/1522922/+subscriptions ___ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp
[Ubuntu-x-swat] [Bug 1522922]
I was applying patches against 6f78897 of drm-intel. All 4 patches also apply against vanilla 4.5.0 also fixing the issue. -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xserver-xorg-video-intel in Ubuntu. https://bugs.launchpad.net/bugs/1522922 Title: Screen flickering in Intel i915 driver To manage notifications about this bug go to: https://bugs.launchpad.net/nouveau/+bug/1522922/+subscriptions ___ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp
[Ubuntu-x-swat] [Bug 1522922]
Created attachment 122517 dmesg after 0004-drm-i915-Cache-DisplayPort-link-signal-levels.patch It works, I'm not seeing any flicker or repainting issues anymore. Thank you! I'm still attaching the dmesg. This one covers messages from the boot until about 30 seconds after DPMS. -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xserver-xorg-video-intel in Ubuntu. https://bugs.launchpad.net/bugs/1522922 Title: Screen flickering in Intel i915 driver To manage notifications about this bug go to: https://bugs.launchpad.net/nouveau/+bug/1522922/+subscriptions ___ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp
[Ubuntu-x-swat] [Bug 1522922]
(In reply to Pavel Procopiuc from comment #86) > Created attachment 122363 [details] > dmesg-intel-nightly-patches > > Here it is, it's from drm-intel kernel on commit 9f8709f + 3 patches you > provided. I took a dmesg right after boot (while there was no flickering) > and then did "xset dpms force off", panel turned off, I waited for a couple > of seconds, did some input activity, panel turned on and flicker appeared, I > waited for about 30 seconds and took another dmesg, but there were no > changes between them. Plus I don't see too much debug information in the > dmesg. Am I missing some kernel parameter? Sorry, I forgot to mention that you need to include the following kernel parameters in order to enable debugging info. So, can you rerun the test with these parameters in place, please drm.debug=0x1e log_buf_len=1M -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xserver-xorg-video-intel in Ubuntu. https://bugs.launchpad.net/bugs/1522922 Title: Screen flickering in Intel i915 driver To manage notifications about this bug go to: https://bugs.launchpad.net/nouveau/+bug/1522922/+subscriptions ___ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp
[Ubuntu-x-swat] [Bug 1522922]
Created attachment 122338 no-flicker-after-dpms-4.5.patch Kernel 4.5.0 still has this bug for me. I managed to narrow down the patch to remedy the flickering to just one hunk though. -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xserver-xorg-video-intel in Ubuntu. https://bugs.launchpad.net/bugs/1522922 Title: Screen flickering in Intel i915 driver To manage notifications about this bug go to: https://bugs.launchpad.net/nouveau/+bug/1522922/+subscriptions ___ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp
[Ubuntu-x-swat] [Bug 1522922]
I tried them way back in January with no visible difference, flickering still appears after laptop panel turns off and back on. Regarding dmesg, can you please tell me for which kernel you want to see it (intel-drm-next/vanilla), with those patches or without and which additional kernel debugging options should be enabled? -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xserver-xorg-video-intel in Ubuntu. https://bugs.launchpad.net/bugs/1522922 Title: Screen flickering in Intel i915 driver To manage notifications about this bug go to: https://bugs.launchpad.net/nouveau/+bug/1522922/+subscriptions ___ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp
[Ubuntu-x-swat] [Bug 1522922]
Started a few weeks ago to get this with my HSW 4200U laptop. Dunno the exact date, but I've been using drm-intel-nightly all the time, so presumably since PSR was default enabled. /sys/kernel/debug/dri/0/i915_edp_psr_status Sink_Support: yes Source_OK: yes Enabled: yes Active: yes Busy frontbuffer bits: 0x000 Re-enable work scheduled: no Main link in standby mode: no HW Enabled & Active bit: yes Performance_Counter: 50578 /sys/kernel/debug/dri/0/i915_fbc_status FBC disabled: FBC enabled (active or scheduled) Compressing: yes /sys/kernel/debug/dri/0/i915_ips_status Enabled by kernel parameter: yes Currently: enabled I've tried with the v6 "Disable fast link training if DP config changes" patchset applied, no apparent change. -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xserver-xorg-video-intel in Ubuntu. https://bugs.launchpad.net/bugs/1522922 Title: Screen flickering in Intel i915 driver To manage notifications about this bug go to: https://bugs.launchpad.net/nouveau/+bug/1522922/+subscriptions ___ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp
[Ubuntu-x-swat] [Bug 1522922]
Created attachment 122406 dmesg-after-flicker Here are the two dmesg dumps, same kernel, same patches, but with the options you mentioned. They are different this time. One thing I also noticed is that there is not only flicker, but sometimes old screen content is used for a moment. Like in virtual console cursor suddenly jumps back where it was moments ago and then back to its current location. These jumps only happen during flicker. -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xserver-xorg-video-intel in Ubuntu. https://bugs.launchpad.net/bugs/1522922 Title: Screen flickering in Intel i915 driver To manage notifications about this bug go to: https://bugs.launchpad.net/nouveau/+bug/1522922/+subscriptions ___ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp
[Ubuntu-x-swat] [Bug 1522922]
