[Bug 925098] Re: [precise] bad interplay between X driver and 3.2.0 kernel

Wed Apr 11 13:34:31 UTC 2012

First we need to identify which upstream kernel first introduced the
bug.  It sounds like you did not see this bug in Oneiric and first saw
it after upgrading to Precise.

All of the upstream kernels are available at:
http://kernel.ubuntu.com/~kernel-ppa/mainline/

Basically  we want to identify the last kernel that did not have this bug, and the first kernel that did.  Then we can bisect between the two of them.  Can you test the first upstream(That is built for PAE) v3.2 kernel, which is v3.2-rc4?  The rc1 - rc3 kernels don't seem to have a pae kernel built.  The v3.2-rc4 kernel can be downloaded from:
http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.2-rc4-precise/

If the bug exists in v3.2-rc4, then we will want to test some of the
v3.1 kernels.

Thanks in advance!

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Title:
  [precise] bad interplay between X driver and 3.2.0 kernel

Status in “grub2” package in Ubuntu:
  Invalid
Status in “linux” package in Ubuntu:
  Confirmed

Bug description:
  Updated 2012/04/05:

  On 11.10 and earlier, if I used a default /etc/default/grub file, the
  kernel would boot fine and X would run fine.

  After upgrading to 12.04 today, I found that while lightdm would come
  up, after I logged into the desktop X was horribly broken with
  flashing colors and the like. This was my only clue in kern.log:

  Feb  1 14:12:58 harry kernel: [   33.626782] [drm:drm_mode_getfb]
  *ERROR* invalid framebuffer id

  I verified that booting into the 11.10 kernel on precise works as
  expected: I can always login to the desktop whether I access the grub
  menu or not.

  Occasionally I am able to login to the desktop (1 out of 7 times).
  Warm vs cold reboots does not seem to matter. Waiting to login to
  lightdm seems to increase my chances of a successful login to a
  functionaly desktop.

  ProblemType: Bug
  DistroRelease: Ubuntu 12.04
  Package: linux-image-3.2.0-12-generic-pae 3.2.0-12.21
  ProcVersionSignature: Ubuntu 3.2.0-12.21-generic-pae 3.2.2
  Uname: Linux 3.2.0-12-generic-pae i686
  AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24.
  AplayDevices: aplay: device_list:242: no soundcards found...
  ApportVersion: 1.91-0ubuntu1
  Architecture: i386
  ArecordDevices: arecord: device_list:242: no soundcards found...
  AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/by-path', '/dev/snd/controlC0', '/dev/snd/hwC0D2', '/dev/snd/pcmC0D0c', '/dev/snd/pcmC0D0p', '/dev/snd/seq', '/dev/snd/timer'] failed with exit code 1:
  CRDA: Error: command ['iw', 'reg', 'get'] failed with exit code 1: nl80211 not found.
  Date: Wed Feb  1 14:26:34 2012
  HibernationDevice: RESUME=UUID=cff0bc83-50c8-4d48-9481-d28efd2e9380
  InstallationMedia: Ubuntu 10.04 LTS "Lucid Lynx" - Release i386 (20100429)
  IwConfig:
   lo        no wireless extensions.

   vboxnet0  no wireless extensions.

   eth0      no wireless extensions.
  ProcEnviron:
   LC_CTYPE=en_US.UTF-8
   LC_COLLATE=en_US.UTF-8
   LANG=en_US.UTF-8
   LC_MESSAGES=en_US.UTF-8
   SHELL=/bin/bash
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.2.0-12-generic-pae root=UUID=c646f9ef-dc15-4a2a-9dc9-649a5a03589a ro quiet splash vt.handoff=7
  PulseSinks: Error: command ['pacmd', 'list-sinks'] failed with exit code 1: No PulseAudio daemon running, or not running as session daemon.
  PulseSources: Error: command ['pacmd', 'list-sources'] failed with exit code 1: No PulseAudio daemon running, or not running as session daemon.
  RelatedPackageVersions:
   linux-restricted-modules-3.2.0-12-generic-pae N/A
   linux-backports-modules-3.2.0-12-generic-pae  N/A
   linux-firmware                                1.68
  RfKill:

  SourcePackage: linux
  StagingDrivers: mei
  UpgradeStatus: Upgraded to precise on 2012-02-01 (0 days ago)
  dmi.bios.date: 08/04/2006
  dmi.bios.vendor: Intel Corp.
  dmi.bios.version: CO96510J.86A.4462.2006.0804.2059
  dmi.board.asset.tag: Base Board Asset Tag
  dmi.board.name: DQ965GF
  dmi.board.vendor: Intel Corporation
  dmi.board.version: AAD41676-400
  dmi.chassis.type: 2
  dmi.modalias: dmi:bvnIntelCorp.:bvrCO96510J.86A.4462.2006.0804.2059:bd08/04/2006:svn:pn:pvr:rvnIntelCorporation:rnDQ965GF:rvrAAD41676-400:cvn:ct2:cvr:

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