[Bug 922037] Re: "reduce brightness" key freezes system
Andreas Hasenack, this bug was reported a while ago and there hasn't been any activity in it recently. We were wondering if this is still an issue? If so, could you please test for this with the latest development release of Ubuntu? ISO images are available from http://cdimage.ubuntu.com/daily-live/current/ . If it remains an issue, could you please run the following command in the development release from a Terminal (Applications->Accessories->Terminal), as it will automatically gather and attach updated debug information to this report: apport-collect -p linux Also, could you please test the latest upstream kernel available following https://wiki.ubuntu.com/KernelMainlineBuilds ? It will allow additional upstream developers to examine the issue. Please do not test the daily folder, but the one all the way at the bottom. Once you've tested the upstream kernel, please comment on which kernel version specifically you tested. If this bug is fixed in the mainline kernel, please add the following tags: kernel-fixed-upstream kernel-fixed-upstream-VERSION-NUMBER where VERSION-NUMBER is the version number of the kernel you tested. For example: kernel-fixed-upstream-v3.11-rc5 This can be done by clicking on the yellow circle with a black pencil icon next to the word Tags located at the bottom of the bug description. As well, please remove the tag: needs-upstream-testing If the mainline kernel does not fix this bug, please add the following tags: kernel-bug-exists-upstream kernel-bug-exists-upstream-VERSION-NUMBER As well, please remove the tag: needs-upstream-testing Once testing of the upstream kernel is complete, please mark this bug's Status as Confirmed. Please let us know your results. Thank you for your understanding. ** Tags added: bios-outdated-1.46 needs-upstream-testing ** Summary changed: - "reduce brightness" key freezes system + 10de:1057 "reduce brightness" key freezes system ** Changed in: linux (Ubuntu) Status: Confirmed => Incomplete -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/922037 Title: 10de:1057 "reduce brightness" key freezes system To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/922037/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 922037] Re: "reduce brightness" key freezes system
This issue affects people at least one and half years and nothing happens. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/922037 Title: "reduce brightness" key freezes system To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/922037/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 922037] Re: "reduce brightness" key freezes system
Hi Licanueto, Can you upload the information of Dell N5010? Doing like the "bug description" and attachments for this bug. Thanks -Youquan -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/922037 Title: "reduce brightness" key freezes system To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/922037/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 922037] Re: "reduce brightness" key freezes system
Hi there, same here with a fresh 12.10. I'm on a Dell N5010 without any video card, just intel HD graphics -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/922037 Title: "reduce brightness" key freezes system To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/922037/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 922037] Re: "reduce brightness" key freezes system
Hello everyone, Please note that I'm experiencing the same problem on a Lenovo W520 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/922037 Title: "reduce brightness" key freezes system To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/922037/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 922037] Re: "reduce brightness" key freezes system
This issue comes from broken BIOS SMI (like generated when you kick specifica keys etc) hang because it does not aware of OS in x2apic mode. So the workround way is to blacklist issued platform. Yes. there are other T420 platforms have the issue (https://launchpadlibrarian.net/109393850/dmidecode.txt), so I tend to disable x2apic at all of T420 platforms. Refer to bug reports: https://bugzilla.kernel.org/show_bug.cgi?id=43054 https://bugs.launchpad.net/ubuntu/+source/linux/+bug/776999 Please try the patches if it works on your T420. ** Bug watch added: Linux Kernel Bug Tracker #43054 http://bugzilla.kernel.org/show_bug.cgi?id=43054 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/922037 Title: "reduce brightness" key freezes system To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/922037/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 922037] Re: "reduce brightness" key freezes system
Isn't this patch a bit naive? It would disable x2apic on my machine even in the scenario where the bug doesn't happen, like when I have nvidia disabled and only the intel graphics card enabled. Also, is that simple string comparison seems brittle. Aren't there other submodels of these laptops that are affected? -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/922037 Title: "reduce brightness" key freezes system To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/922037/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 922037] Re: "reduce brightness" key freezes system
Hi Lukas, No. this bug is about BIOS SMI broken in x2APIC mode. While the bug at https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1007765 does not enable x2APIC at all. so there are different bugs. Thanks -Youquan -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/922037 Title: "reduce brightness" key freezes system To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/922037/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 922037] Re: "reduce brightness" key freezes system
Hi, couldn't this one be a duplicate of https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1007765 or the other way around? -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/922037 Title: "reduce brightness" key freezes system To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/922037/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 922037] Re: "reduce brightness" key freezes system
** Tags added: patch -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/922037 Title: "reduce brightness" key freezes system To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/922037/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 922037] Re: "reduce brightness" key freezes system
Please try to apply the attached patch to 3.7-rc kernel, then try if it issue is fixed or not. ** Patch added: "set-x2apic-blacklist.patch" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/922037/+attachment/3442662/+files/0001-x86-apic-set-x2apic-blacklist.patch -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/922037 Title: "reduce brightness" key freezes system To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/922037/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 922037] Re: "reduce brightness" key freezes system
Didn't work. I was able to reproduce the problem with the live "cd" from quantal, 64bits. I downloaded the ISO just now, created a bootable pendrive, booted from it and in the desktop, once loaded, hit the key to dimm the backlight. Instant hard lock. So, the problem happens in quantal, 64bits, with lenovo's 83ET72WW (1.42 ) BIOS for my T420. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/922037 Title: "reduce brightness" key freezes system To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/922037/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 922037] Re: "reduce brightness" key freezes system
