[Ubuntu-x-swat] [Bug 954661] Re: backlight brightness not adjustable by default on Dell XPS 13
** No longer affects: xserver-xorg-video-intel (Ubuntu) ** No longer affects: xserver-xorg-video-intel (Ubuntu Precise) ** No longer affects: xserver-xorg-video-intel (Ubuntu Quantal) ** Changed in: linux (Ubuntu Precise) Status: Confirmed => In Progress -- 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/954661 Title: backlight brightness not adjustable by default on Dell XPS 13 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/954661/+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 954661] Re: backlight brightness not adjustable by default on Dell XPS 13
** Branch linked: lp:ubuntu/quantal-proposed/linux-ti-omap4 -- 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/954661 Title: backlight brightness not adjustable by default on Dell XPS 13 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/954661/+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 954661] Re: backlight brightness not adjustable by default on Dell XPS 13
This bug was fixed in the package linux - 3.5.0-15.21 --- linux (3.5.0-15.21) quantal; urgency=low [ Tim Gardner ] * ubuntu: AUFS -- update to 18e455787597579fe144cdb2f18aa6a0a32c46a4 * [Config] Enable aufs - LP: #908784 [ Upstream Kernel Changes ] * eCryptfs: check for eCryptfs cipher support at mount - LP: #338914 * drm/i915: pnv has a backlight polarity control bit, too - LP: #954661 * drm/i915: clear up backlight #define confusion on gen4+ - LP: #954661 * drm/i915: properly enable the blc controller on the right pipe - LP: #954661 * drm/i915: allow pipe A for lvds on gen4 - LP: #954661 -- Tim GardnerTue, 18 Sep 2012 08:37:51 -0400 ** Changed in: linux (Ubuntu Quantal) Status: Fix Committed => Fix 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/954661 Title: backlight brightness not adjustable by default on Dell XPS 13 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/954661/+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 954661] Re: backlight brightness not adjustable by default on Dell XPS 13
** Changed in: linux (Ubuntu Quantal) Status: In Progress => Fix Committed -- 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/954661 Title: backlight brightness not adjustable by default on Dell XPS 13 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/954661/+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 954661] Re: backlight brightness not adjustable by default on Dell XPS 13
Installed the new kernel and it still fixes it on my Panasonic CF-18. Nice one. -- 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/954661 Title: backlight brightness not adjustable by default on Dell XPS 13 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/954661/+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 954661] Re: backlight brightness not adjustable by default on Dell XPS 13
Upstream developer Daniel Vetter has developed a more sophisticated backlight patch set which fixes this problem for the Dell XPS 13z. I have updated my DellXPS kernel PPA to include this new patch set since it will likely appear in the mainline kernel soon (the new "kamal1" version of the PPA kernel is queued to build, and will become available within the next day or so): https://launchpad.net/~kamalmostafa/+archive/dellxps Note that the new PPA kernel NO LONGER includes the i915.enable_backlight kernel boot parameter -- it is no longer necessary for the Dell XPS 13z. Hopefully it is likewise no longer necessary for other systems which saw improvement with the old kernel... @Thomas Lärm (rundablage) - Please advise whether the new "kamal1" version PPA kernel still fixes your brightness control on your Panasonic CF-18! Anyone else with a brightness control problem machine other than Dell XPS 13z - Please advise if the new "kamal1" version PPA kernel makes brightness control better, or worse (reports of "no change" are not needed). -- 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/954661 Title: backlight brightness not adjustable by default on Dell XPS 13 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/954661/+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 954661] Re: backlight brightness not adjustable by default on Dell XPS 13
The ppa-kernel actually helped me on a Panasonic CF-18 which had the same problem under Precise. There were two interfaces under /sys/class/brightness: intel_backlight and panasonic. I think the XF86BrightnessUp only tried to adjust the intel_backlight, which did nothing. Writing directly to panasonic worked, so I assume it's the same problem. Anyway, running the DellXPS-Kernel -> working backlight hotkeys. Thanks Kamal! -- 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/954661 Title: backlight brightness not adjustable by default on Dell XPS 13 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/954661/+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 954661] Re: backlight brightness not adjustable by default on Dell XPS 13