(In reply to Pavel Procopiuc from comment #84) > I tried them way back in January with no visible difference, flickering > still appears after laptop panel turns off and back on. > > Regarding dmesg, can you please tell me for which kernel you want to see it > (intel-drm-next/vanilla), with those patches or without and which additional > kernel debugging options should be enabled? If you can run dmesg with drm-intel-nightly kernel and if you could apply those patches too, so we could get more debug info as well. -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xserver-xorg-video-intel in Ubuntu. https://bugs.launchpad.net/bugs/1522922 Title: Screen flickering in Intel i915 driver To manage notifications about this bug go to: https://bugs.launchpad.net/nouveau/+bug/1522922/+subscriptions ___ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp
[Ubuntu-x-swat] [Bug 1522922]
Created attachment 122405 dmesg-before-flicker -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xserver-xorg-video-intel in Ubuntu. https://bugs.launchpad.net/bugs/1522922 Title: Screen flickering in Intel i915 driver To manage notifications about this bug go to: https://bugs.launchpad.net/nouveau/+bug/1522922/+subscriptions ___ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp
[Ubuntu-x-swat] [Bug 1522922]
Created attachment 122363 dmesg-intel-nightly-patches Here it is, it's from drm-intel kernel on commit 9f8709f + 3 patches you provided. I took a dmesg right after boot (while there was no flickering) and then did "xset dpms force off", panel turned off, I waited for a couple of seconds, did some input activity, panel turned on and flicker appeared, I waited for about 30 seconds and took another dmesg, but there were no changes between them. Plus I don't see too much debug information in the dmesg. Am I missing some kernel parameter? -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xserver-xorg-video-intel in Ubuntu. https://bugs.launchpad.net/bugs/1522922 Title: Screen flickering in Intel i915 driver To manage notifications about this bug go to: https://bugs.launchpad.net/nouveau/+bug/1522922/+subscriptions ___ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp
[Ubuntu-x-swat] [Bug 1522922]
(In reply to Pavel Procopiuc from comment #82) > Created attachment 122338 [details] [review] > no-flicker-after-dpms-4.5.patch > > Kernel 4.5.0 still has this bug for me. I managed to narrow down the patch > to remedy the flickering to just one hunk though. Did you try these patches? https://patchwork.freedesktop.org/patch/69394/ https://patchwork.freedesktop.org/patch/69395/ https://patchwork.freedesktop.org/patch/69396/ In addition, if you could provide your dmesg log as well. I would be interested to know if we fail on clock recovery or not. -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xserver-xorg-video-intel in Ubuntu. https://bugs.launchpad.net/bugs/1522922 Title: Screen flickering in Intel i915 driver To manage notifications about this bug go to: https://bugs.launchpad.net/nouveau/+bug/1522922/+subscriptions ___ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp
[Ubuntu-x-swat] [Bug 1522922]
Hi Mika Yes, applying patch 66697 against the latest intel-drm-nightly does still resolve the issue. -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xserver-xorg-video-intel in Ubuntu. https://bugs.launchpad.net/bugs/1522922 Title: Screen flickering in Intel i915 driver To manage notifications about this bug go to: https://bugs.launchpad.net/nouveau/+bug/1522922/+subscriptions ___ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp
[Ubuntu-x-swat] [Bug 1522922]
I tested ubuntu Xenial beta, which has the following kernel Linux ubuntu 4.4.0-9-generic #24-Ubuntu SMP Mon Feb 29 19:33:19 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux The bug is still there... it happens not only if you decrease the resolution, but also with the higher resolution after resuming from screen saver. -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xserver-xorg-video-intel in Ubuntu. https://bugs.launchpad.net/bugs/1522922 Title: Screen flickering in Intel i915 driver To manage notifications about this bug go to: https://bugs.launchpad.net/nouveau/+bug/1522922/+subscriptions ___ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp
[Ubuntu-x-swat] [Bug 1522922]
It seems that we have something else causing a regression than this link training optimization feature. Any chance to do bisecting with patch 66697 applied? -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xserver-xorg-video-intel in Ubuntu. https://bugs.launchpad.net/bugs/1522922 Title: Screen flickering in Intel i915 driver To manage notifications about this bug go to: https://bugs.launchpad.net/nouveau/+bug/1522922/+subscriptions ___ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp
[Ubuntu-x-swat] [Bug 1522922]
Created attachment 121148 In my case it crashes the PC. Got a kdump. see also https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1535048 -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xserver-xorg-video-intel in Ubuntu. https://bugs.launchpad.net/bugs/1522922 Title: Screen flickering in Intel i915 driver To manage notifications about this bug go to: https://bugs.launchpad.net/nouveau/+bug/1522922/+subscriptions ___ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp
[Ubuntu-x-swat] [Bug 1522922]
I reinstalled Ubuntu 15.10 from a DVD iso. Problem fixed. Linux toshibaS75 4.2.0-27-generic #32-Ubuntu SMP Fri Jan 22 04:49:08 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xserver-xorg-video-intel in Ubuntu. https://bugs.launchpad.net/bugs/1522922 Title: Screen flickering in Intel i915 driver To manage notifications about this bug go to: https://bugs.launchpad.net/nouveau/+bug/1522922/+subscriptions ___ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp
[Ubuntu-x-swat] [Bug 1522922]
Also reported in (https://bugs.launchpad.net/ubuntu/+source/libdrm/+bug/1522922). -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xserver-xorg-video-intel in Ubuntu. https://bugs.launchpad.net/bugs/1522922 Title: Screen flickering in Intel i915 driver To manage notifications about this bug go to: https://bugs.launchpad.net/nouveau/+bug/1522922/+subscriptions ___ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp
[Ubuntu-x-swat] [Bug 1522922]
(In reply to jlrivitti from comment #78) > I reinstalled Ubuntu 15.10 from a DVD iso. Problem fixed. > Linux toshibaS75 4.2.0-27-generic #32-Ubuntu SMP Fri Jan 22 04:49:08 UTC > 2016 x86_64 x86_64 x86_64 GNU/Linux I've just tried 4.2.0-27-generic and the flickering is still there -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xserver-xorg-video-intel in Ubuntu. https://bugs.launchpad.net/bugs/1522922 Title: Screen flickering in Intel i915 driver To manage notifications about this bug go to: https://bugs.launchpad.net/nouveau/+bug/1522922/+subscriptions ___ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp
[Ubuntu-x-swat] [Bug 1522922]
(In reply to Tom Furniss from comment #72) > Hi Mika > > Yes, applying patch 66697 against the latest intel-drm-nightly does still > resolve the issue. Actually, within 10 seconds of posting that message the flickering started again, and has continued through multiple reboots. So I think I can safely say that the last version of the kernel patched with 66697 that resolved the issue was 4.3.0 rc3. -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xserver-xorg-video-intel in Ubuntu. https://bugs.launchpad.net/bugs/1522922 Title: Screen flickering in Intel i915 driver To manage notifications about this bug go to: https://bugs.launchpad.net/nouveau/+bug/1522922/+subscriptions ___ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp
[Ubuntu-x-swat] [Bug 1522922]
I have a similar problem since 2014. https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1271704 Toshiba Satellite S75-A7334, i7-4700MQ. *-display descrição: VGA compatible controller produto: 4th Gen Core Processor Integrated Graphics Controller fabricante: Intel Corporation ID físico: 2 informações do barramento: pci@:00:02.0 versão: 06 largura: 64 bits clock: 33MHz capacidades: msi pm vga_controller bus_master cap_list rom configuração: driver=i915 latency=0 recursos: irq:45 memória:b200-b23f memória:a000-afff porta de E/S:6000(tamanho=64) Ubuntu 15.10. Linux 3.13.0-37-generic #64-Ubuntu intel-linux-graphics-installer_1.2.1-0intel2_amd64.deb filename: /lib/modules/3.13.0-37-generic/kernel/drivers/gpu/drm/i915/i915.ko license:GPL and additional rights description:Intel Graphics author: Tungsten Graphics, Inc. license:GPL and additional rights srcversion: 594AF6054E9069A37423B0F vermagic: 3.13.0-37-generic SMP mod_unload modversions signer: Magrathea: Glacier signing key sig_key:2C:B1:13:3B:35:F9:5A:9E:24:DE:AB:EE:B1:2B:A4:49:BC:BA:BB:C9 Almost of time the screen turns grey colors and stops flickering. Then, I have to try change screen resolution many times until colors are back, and the flickering. I have tried several screen resolutions and frequencies, including the configuration that works fine with graphic Gallium 0.4 on llvmpipe (LLVM 3.6, 256 bits), that I got when I boot in recovery mode, choose failsafeX and I stop the process with CTRL+C just after the X error. -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xserver-xorg-video-intel in Ubuntu. https://bugs.launchpad.net/bugs/1522922 Title: Screen flickering in Intel i915 driver To manage notifications about this bug go to: https://bugs.launchpad.net/nouveau/+bug/1522922/+subscriptions ___ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp
[Ubuntu-x-swat] [Bug 1522922] Re: Screen flickering in Intel i915 driver
This bugs affects my m3800 on Ubuntu 15.10 with Unity desktop. Flickering seen with linux kernel 4.2, 4.3 and 4.4. No flickering only when I run kernel 3.19 -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xserver-xorg-video-intel in Ubuntu. https://bugs.launchpad.net/bugs/1522922 Title: Screen flickering in Intel i915 driver To manage notifications about this bug go to: https://bugs.launchpad.net/nouveau/+bug/1522922/+subscriptions ___ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp
[Ubuntu-x-swat] [Bug 1522922] Re: Screen flickering in Intel i915 driver
In http://www.lorenzobettini.it/2015/12/flickering-for-intel-graphic- card-in-linux-4-2/ I described the steps to revert the two commits that seem to have introduced the flickering. This requires downloading the kernel sources, revert the two commits, compile the kernel and install the locally built packages. This bug is particularly annoying, and each time a new upgrade on the kernel is released the above procedure has to be performed again. Not to mention that this bug makes the system unusable (if the above procedure is not performed). I think that the "importance" should be brought back to "Critical" (assuming that "Critical" is higher than "High"). -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xserver-xorg-video-intel in Ubuntu. https://bugs.launchpad.net/bugs/1522922 Title: Screen flickering in Intel i915 driver To manage notifications about this bug go to: https://bugs.launchpad.net/nouveau/+bug/1522922/+subscriptions ___ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp
[Ubuntu-x-swat] [Bug 1522922] Re: Screen flickering in Intel i915 driver
