[ilk mesa] overwritten video memory with pixel data

[Chuck Tuffli]

Occasionally when resizing windows on Xubuntu 14.04, the desktop freezes and does not respond to keyboard presses or mouse clicks. When this happens, it is possible to switch to a virtual terminal and execute shell commands. This freeze does not happen everytime a window is resized, but it does happen approximately once per week.

The output from dmesg shows:

[162720.545967] [drm] stuck on render ring
[162720.546032] [drm] GPU crash dump saved to /sys/class/drm/card0/error
...

Requested debug information

[1994] lsb_release -rd
Description: Ubuntu 14.04.1 LTS
Release: 14.04

[1995] apt-cache policy xserver-xorg-video-intel
xserver-xorg-video-intel:
  Installed: 2:2.99.910-0ubuntu1
  Candidate: 2:2.99.910-0ubuntu1
  Version table:
 *** 2:2.99.910-0ubuntu1 0
        500 http://us.archive.ubuntu.com/ubuntu/ trusty/main amd64 Packages
        100 /var/lib/dpkg/status

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: xserver-xorg-video-intel 2:2.99.910-0ubuntu1
ProcVersionSignature: Ubuntu 3.13.0-34.60-generic 3.13.11.4
Uname: Linux 3.13.0-34-generic x86_64
ApportVersion: 2.14.1-0ubuntu3.3
Architecture: amd64
CurrentDesktop: XFCE
Date: Wed Aug 20 14:25:09 2014
InstallationDate: Installed on 2014-04-09 (132 days ago)
InstallationMedia: Xubuntu 14.04 LTS "Trusty Tahr" - Beta amd64 (20140326)
SourcePackage: xserver-xorg-video-intel
UpgradeStatus: No upgrade log present (probably fresh install)

[penalvch (penalvch)]

Chuck Tuffli, thank you for taking the time to report this bug and helping to make Ubuntu better. Please execute the following command, as it will automatically gather debugging information, in a terminal:
apport-collect -p xorg 1359415

Please ensure you have the package xdiagnose installed, and that you click the Yes button for attaching additional debugging information.

[Launchpad Janitor (janitor)]

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