** Also affects: linux (Ubuntu Precise) Importance: Undecided Status: New ** Also affects: xserver-xorg-video-intel (Ubuntu Precise) Importance: Undecided Status: New ** Also affects: linux (Ubuntu Quantal) Importance: Medium Assignee: Kamal Mostafa (kamalmostafa) Status: In Progress ** Also affects: xserver-xorg-video-intel (Ubuntu Quantal) Importance: Undecided Status: Invalid ** Changed in: linux (Ubuntu Precise) Status: New => Confirmed ** Changed in: linux (Ubuntu Precise) Importance: Undecided => Medium ** Changed in: xserver-xorg-video-intel (Ubuntu Precise) Status: New => Invalid -- 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/954661 Title: backlight brightness not adjustable by default on Dell XPS 13 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/954661/+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 954661] Re: backlight brightness not adjustable by default on Dell XPS 13
** Patch added: "0002-drm-i915-quirk-disable-i915-backlight-on-Dell-XPS-13.patch" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/954661/+attachment/3103723/+files/0002-drm-i915-quirk-disable-i915-backlight-on-Dell-XPS-13.patch ** Patch removed: "0001-i915-i915.enable_backlight-0-disables-intel_backligh.patch" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/954661/+attachment/3079343/+files/0001-i915-i915.enable_backlight-0-disables-intel_backligh.patch ** Patch removed: "0002-i915-quirk-disable-i915-backlight-on-Dell-XPS13.patch" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/954661/+attachment/3079362/+files/0002-i915-quirk-disable-i915-backlight-on-Dell-XPS13.patch -- 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/954661 Title: backlight brightness not adjustable by default on Dell XPS 13 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/954661/+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 954661] Re: backlight brightness not adjustable by default on Dell XPS 13
Patches submitted to intel-gfx. ** Patch added: "0001-drm-i915-i915.enable_backlight-0-disables-intel_back.patch" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/954661/+attachment/3103721/+files/0001-drm-i915-i915.enable_backlight-0-disables-intel_back.patch -- 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/954661 Title: backlight brightness not adjustable by default on Dell XPS 13 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/954661/+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 954661] Re: backlight brightness not adjustable by default on Dell XPS 13
The "i915-enable-backlight" kernel PPA has been moved to: https://launchpad.net/~kamalmostafa/+archive/dellxps and includes additional fixes relevant to Dell XPS 13z and XPS 15z. -- 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/954661 Title: backlight brightness not adjustable by default on Dell XPS 13 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/954661/+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 954661] Re: backlight brightness not adjustable by default on Dell XPS 13
Kamal, I can confirm this works for me too, 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/954661 Title: backlight brightness not adjustable by default on Dell XPS 13 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/954661/+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 954661] Re: backlight brightness not adjustable by default on Dell XPS 13
** Patch added: "0002-i915-quirk-disable-i915-backlight-on-Dell-XPS13.patch" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/954661/+attachment/3079362/+files/0002-i915-quirk-disable-i915-backlight-on-Dell-XPS13.patch -- 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/954661 Title: backlight brightness not adjustable by default on Dell XPS 13 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/954661/+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 954661] Re: backlight brightness not adjustable by default on Dell XPS 13
** Patch added: "0001-i915-i915.enable_backlight-0-disables-intel_backligh.patch" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/954661/+attachment/3079343/+files/0001-i915-i915.enable_backlight-0-disables-intel_backligh.patch -- 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/954661 Title: backlight brightness not adjustable by default on Dell XPS 13 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/954661/+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 954661] Re: backlight brightness not adjustable by default on Dell XPS 13
Robert Hooker has provided an additional patch which automatically switches off the i915.enable_backlight parameter (see comment #18) for the Dell XPS13. The PPA kernel now includes both patches (as of the ~kamal1 version): https://launchpad.net/~kamalmostafa/+archive/i915-enable-backlight With the PPA kernel installed, backlight control should work properly on the Dell XPS13 without needing any special boot parameters. ** Patch removed: "i915-enable-backlight.patch" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/954661/+attachment/3073275/+files/i915-enable-backlight.patch -- 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/954661 Title: backlight brightness not adjustable by default on Dell XPS 13 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/954661/+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 954661] Re: backlight brightness not adjustable by default on Dell XPS 13