** Package changed: libdrm (Ubuntu) => xserver-xorg-video-intel (Ubuntu) ** Changed in: xserver-xorg-video-intel (Ubuntu) Importance: Critical => High -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xserver-xorg-video-intel in Ubuntu. https://bugs.launchpad.net/bugs/1522922 Title: Screen flickering in Intel i915 driver To manage notifications about this bug go to: https://bugs.launchpad.net/nouveau/+bug/1522922/+subscriptions ___ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp
[Ubuntu-x-swat] [Bug 1522922] Re: Screen flickering in Intel i915 driver
Finally got the dump just as the monitor started to flicker. ** Attachment added: "crash-kdump.tar.gz" https://bugs.launchpad.net/ubuntu/+source/libdrm/+bug/1522922/+attachment/4553076/+files/crash-kdump.tar.gz -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to libdrm in Ubuntu. https://bugs.launchpad.net/bugs/1522922 Title: Screen flickering in Intel i915 driver To manage notifications about this bug go to: https://bugs.launchpad.net/nouveau/+bug/1522922/+subscriptions ___ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp
[Ubuntu-x-swat] [Bug 1522922] Re: Screen flickering in Intel i915 driver
** Changed in: libdrm (Ubuntu) Status: Confirmed => Triaged -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to libdrm in Ubuntu. https://bugs.launchpad.net/bugs/1522922 Title: Screen flickering in Intel i915 driver To manage notifications about this bug go to: https://bugs.launchpad.net/nouveau/+bug/1522922/+subscriptions ___ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp
[Ubuntu-x-swat] [Bug 1522922]
Created attachment 120919 syslog for 3 patches with increased debug Hi Mika No problem. I applied the following patches to the latest drm-intel-nightly: https://patchwork.freedesktop.org/patch/69394/ https://patchwork.freedesktop.org/patch/69395/ https://patchwork.freedesktop.org/patch/69396/ https://bugs.freedesktop.org/attachment.cgi?id=120893 As expected, flickering is still present. syslog attached. The last patch that fixed the issue was this: https://patchwork.freedesktop.org/patch/66697/ Is there a reason we're not using it now? -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to libdrm in Ubuntu. https://bugs.launchpad.net/bugs/1522922 Title: Screen flickering in Intel i915 driver To manage notifications about this bug go to: https://bugs.launchpad.net/nouveau/+bug/1522922/+subscriptions ___ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp
[Ubuntu-x-swat] [Bug 1522922]
(In reply to Tom Furniss from comment #69) > Created attachment 120919 [details] > syslog for 3 patches with increased debug > > Hi Mika > > No problem. I applied the following patches to the latest drm-intel-nightly: > https://patchwork.freedesktop.org/patch/69394/ > https://patchwork.freedesktop.org/patch/69395/ > https://patchwork.freedesktop.org/patch/69396/ > https://bugs.freedesktop.org/attachment.cgi?id=120893 > Thank you Tom for providing a log. The issue still persists and you keep receiving a lot of short hotplug detection pulses. > As expected, flickering is still present. syslog attached. > > The last patch that fixed the issue was this: > https://patchwork.freedesktop.org/patch/66697/ > Is there a reason we're not using it now? During the patch review I received comments that I should move the idea of tracking the config changes to its current location in patch https://patchwork.freedesktop.org/patch/69394/ If you have time, it would be interesting to know if you apply this patch https://patchwork.freedesktop.org/patch/66697/ on top of current -nightly and check if it still fixes the flickering. -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to libdrm in Ubuntu. https://bugs.launchpad.net/bugs/1522922 Title: Screen flickering in Intel i915 driver To manage notifications about this bug go to: https://bugs.launchpad.net/nouveau/+bug/1522922/+subscriptions ___ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp
[Ubuntu-x-swat] [Bug 1522922]
Created attachment 120920 dmesg for 3 patches with increased debug -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to libdrm in Ubuntu. https://bugs.launchpad.net/bugs/1522922 Title: Screen flickering in Intel i915 driver To manage notifications about this bug go to: https://bugs.launchpad.net/nouveau/+bug/1522922/+subscriptions ___ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp
[Ubuntu-x-swat] [Bug 1522922]
Created attachment 120819 dmesg after three patches and returned flicker -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to libdrm in Ubuntu. https://bugs.launchpad.net/bugs/1522922 Title: Screen flickering in Intel i915 driver To manage notifications about this bug go to: https://bugs.launchpad.net/nouveau/+bug/1522922/+subscriptions ___ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp
[Ubuntu-x-swat] [Bug 1522922]
> think Mika is on the right track, having solved the initial problem > (persistent flickering) by modifying the eDP link training. The remaining > problem is that the flickering recurs when the display resumes from sleep. in my case flickering occur just after reboot (and this is not the same flickerin art like in the video). Then I need to run 'xset dpms force off' command in the terminal at least once or many times until flickering is gone. Afterwards I see no flickering any longer even if it resumes from sleep. I can add that on the same hardware chromiumos works flawlessly. -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to libdrm in Ubuntu. https://bugs.launchpad.net/bugs/1522922 Title: Screen flickering in Intel i915 driver To manage notifications about this bug go to: https://bugs.launchpad.net/nouveau/+bug/1522922/+subscriptions ___ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp
[Ubuntu-x-swat] [Bug 1522922]
Seeing the video again and based on recent issues I faced I believe this could be watermark related... So, could you please apply http://patchwork.freedesktop.org/patch/69417/ and boot with i915.enable_watermark=0 and let us know what happens? -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to libdrm in Ubuntu. https://bugs.launchpad.net/bugs/1522922 Title: Screen flickering in Intel i915 driver To manage notifications about this bug go to: https://bugs.launchpad.net/nouveau/+bug/1522922/+subscriptions ___ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp
[Ubuntu-x-swat] [Bug 1522922]
> https://patchwork.freedesktop.org/patch/69394/ > https://patchwork.freedesktop.org/patch/69395/ > https://patchwork.freedesktop.org/patch/69396/ > > flux242 seems to have a clock recovery issue. This fix may provide a > solution for that as well. three patches above (without the https://patchwork.freedesktop.org/patch/66697/) do not help -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to libdrm in Ubuntu. https://bugs.launchpad.net/bugs/1522922 Title: Screen flickering in Intel i915 driver To manage notifications about this bug go to: https://bugs.launchpad.net/nouveau/+bug/1522922/+subscriptions ___ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp
[Ubuntu-x-swat] [Bug 1522922]
Created attachment 120818 syslog after three patches and returned flicker Hi Mika. I seem to have regressed, and the flicker has returned. I took a new branch of intel-drm-nightly, and applied the three patches in the sequence you provided, but the flickering has returned and is consistent on every boot. Previously I had applied patches from this defect against a version of intel-drm-next from late November. The attached files are the syslog and dmesg. -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to libdrm in Ubuntu. https://bugs.launchpad.net/bugs/1522922 Title: Screen flickering in Intel i915 driver To manage notifications about this bug go to: https://bugs.launchpad.net/nouveau/+bug/1522922/+subscriptions ___ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp
[Ubuntu-x-swat] [Bug 1522922]
Created attachment 120893 DP debugging Tom, I would bother you again to provide some debugging info. From the dmesg you sent it seems that you are experiencing a lot of hpd interrupts. When that happens the driver checks if the DP channel equalization is still ok. On your case, channel equalization is not ok yielding DP link to be retrained. Of course, this causes flickering as the DP link is broken for some time. The patch I'm proposing for debugging purposes applies on top of the latest -nightly and on top of these previous patches https://patchwork.freedesktop.org/patch/69394/ https://patchwork.freedesktop.org/patch/69395/ https://patchwork.freedesktop.org/patch/69396/ The patch adds more verbose debug information on channel equalization and limits the DP link retraining to 5. After 5 attempts to retrain the link you probably end up having a non-flickering display or a black screen. Please, report back with dmesg. -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to libdrm in Ubuntu. https://bugs.launchpad.net/bugs/1522922 Title: Screen flickering in Intel i915 driver To manage notifications about this bug go to: https://bugs.launchpad.net/nouveau/+bug/1522922/+subscriptions ___ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp
[Ubuntu-x-swat] [Bug 1522922]
(In reply to Rodrigo Vivi from comment #65) > Seeing the video again and based on recent issues I faced I believe this > could be watermark related... > So, could you please apply http://patchwork.freedesktop.org/patch/69417/ > and boot with i915.enable_watermark=0 and let us know what happens? The watermark patch did not affect the symptoms of this problem, Rodrigo. I think Mika is on the right track, having solved the initial problem (persistent flickering) by modifying the eDP link training. The remaining problem is that the flickering recurs when the display resumes from sleep. -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to libdrm in Ubuntu. https://bugs.launchpad.net/bugs/1522922 Title: Screen flickering in Intel i915 driver To manage notifications about this bug go to: https://bugs.launchpad.net/nouveau/+bug/1522922/+subscriptions ___ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp
[Ubuntu-x-swat] [Bug 1522922]
Thank you Tom for the syslog. From the log the DP link training is completed but for some reason the DP channel equalization fails. At this point we request to do link training once again and now first we try first the drive current and pre-emphasis levels from the previous link training. Instead of reusing these values, we should restart the link training with zero drive current and pre-emphasis levels. This is fixed at the 3rd patch of this series. Please, try out this series of patches on top of the drm-intel-nighly and report back. https://patchwork.freedesktop.org/patch/69394/ https://patchwork.freedesktop.org/patch/69395/ https://patchwork.freedesktop.org/patch/69396/ flux242 seems to have a clock recovery issue. This fix may provide a solution for that as well. -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to libdrm in Ubuntu. https://bugs.launchpad.net/bugs/1522922 Title: Screen flickering in Intel i915 driver To manage notifications about this bug go to: https://bugs.launchpad.net/nouveau/+bug/1522922/+subscriptions ___ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp
[Ubuntu-x-swat] [Bug 1522922]
patch https://patchwork.freedesktop.org/patch/66697/ DOESN'T solve the
flickering problem on my computer.
