kernel-packages team mailing list archive

["Christopher M. Penalver" <christopher.m.penalver@xxxxxxxxx>]

Mattieu Baerts:
>'I didn't have this bug with Precise and Raring (I've not tested with Precise and the kernel 3.8 but I guess we still have this bug)"

This statement seems to contradict itself. You are saying you did not
have the bug in Precise or Raring, but then you haven't tested Precise
or Raring. Could you please clarify?

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https://bugs.launchpad.net/bugs/1170917

Title:
  Powering down inactive GPU while running X causes NULL pointer
  dereference

Status in The Linux Kernel:
  Confirmed
Status in “linux” package in Ubuntu:
  Incomplete

Bug description:
  Hello,

  I'm using Ubuntu Raring 13.04 with the latest version of the kernel
  available in these repos (3.8.0-19.29).

  Sometimes I have a kernel OOPS at startup and it seems it's because I switch off my ATI card.
  I added this line in my /etc/rc.local file:
     echo OFF > /sys/kernel/debug/vgaswitcheroo/switch

  I don't have this bug each time but I guess it depends if this
  previous command is launched before or after that X11's launch.

  I'm using this card: Mobility Radeon HD 4650.

  It seems that this bug has already reported to there: https://bugzilla.kernel.org/show_bug.cgi?id=49531 and https://bugs.freedesktop.org/show_bug.cgi?id=61529
  But I guess it can be interesting to track this bug on Launchpad.

  ProblemType: Bug
  DistroRelease: Ubuntu 13.04
  Package: linux-image-3.8.0-19-generic 3.8.0-19.29
  ProcVersionSignature: Ubuntu 3.8.0-19.29-generic 3.8.8
  Uname: Linux 3.8.0-19-generic x86_64
  ApportVersion: 2.9.2-0ubuntu8
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  mbaerts    2074 F.... pulseaudio
   /dev/snd/pcmC0D0p:   mbaerts    2074 F...m pulseaudio
  Date: Sat Apr 20 11:41:12 2013
  HibernationDevice: RESUME=UUID=06229bec-927d-4cfa-9a82-f9949d5151ca
  InstallationDate: Installed on 2011-08-10 (618 days ago)
  InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Alpha amd64 (20110803.1)
  Lsusb:
   Bus 001 Device 002: ID 8087:0020 Intel Corp. Integrated Rate Matching Hub
   Bus 002 Device 002: ID 8087:0020 Intel Corp. Integrated Rate Matching Hub
   Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
   Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
   Bus 001 Device 003: ID 064e:a130 Suyin Corp.
  MachineType: Medion P662X
  MarkForUpload: True
  ProcFB:
   0 inteldrmfb
   1 radeondrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.8.0-19-generic root=UUID=e7e166e5-3bef-4daf-88a1-5368a679c4a0 ro profile
  RelatedPackageVersions:
   linux-restricted-modules-3.8.0-19-generic N/A
   linux-backports-modules-3.8.0-19-generic  N/A
   linux-firmware                            1.106
  RfKill:
   0: phy0: Wireless LAN
   	Soft blocked: no
   	Hard blocked: no
  SourcePackage: linux
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 04/13/2010
  dmi.bios.vendor: American Megatrends Inc.
  dmi.bios.version: 202
  dmi.board.asset.tag: To be filled by O.E.M.
  dmi.board.name: H36QM
  dmi.board.vendor: To be filled by O.E.M.
  dmi.board.version: 1.0
  dmi.chassis.asset.tag: To Be Filled By O.E.M.
  dmi.chassis.type: 10
  dmi.chassis.vendor: PEGATRON CORPORATION
  dmi.chassis.version: 1.0
  dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr202:bd04/13/2010:svnMedion:pnP662X:pvr1.0:rvnTobefilledbyO.E.M.:rnH36QM:rvr1.0:cvnPEGATRONCORPORATION:ct10:cvr1.0:
  dmi.product.name: P662X
  dmi.product.version: 1.0
  dmi.sys.vendor: Medion

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