The attachment "i915-enable-backlight.patch" of this bug report has been identified as being a patch. The ubuntu-reviewers team has been subscribed to the bug report so that they can review the patch. In the event that this is in fact not a patch you can resolve this situation by removing the tag 'patch' from the bug report and editing the attachment so that it is not flagged as a patch. Additionally, if you are member of the ubuntu-reviewers team please also unsubscribe the team from this bug report. [This is an automated message performed by a Launchpad user owned by Brian Murray. Please contact him regarding any issues with the action taken in this bug report.] ** Tags added: patch -- 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/954661 Title: backlight brightness not adjustable by default on Dell XPS 13 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/954661/+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 954661] Re: backlight brightness not adjustable by default on Dell XPS 13
I've written a patch which provides a new kernel boot param "i915.enable_backlight=0". i915.enable_backlight=0 can be used to disable i915 backlight control and the /sys/class/backlight/intel_backlight interface -- useful for systems where intel_backight conflicts with BIOS backlight control. An Ubuntu Precise PPA kernel with the patch applied is here: https://launchpad.net/~kamalmostafa/+archive/i915-enable-backlight Mario/others, please apply the PPA kernel, then boot with "i915.enable_backlight=0". This should resolve the problem (it does on my XPS13). Please confirm. ** Patch added: "i915-enable-backlight.patch" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/954661/+attachment/3073275/+files/i915-enable-backlight.patch -- 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/954661 Title: backlight brightness not adjustable by default on Dell XPS 13 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/954661/+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 954661] Re: backlight brightness not adjustable by default on Dell XPS 13
I have a Dell XPS13 in hand now and can easily reproduce the problem; I am working on an improved work-around. ** Changed in: linux (Ubuntu) Status: Triaged => In Progress ** Changed in: linux (Ubuntu) Assignee: (unassigned) => Kamal Mostafa (kamalmostafa) -- 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/954661 Title: backlight brightness not adjustable by default on Dell XPS 13 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/954661/+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
Re: [Ubuntu-x-swat] [Bug 954661] Re: backlight brightness not adjustable by default on Dell XPS 13
Robert, Yes, that is correct. Matter of fact for now on this machine I've created an upstart job and pm resume script to do just that on boot so that brightness control is functional until intel_backlight can be sorted out properly. On Tue, Apr 10, 2012 at 17:40, Robert Hooker wrote: > http://permalink.gmane.org/gmane.linux.gentoo.user/255182 seems to imply > an echo 0 > /sys/class/backlight/intel_backlight/brightness fixes the > acpi_video0 interface > > -- > You received this bug notification because you are subscribed to the bug > report. > https://bugs.launchpad.net/bugs/954661 > > Title: > backlight brightness not adjustable by default on Dell XPS 13 > > To manage notifications about this bug go to: > https://bugs.launchpad.net/ubuntu/+source/linux/+bug/954661/+subscriptions > -- Mario Limonciello supe...@gmail.com -- 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/954661 Title: backlight brightness not adjustable by default on Dell XPS 13 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/954661/+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 954661] Re: backlight brightness not adjustable by default on Dell XPS 13
http://permalink.gmane.org/gmane.linux.gentoo.user/255182 seems to imply an echo 0 > /sys/class/backlight/intel_backlight/brightness fixes the acpi_video0 interface -- 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/954661 Title: backlight brightness not adjustable by default on Dell XPS 13 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/954661/+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 954661] Re: backlight brightness not adjustable by default on Dell XPS 13
Kamal: With those boot options I only have intel_backlight in /sys/class/backlight. The brightness keys do move up and down the values, but the screen brightness pulsates rather than flickers. ** Attachment added: "upside down video showing pulsating" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/954661/+attachment/3043240/+files/VID_20120410_172203.mp4 -- 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/954661 Title: backlight brightness not adjustable by default on Dell XPS 13 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/954661/+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 954661] Re: backlight brightness not adjustable by default on Dell XPS 13