What I did:
1. installed generic kernel and headers from
http://kernel.ubuntu.com/~kernel-ppa/mainline/drm-intel-nightly/2015-12-24-wily/
2. get the sources from the git://anongit.freedesktop.org/drm-intel branch
drm-intel-nightly (commit number: ec0382c73cb1adc972bebdd94afad3f0ea117114)
3. applied the patch https://patchwork.freedesktop.org/patch/66697/
4. compiled the i915 driver and installed it:
mykern=${1:-$(uname -r)}
cp /usr/src/linux-headers-$mykern/Module.symvers .
# Prep tree
cp /boot/config-$mykern ./.config
make oldconfig
make prepare
make modules_prepare
# Build only the needed directories
make SUBDIRS=drivers/gpu/drm/i915 modules
[ -s /lib/modules/$mykern/kernel/drivers/gpu/drm/i915/i915.ko.orig ] || sudo cp
/lib/modules/$mykern/kernel/drivers/gpu/drm/i915/i915.ko{,.orig}
sudo cp drivers/gpu/drm/i915/i915.ko
/lib/modules/$mykern/kernel/drivers/gpu/drm/i915/
5. reboot
But. Now with the kernel 4.4.xx if I run 'xset dpms force off' just
after the boot then the flicker is gone.
grep of the last boot syslog:
$ grep drm /tmp/syslog
Dec 24 11:29:49 chrome kernel: [2.028119] [drm] Initialized drm 1.1.0
20060810
Dec 24 11:29:49 chrome kernel: [2.066980] [drm] Memory usable by graphics
device = 4096M
Dec 24 11:29:49 chrome kernel: [2.066985] [drm] Replacing VGA console driver
Dec 24 11:29:49 chrome kernel: [2.067495] [drm] Supports vblank timestamp
caching Rev 2 (21.10.2013).
Dec 24 11:29:49 chrome kernel: [2.067498] [drm] Driver supports precise
vblank timestamp query.
Dec 24 11:29:49 chrome kernel: [2.067501] [drm] failed to find VBIOS tables
Dec 24 11:29:49 chrome kernel: [2.210886] [drm] Initialized i915 1.6.0
20151218 for :00:02.0 on minor 0
Dec 24 11:29:49 chrome kernel: [2.211478] fbcon: inteldrmfb (fb0) is
primary device
Dec 24 11:29:49 chrome kernel: [3.021978]
[drm:intel_dp_link_training_clock_recovery [i915]] *ERROR* failed to enable
link training
Dec 24 11:29:49 chrome kernel: [3.025516] [drm:intel_dp_start_link_train
[i915]] *ERROR* failed to start channel equalization
Dec 24 11:29:49 chrome kernel: [3.206466] i915 :00:02.0: fb0:
inteldrmfb frame buffer device
Dec 24 11:30:13 chrome kernel: [ 29.162270]
[drm:intel_dp_link_training_clock_recovery [i915]] *ERROR* failed to enable
link training
--
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https://bugs.launchpad.net/bugs/1522922
Title:
Screen flickering in Intel i915 driver
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[Ubuntu-x-swat] [Bug 1522922]
Created attachment 120678 syslog for sleep/resume flickering issue Mika - this is the syslog for the flickering on resume from sleep, after applying your latest patch (https://bugs.freedesktop.org/attachment.cgi?id=120493) I do fairly consistently see a single flicker after requesting sleep, and before the laptop sleeps. This may or may not be the flickering issue, so I can't be certain whether the problem starts on requesting sleep mode, or on resuming from sleep. -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to libdrm in Ubuntu. https://bugs.launchpad.net/bugs/1522922 Title: Screen flickering in Intel i915 driver To manage notifications about this bug go to: https://bugs.launchpad.net/nouveau/+bug/1522922/+subscriptions ___ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp
[Ubuntu-x-swat] [Bug 1522922]
(In reply to Mika Kahola from comment #54) > These patches apply to drm-intel-nightly kernel which is a development tree > for i915 driver. You can clone the git repository from > > https://01.org/linuxgraphics/documentation/development/source-code > > and apply these patches on top of it. I'm afraid, this is the only option at > the moment to get these issues fixed. Eventually, these patches will be > upstreamed as fixes. well, eventually means it could take halve a year until we got those patches which makes our computers useless. I can also add that on my computer I cannot enable vesa mode and i915.modeset=0 option makes the screen black, i.e. bricks it. Reverting two patches for the ubuntu's 4.2.0.19 kernel like it was described above doesn't help either. I tried to figure out how to apply your patch onto 4.2.0.19 but it seems like training staff was moved out of the intel_dp.c and some files are missing completely, so no luck. Cloning the 1Gigabyte git repo like you suggest would also mean that I'd need to compile drm driver code with the kernel version that in that repo too right? Or I can copy the gpu/drm/i915 over to my kernel version and it'll work? -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to libdrm in Ubuntu. https://bugs.launchpad.net/bugs/1522922 Title: Screen flickering in Intel i915 driver To manage notifications about this bug go to: https://bugs.launchpad.net/nouveau/+bug/1522922/+subscriptions ___ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp
[Ubuntu-x-swat] [Bug 1522922]
Created attachment 120493 Disable fast link training when resuming Tom - thank you for you feedback and logs. I think I need to disable the fast link training feature when resuming from the suspend state. This patch does just that in case of DP or eDP connectors. Please, test this patch if this would provide a solution for this resuming issue. -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to libdrm in Ubuntu. https://bugs.launchpad.net/bugs/1522922 Title: Screen flickering in Intel i915 driver To manage notifications about this bug go to: https://bugs.launchpad.net/nouveau/+bug/1522922/+subscriptions ___ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp
[Ubuntu-x-swat] [Bug 1522922]
(In reply to Mika Kahola from comment #55) > Created attachment 120493 [details] [review] > Disable fast link training when resuming > > Tom - thank you for you feedback and logs. I think I need to disable the > fast link training feature when resuming from the suspend state. This patch > does just that in case of DP or eDP connectors. Please, test this patch if > this would provide a solution for this resuming issue. Hi Mika Just a quick update as I'm away from my test laptop until the end of the week. The patch did not resolve the issue, though interestingly the flickering appears from the time the suspend sequence starts rather than on resume (the screen starts flickering before it turns off). I'll test more thoroughly and post logs at the weekend. -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to libdrm in Ubuntu. https://bugs.launchpad.net/bugs/1522922 Title: Screen flickering in Intel i915 driver To manage notifications about this bug go to: https://bugs.launchpad.net/nouveau/+bug/1522922/+subscriptions ___ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp
[Ubuntu-x-swat] [Bug 1522922]
> Cloning the 1Gigabyte git repo like you suggest would also mean that I'd > need to compile drm driver code with the kernel version that in that repo > too right? Or I can copy the gpu/drm/i915 over to my kernel version and > it'll work? Yes, you must rebuild kernel with updated drm driver and applied patches. -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to libdrm in Ubuntu. https://bugs.launchpad.net/bugs/1522922 Title: Screen flickering in Intel i915 driver To manage notifications about this bug go to: https://bugs.launchpad.net/nouveau/+bug/1522922/+subscriptions ___ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp
[Ubuntu-x-swat] [Bug 1522922]
(In reply to Andrew Merzlyakov from comment #52) > I've experienced exactly the same problem, as Tom Furniss described. > Kernel version: 4.2.6-301.fc23.x86_64 > dmesg with drm.debug=14 attached. > I'm failed to apply patches, files structure in drivers/gpu/drm/i915/ is > slightly different. > If there is any other options for me to fix issue? These patches apply to drm-intel-nightly kernel which is a development tree for i915 driver. You can clone the git repository from https://01.org/linuxgraphics/documentation/development/source-code and apply these patches on top of it. I'm afraid, this is the only option at the moment to get these issues fixed. Eventually, these patches will be upstreamed as fixes. -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to libdrm in Ubuntu. https://bugs.launchpad.net/bugs/1522922 Title: Screen flickering in Intel i915 driver To manage notifications about this bug go to: https://bugs.launchpad.net/nouveau/+bug/1522922/+subscriptions ___ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp
[Ubuntu-x-swat] [Bug 1522922]
Created attachment 120481 dmesg for resume from sleep flickering -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to libdrm in Ubuntu. https://bugs.launchpad.net/bugs/1522922 Title: Screen flickering in Intel i915 driver To manage notifications about this bug go to: https://bugs.launchpad.net/nouveau/+bug/1522922/+subscriptions ___ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp
[Ubuntu-x-swat] [Bug 1522922]
Created attachment 120485 dmesg with drm.debug=14 -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to libdrm in Ubuntu. https://bugs.launchpad.net/bugs/1522922 Title: Screen flickering in Intel i915 driver To manage notifications about this bug go to: https://bugs.launchpad.net/nouveau/+bug/1522922/+subscriptions ___ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp
[Ubuntu-x-swat] [Bug 1522922] Re: Screen flickering in Intel i915 driver