I just updated the BIOS using the bootable CD from lenovo's support site (worked nicely, btw!): root@nsn7:~# dmidecode -s bios-version 83ET72WW (1.42 ) I will try a 64bit install this weekend. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/922037 Title: "reduce brightness" key freezes system To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/922037/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 922037] Re: "reduce brightness" key freezes system
Hi, Can you update ThinkPad T420 BIOS to at least version 1.39, Version: 83ET69WW (1.39 ), then have a try to enable x2apic. Thanks -Youquan -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/922037 Title: "reduce brightness" key freezes system To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/922037/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 922037] Re: "reduce brightness" key freezes system
The same happens with the Thinkpad Edge E220S, in which the F7/8 keys hang the system with x2apic is enabled. When this happens, even the Thinklight stops responding (eventhough it responds during a kernel panic). I suspect that the BIOS just doesn't know how to handle x2apic mode, causing the entire machine to freeze up. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/922037 Title: "reduce brightness" key freezes system To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/922037/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 922037] Re: "reduce brightness" key freezes system
Ok, so this is the summary about what we found so far regarding this bug: - The freeze happens only on x86_64, because it has the interrupt remapping/x2apic and it is enabled, compared to the 32 bits version. - The freeze only happens with x2apic and interrupt remapping. Interrupt remapping and xapic works, only with x2apic mode enabled the freeze happens. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/922037 Title: "reduce brightness" key freezes system To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/922037/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 922037] Re: "reduce brightness" key freezes system
Here is the dmesg output with nox2apic and debug. ** Attachment added: "dmesg.txt" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/922037/+attachment/2736153/+files/dmesg.txt -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/922037 Title: "reduce brightness" key freezes system To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/922037/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 922037] Re: "reduce brightness" key freezes system
I tried booting with some kernel options, here are the results. Kernel was 3.2.0-14-generic #23 x86_64: - nointremap: no freeze - nox2apic: no freeze - x2apic_phys: didn't boot properly, corrupted graphics and eventually froze on its own -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/922037 Title: "reduce brightness" key freezes system To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/922037/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 922037] Re: "reduce brightness" key freezes system
I updated the BIOS of this laptop from 1.33 to 1.37, no change. I then installed precise alpha 2 and upgraded, also no change. Still freezes. Finally, I reinstalled precise alpha 2 but 32bits, not 64 as I had before, and now it works. I can dimm the backlight without having the laptop freeze. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/922037 Title: "reduce brightness" key freezes system To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/922037/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 922037] Re: "reduce brightness" key freezes system
Hm, LP ate my previous comment. Thanks Herton, that kernel booted, but the freeze problem is still there. As soon as I press Fn+End to decrease the brightness, the machine locks up. Not even the caps lock led reacts. ** Tags removed: kernel-unable-to-test-upstream ** Tags added: kernel-bug-exists-upstream ** Tags removed: needs-upstream-testing -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/922037 Title: "reduce brightness" key freezes system To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/922037/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 922037] Re: "reduce brightness" key freezes system
Andreas, can you try booting with intel_iommu=off kernel parameter? I think you hit another issue in 3.2, or try the newer 3.2.2 build from http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.2.2-precise/, which should have intel_iommu disabled by default. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/922037 Title: "reduce brightness" key freezes system To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/922037/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 922037] Re: "reduce brightness" key freezes system
Sorry, the machine wouldn't boot with the Precise kernel 3.2.0-030200-generic_3.2.0-030200.201201042035. The boot would start, but then the screen would be filled with error messages about some DMA read (see attached photo). ** Attachment added: "IMG_3162.JPG" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/922037/+attachment/2695732/+files/IMG_3162.JPG ** Tags added: kernel-unable-to-test-upstream -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/922037 Title: "reduce brightness" key freezes system To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/922037/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 922037] Re: "reduce brightness" key freezes system
Would it be possible for you to test the latest upstream kernel? It will allow additional upstream developers to examine the issue. Refer to https://wiki.ubuntu.com/KernelMainlineBuilds . If possible, please test the latest v3.2 kernel[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 by the mainline kernel, please add the following tag 'kernel-fixed-upstream-KERNEL-VERSION'. For example, if kernel version 3.2-rc1 fixed the issue, the tag would be: 'kernel-fixed- upstream-v3.2-rc1'. 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'. If you believe this bug does not require upstream testing, please add the tag: 'kernel-upstream-testing-not-needed'. Once testing of the upstream kernel is complete, please mark this bug as "Confirmed". Thanks in advance. [1] http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.2-precise/ ** Changed in: linux (Ubuntu) Importance: Undecided => Medium ** Tags added: needs-upstream-testing -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/922037 Title: "reduce brightness" key freezes system To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/922037/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 922037] Re: "reduce brightness" key freezes system
** Changed in: linux (Ubuntu) Status: New => Confirmed -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/922037 Title: "reduce brightness" key freezes system To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/922037/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 922037] Re: "reduce brightness" key freezes system
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/922037 Title: "reduce brightness" key freezes system To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/922037/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