Mario, how about trying with "acpi_backlight=vendor" and also "dell_laptop.backlight=0" (goal still being to leave only intel_backlight). Please report what you end up with in /sys/class/backlight in that case, and then whether you still see the flicker when you adjust the intel_backlight/brightness value. -- 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/954661 Title: backlight brightness not adjustable by default on Dell XPS 13 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/954661/+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
Re: [Ubuntu-x-swat] [Bug 954661] Re: backlight brightness not adjustable by default on Dell XPS 13
Kamal, I booted with acpi_backlight=vendor, and that makes things worse out of the box. At max brightness (what it boots by default) no discernable difference. Then when the screen goes into idle after a few minutes not on AC it starts flickering at me violently. The same thing happens if I manually hit the brightness down keys. The lower the brightness the more aggressive the flicker until I go to zero brightness when the flicker goes away. Also, it's worth noting, booting with that option created a dell_backlight in /sys/class/backlight as well as that intel_backlight. This is the same type of flicker that happens if I manually set any value (that I tried) in /sys/class/backlight/intel_backlight/brightness other than 0 or 4882. On Tue, Apr 10, 2012 at 16:33, Kamal Mostafa wrote: > Mario, from your comment #5, it sounds to me like the problem may be due > to there being two /sys/class/backlight interfaces present (acpi_video0 > and intel_backlight). Mario & Daniel, you might try booting with the > kernel boot parameter "acpi_backlight=vendor" which should disable > acpi_video0 leaving only intel_backlight. Does that improve any of the > behaviors you're seeing (or make them worse)? > > -- > You received this bug notification because you are subscribed to the bug > report. > https://bugs.launchpad.net/bugs/954661 > > Title: > backlight brightness not adjustable by default on Dell XPS 13 > > To manage notifications about this bug go to: > https://bugs.launchpad.net/ubuntu/+source/linux/+bug/954661/+subscriptions > -- Mario Limonciello supe...@gmail.com -- 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/954661 Title: backlight brightness not adjustable by default on Dell XPS 13 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/954661/+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 954661] Re: backlight brightness not adjustable by default on Dell XPS 13
Mario, from your comment #5, it sounds to me like the problem may be due to there being two /sys/class/backlight interfaces present (acpi_video0 and intel_backlight). Mario & Daniel, you might try booting with the kernel boot parameter "acpi_backlight=vendor" which should disable acpi_video0 leaving only intel_backlight. Does that improve any of the behaviors you're seeing (or make them worse)? -- 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/954661 Title: backlight brightness not adjustable by default on Dell XPS 13 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/954661/+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 954661] Re: backlight brightness not adjustable by default on Dell XPS 13
This issue appears to be an upstream bug, since you tested the latest upstream kernel. Would it be possible for you to open an upstream bug report at bugzilla.kernel.org [1]? That will allow the upstream Developers to examine the issue, and may provide a quicker resolution to the bug. If you are comfortable with opening a bug upstream, It would be great if you can report back the upstream bug number in this bug report. That will allow us to link this bug to the upstream report. [1] https://wiki.ubuntu.com/Bugs/Upstream/kernel ** Changed in: linux (Ubuntu) Status: Confirmed => Triaged -- 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/954661 Title: backlight brightness not adjustable by default on Dell XPS 13 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/954661/+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 954661] Re: backlight brightness not adjustable by default on Dell XPS 13
Yes, the problem persists with the upstream kernel listed there: (Linux test-Dell-System-XPS-L321X 3.4.0-030400rc1-generic #201203312035 SMP Sun Apr 1 00:36:22 UTC 2012 x86_64 x86_64 x86_64 GNU/Linux) ** Tags removed: needs-upstream-testing ** Tags added: kernel-bug-exists-upstream ** Changed in: linux (Ubuntu) Status: Incomplete => Confirmed -- 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/954661 Title: backlight brightness not adjustable by default on Dell XPS 13 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/954661/+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 954661] Re: backlight brightness not adjustable by default on Dell XPS 13
Would it be possible for you to test the latest upstream kernel? Refer to https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the latest v3.4kernel[1] (Not a kernel in the daily directory). Once you've tested the upstream kernel, please remove the 'needs-upstream-testing' tag(Only that one tag, please leave the other tags). This can be done by clicking on the yellow pencil icon next to the tag located at the bottom of the bug description and deleting the 'needs-upstream-testing' text. If this bug is fixed in the mainline kernel, please add the following tag 'kernel-fixed-upstream'. If the mainline kernel does not fix this bug, please add the tag: 'kernel-bug-exists-upstream'. If you are unable to test the mainline kernel, for example it will not boot, please add the tag: 'kernel-unable-to-test-upstream'. Once testing of the upstream kernel is complete, please mark this bug as "Confirmed". Thanks in advance. http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.4-rc1-precise/ ** Changed in: linux (Ubuntu) Importance: Undecided => Medium ** Tags added: needs-upstream-testing ** Changed in: linux (Ubuntu) Status: Confirmed => Incomplete -- 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/954661 Title: backlight brightness not adjustable by default on Dell XPS 13 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/954661/+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 954661] Re: backlight brightness not adjustable by default on Dell XPS 13
Actually I have tested it with 3.2.0.22-generic #35. Persists with that kernel too. ** Changed in: linux (Ubuntu) Status: Incomplete => Confirmed ** Tags added: bot-stop-nagging -- 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/954661 Title: backlight brightness not adjustable by default on Dell XPS 13 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/954661/+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 954661] Re: backlight brightness not adjustable by default on Dell XPS 13
Thank you for taking the time to file a bug report on this issue. However, given the number of bugs that the Kernel Team receives during any development cycle it is impossible for us to review them all. Therefore, we occasionally resort to using automated bots to request further testing. This is such a request. We have noted that there is a newer version of the development kernel than the one you last tested when this issue was found. Please test again with the newer kernel and indicate in the bug if this issue still exists or not. You can update to the latest development kernel by simply running the following commands in a terminal window: sudo apt-get update sudo apt-get dist-upgrade If the bug still exists, change the bug status from Incomplete to Confirmed. If the bug no longer exists, change the bug status from Incomplete to Fix Released. If you want this bot to quit automatically requesting kernel tests, add a tag named: bot-stop-nagging. Thank you for your help, we really do appreciate it. ** Changed in: linux (Ubuntu) Status: Confirmed => Incomplete ** Tags added: kernel-request-3.2.0-22.35 -- 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/954661 Title: backlight brightness not adjustable by default on Dell XPS 13 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/954661/+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 954661] Re: backlight brightness not adjustable by default on Dell XPS 13
** Also affects: xserver-xorg-video-intel (Ubuntu) Importance: Undecided Status: New ** Changed in: xserver-xorg-video-intel (Ubuntu) Status: New => Invalid -- 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/954661 Title: backlight brightness not adjustable by default on Dell XPS 13 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/954661/+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 954661] Re: backlight brightness not adjustable by default on Dell XPS 13
Xorg has not managed the power settings for quite some time. Since the kernel interface apparently works, it doesn't sound like a drm driver bug. The kernel doesn't persist its settings, that's gnome's job. Bumping bug to the g-p-m queue. ** Package changed: xserver-xorg-video-intel (Ubuntu) => gnome-power-manager (Ubuntu) -- 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/954661 Title: backlight brightness not adjustable by default on Dell XPS 13 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-power-manager/+bug/954661/+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 954661] Re: backlight brightness not adjustable by default on Dell XPS 13
-- 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/954661 Title: backlight brightness not adjustable by default on Dell XPS 13 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-intel/+bug/954661/+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 954661] Re: backlight brightness not adjustable by default on Dell XPS 13
Oops, the command I mention above should be: /bin/echo 0 > /sys/class/backlight/intel_backlight/brightness Sorry for the typo. -- 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/954661 Title: backlight brightness not adjustable by default on Dell XPS 13 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-intel/+bug/954661/+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
