Xorg segfault in libdri.so with KSysGuard after several hours

[jason mitchell]

Binary package hint: xserver-xorg-core

Description: Ubuntu 8.10 (Release Candidate)
Release: 8.10

Oct 25 05:38:29 hummingbird kernel: [72765.210587] Xorg[29107]: segfault at 4d562d86 ip b7ac2d64 sp bffe59f0 error 4 in libdri.so[b7abf000+8000]

Oct 28 16:20:00 hummingbird kernel: [29997.357475] Xorg[8550]: segfault at b781d000 ip b7a24893 sp bf8bd460 error 4 in intel_drv.so[b7a10000+58000]

xserver-xorg-core:
  Installed: 2:1.5.2-2ubuntu3
  Candidate: 2:1.5.2-2ubuntu3
  Version table:
 *** 2:1.5.2-2ubuntu3 0
        500 http://us.archive.ubuntu.com intrepid/main Packages
        100 /var/lib/dpkg/status

xserver-xorg-video-intel:
  Installed: 2:2.4.1-1ubuntu10
  Candidate: 2:2.4.1-1ubuntu10
  Version table:
 *** 2:2.4.1-1ubuntu10 0
        500 http://us.archive.ubuntu.com intrepid/main Packages
        100 /var/lib/dpkg/status

Scenario:
  Kubuntu 8.10 RC burn-in testing: looping both tiobench and 'openssl speed'
    tiobench:
      Installed: 0.3.3-5
      Candidate: 0.3.3-5
      Version table:
       *** 0.3.3-5 0
            500 http://us.archive.ubuntu.com intrepid/universe Packages
            100 /var/lib/dpkg/status
    openssl:
      Installed: 0.9.8g-10.1ubuntu2
      Candidate: 0.9.8g-10.1ubuntu2
      Version table:
      *** 0.9.8g-10.1ubuntu2 0
            500 http://us.archive.ubuntu.com intrepid/main Packages
            100 /var/lib/dpkg/status

  Case 1: watch system load w/ KSysGuard
    Expected: run w/ no problem
    Result: X locked up after segfault in libdri.so; see attached dri-segv.txt

  Case 2: no KSysGuard, no monitoring, just konsole
    Expected: run w/ no problem
    Result: X locked up after segfault in intel_drv.so; see attached intel_drv-segv.txt

- Attached files in .zip
dmidecode.txt
dri-segv.txt
intel_drv-segv.txt
lspcivv.txt
strace.txt

[Bryce Harrington (bryce)]

[This is an automated message]

Hi jmitchel-lp-ubuntu,

Please attach the output of `lspci -vvnn` too.

[mogli (patrick-kohan-deactivatedaccount)]

Hey guys,
maybe I've got the same problem: sometimes my xserver shuts down, Ubuntu has to run in a low-graphics mode (VGA or something like this) and i have to restart my computer. I had this problem with several versions of Ubuntu.

[Bryce Harrington (bryce)]

mogli, from what you described it sounds like you don't have this particular bug.

[Bryce Harrington (bryce)]

jason, when attaching files, please attach them separately rather than in a tarball, as it causes us extra work to unpack them...

[Bryce Harrington (bryce)]

Are you able to reproduce this issue on Jaunty? If so, please collect a full backtrace - see http://wiki.ubuntu.com/X/Backtracing for directions. The information collected so far is insufficient for troubleshooting this bug.

[Bryce Harrington (bryce)]

We're closing this bug since it is has been some time with no response from the original reporter. However, if the issue still exists please feel free to reopen with the requested information. Also, if you could, please test against the latest development version of Ubuntu, since this confirms the bug is one we may be able to pass upstream for help.

[jason mitchell (jmitchel-lp-ubuntu)]

Good enough. I forgot to mention that this instability disappeared when the system was upgraded to the official release, from the developer release.