Launchpad has imported 49 comments from the remote bug at https://bugs.freedesktop.org/show_bug.cgi?id=91393. If you reply to an imported comment from within Launchpad, your comment will be sent to the remote bug automatically. Read more about Launchpad's inter-bugtracker facilities at https://help.launchpad.net/InterBugTracking. On 2015-07-19T11:17:16+00:00 Furniss-tom wrote: Created attachment 117243 dmesg Consistently flickering screen when i915 driver is used with the N133HSE-EA3 screen of the Lafite 13.3 laptop. Video here: https://www.youtube.com/watch?v=0ISthkP7L3o When i915 driver is disabled (i915.modeset=0), Linux falls back to the vesa driver and the laptop screen renders correctly. When an external monitor is connected via HDMI, the i915 driver renders the external monitor correctly whilst the flickering remains on the laptop screen. Earlier versions of this laptop model did not experience this problem, but the most recent version does (reported by one other user). I have no authoritative record of the hardware changes between model versions. System information: - Architecture and kernel: 4.2.0-994-generic #201507142205 SMP Wed Jul 15 02:06:50 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux - Distribution: Ubuntu 15.04 - Laptop model: Lafite 13.3 from www.pcspecialist.co.uk - Laptop Screen: Chimei N133HSE-EA3 - Display Conenctor: eDP $ sudo get-edid | edid-decode Extracted contents: header: 00 ff ff ff ff ff ff 00 serial number: 0d ae 61 13 00 00 00 00 07 18 version: 01 04 basic params:a5 1d 11 78 02 chroma info: ce 85 a3 57 4e 9d 26 12 50 54 established: 00 00 00 standard:01 01 01 01 01 01 01 01 01 01 01 01 01 01 01 01 descriptor 1:36 36 80 a0 70 38 20 40 2e 1e 24 00 25 a5 10 00 00 18 descriptor 2:24 24 80 a0 70 38 20 40 2e 1e 24 00 25 a5 10 00 00 18 descriptor 3:00 00 00 fe 00 43 4d 4e 0a 20 20 20 20 20 20 20 20 20 descriptor 4:00 00 00 fe 00 4e 31 33 33 48 53 45 2d 45 41 33 0a 20 extensions: 00 checksum:a1 Manufacturer: CMN Model 1361 Serial Number 0 Made week 7 of 2014 EDID version: 1.4 Digital display 8 bits per primary color channel DisplayPort interface Maximum image size: 29 cm x 17 cm Gamma: 2.20 Supported color formats: RGB 4:4:4 First detailed timing is preferred timing Established timings supported: Standard timings supported: Detailed mode: Clock 138.780 MHz, 293 mm x 165 mm 1920 1966 1996 2080 hborder 0 1080 1082 1086 1112 vborder 0 -hsync -vsync Detailed mode: Clock 92.520 MHz, 293 mm x 165 mm 1920 1966 1996 2080 hborder 0 1080 1082 1086 1112 vborder 0 -hsync -vsync ASCII string: CMN ASCII string: N133HSE-EA3 Checksum: 0xa1 EDID block does NOT conform to EDID 1.3! Missing name descriptor Missing monitor ranges $ sudo lshw -c video *-display description: VGA compatible controller product: Broadwell-U Integrated Graphics vendor: Intel Corporation physical id: 2 bus info: pci@:00:02.0 version: 09 width: 64 bits clock: 33MHz capabilities: msi pm vga_controller bus_master cap_list rom configuration: driver=i915 latency=0 resources: irq:50 memory:b100-b1ff memory:c000-cfff ioport:4000(size=64) $ glxinfo | grep -i vendor server glx vendor string: SGI client glx vendor string: Mesa Project and SGI OpenGL vendor string: Intel Open Source Technology Center $ glxinfo | grep -i render direct rendering: Yes GLX_MESA_multithread_makecurrent, GLX_MESA_query_renderer, GLX_MESA_multithread_makecurrent, GLX_MESA_query_renderer, OpenGL renderer string: Mesa DRI Intel(R) HD Graphics 5500 (Broadwell GT2) GL_ARB_conditional_render_inverted, GL_ARB_conservative_depth, GL_MESA_texture_signed_rgba, GL_NV_conditional_render, GL_NV_depth_clamp, GL_ARB_conditional_render_inverted, GL_ARB_conservative_depth, GL_NV_conditional_render, GL_NV_depth_clamp, GL_NV_light_max_exponent, GL_OES_element_index_uint, GL_OES_fbo_render_mipmap, Reply at: https://bugs.launchpad.net/ubuntu/+source/libdrm/+bug/1522922/comments/0 On 2015-07-19T11:18:11+00:00 Furniss-tom wrote: Created attachment 117244 intel-reg-dumper Reply at: https://bugs.launchpad.net/ubuntu/+source/libdrm/+bug/1522922/comments/1 On 2015-07-19T11:18:44+00:00 Furniss-tom wrote: Created attachment 117245 edid file Reply at: https://bugs.launchpad.net/ubuntu/+source/libdrm/+bug/1522922/comments/2 On 2015-07-19T11:19:26+00:00 Furniss-tom wrote: Created attachment 117246 xrandr --verbose Reply at:
[Ubuntu-x-swat] [Bug 1522922] Re: Screen flickering in Intel i915 driver
** Also affects: libdrm (Ubuntu) Importance: Undecided Status: New ** Bug watch added: freedesktop.org Bugzilla #91393 https://bugs.freedesktop.org/show_bug.cgi?id=91393 ** Also affects: nouveau via https://bugs.freedesktop.org/show_bug.cgi?id=91393 Importance: Unknown Status: Unknown ** No longer affects: linux (Ubuntu) ** Changed in: libdrm (Ubuntu) Importance: Undecided => Critical ** Changed in: libdrm (Ubuntu) Status: New => Confirmed -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to libdrm in Ubuntu. https://bugs.launchpad.net/bugs/1522922 Title: Screen flickering in Intel i915 driver To manage notifications about this bug go to: https://bugs.launchpad.net/nouveau/+bug/1522922/+subscriptions ___ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp
