kernel-packages team mailing list archive

[Launchpad Bug Tracker <868498@xxxxxxxxxxxxxxxxxx>]

[Expired for linux (Ubuntu) because there has been no activity for 60
days.]

** Changed in: linux (Ubuntu)
       Status: Incomplete => Expired

-- 
You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux in Ubuntu.
https://bugs.launchpad.net/bugs/868498

Title:
  Kernel update broke graphics driver due to gcc segfault

Status in “linux” package in Ubuntu:
  Expired

Bug description:
  After upgrading from 2.6.32-33-generic to 2.6.32-34-generic X was no
  longer working on my system. During install an alert had appeared in
  the Gnome status bar indicating an install error for the psb-kernel-
  source driver for the graphics chip in this machine. The alert did not
  provide any information on where to find logs from the failing
  install, thus making further debugging hard. Moreover the button to
  report the bug directly from the alert was not functional.

  After a bit of searching I found out that I could run the driver build manually by running this command as root:
  dkms ^Cild -k 2.6.32-34-generic -m psb-kernel-source -v 4.42.0

  This also failed, but at least pointed at the logfile in /var/lib/dkms
  /psb-kernel-source/4.42.0/build/make.log

  In this logfile I could see that the reason for the failure was that
  gcc was segfaulting during the build. The segfault would happen at
  different points during the build.

  The following workaround worked for me:
  1. Add "kernel.randomize_va_space = 0" to /etc/sysctl.conf
  2. Reboot
  3. Uninstall linux-image-2.6.32-34-generic
  4. Install linux-image-2.6.32-34-generic again
  5. Reboot

  This is a regression as no such problems happened during earlier
  kernel upgrades. The kernel has been upgraded a few times already on
  this machine without problems. The last upgrade that worked without
  problems was to 2.6.32-33-generic, which worked flawless and would
  also have performed a build of this driver.

  I don't know which component is responsible for the gcc segfaults, so
  I am reporting this against my best guess.

  ProblemType: Bug
  DistroRelease: Ubuntu 10.04
  Package: linux-image (not installed)
  Regression: Yes
  Reproducible: Yes
  ProcVersionSignature: Ubuntu 2.6.32-34.77-generic 2.6.32.44+drm33.19
  Uname: Linux 2.6.32-34-generic i686
  AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.21.
  Architecture: i386
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC1:  kasperd    1782 F.... pulseaudio
   /dev/snd/controlC0:  kasperd    1782 F.... pulseaudio
  CRDA: Error: [Errno 2] No such file or directory
  Card0.Amixer.info:
   Card hw:0 'MID'/'HDA Intel MID at 0xb0050000 irq 22'
     Mixer name	: 'Realtek ALC662 rev1'
     Components	: 'HDA:10ec0662,10ec0662,00100101'
     Controls      : 33
     Simple ctrls  : 19
  Card1.Amixer.info:
   Card hw:1 'Audio'/'USB Audio at usb-0000:00:1d.0-2, full speed'
     Mixer name	: 'USB Mixer'
     Components	: 'USB0d8c:0006'
     Controls      : 12
     Simple ctrls  : 7
  Date: Wed Oct  5 17:56:55 2011
  EcryptfsInUse: Yes
  HibernationDevice: RESUME=UUID=e14584e1-caed-4150-9e25-e364d27bebe3
  InstallationMedia: Ubuntu 10.04.3 LTS "Lucid Lynx" - Release i386 (20110720.1)
  MachineType: CompuLab CM-iAM/SBC-FITPC2i
  ProcCmdLine: BOOT_IMAGE=/vmlinuz-2.6.32-34-generic root=UUID=8bf29c49-594d-41b8-8513-ac3cf4bf4e1b ro crashkernel=384M-2G:64M,2G-:128M rootdir=lucid
  ProcEnviron:
   PATH=(custom, user)
   LANG=en_DK.utf8
   SHELL=/bin/bash
  RelatedPackageVersions: linux-firmware 1.34.7
  RfKill:
   
  SourcePackage: linux
  dmi.bios.date: 09/14/2010
  dmi.bios.vendor: Phoenix Technologies LTD
  dmi.bios.version: NAPA0001.86C.0000.D.1009141059
  dmi.board.name: CM-iAM/SBC-FITPC2i
  dmi.board.vendor: Intel Corporation
  dmi.board.version: 1.x
  dmi.chassis.asset.tag: No Asset Tag
  dmi.chassis.type: 1
  dmi.chassis.vendor: OEM
  dmi.chassis.version: N/A
  dmi.modalias: dmi:bvnPhoenixTechnologiesLTD:bvrNAPA0001.86C.0000.D.1009141059:bd09/14/2010:svnCompuLab:pnCM-iAM/SBC-FITPC2i:pvrNotApplicable:rvnIntelCorporation:rnCM-iAM/SBC-FITPC2i:rvr1.x:cvnOEM:ct1:cvrN/A:
  dmi.product.name: CM-iAM/SBC-FITPC2i
  dmi.product.version: Not Applicable
  dmi.sys.vendor: CompuLab

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/868498/+subscriptions