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[Bug 1514102] Re: Intermittent graphics corruption


Ian Bruntlett:

>"BTW, the PC in question was originally running (32 bit) Windows XP. As
we are experiencing problem with graphics when running 64 bit software,
perhaps I should install Lubuntu 15.10 i386 and see if that works?"

While you are welcome to do that as a test (as the release and
architecture are supported downstream via the L/Ubuntu Community), it
wouldn't be recommended to use a i386 architecture going forward as it
is deprecated upstream.

Despite this, Could you please test the latest upstream kernel available
from the very top line at the top of the page from
http://kernel.ubuntu.com/~kernel-ppa/mainline/?C=N;O=D (the release
names are irrelevant for testing, and please do not test the daily
folder)? Install instructions are available at
https://wiki.ubuntu.com/Kernel/MainlineBuilds . This will allow
additional upstream developers to examine the issue.

If the latest kernel did not allow you to test to the issue (ex. you couldn't boot into the OS) please make a comment in your report about this, and continue to test the next most recent kernel version until you can test to the issue. Once you've tested the upstream kernel, please comment on which kernel version specifically you tested. If this issue is fixed in the mainline kernel, please add the following tags by clicking on the yellow circle with a black pencil icon, next to the word Tags, located at the bottom of the report description:

Where X, Y, and Z are numbers corresponding to the kernel version.

If the mainline kernel does not fix the issue, please add the following tags:

Please note, an error to install the kernel does not fit the criteria of

Once testing of the latest upstream kernel is complete, please mark this
report's Status as Confirmed. Please let us know your results.

Thank you for your understanding.

** Package changed: xorg (Ubuntu) => linux (Ubuntu)

** Changed in: linux (Ubuntu)
   Importance: Low => Medium

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  Intermittent graphics corruption

Status in linux package in Ubuntu:

Bug description:
  Every so often the screen would be corrupted with horizontal lines of

  WORKAROUND: Add to /etc/default/grub GRUB_CMDLINE_LINUX nomodeset:
  sudo update-grub

  Now the system will only allow VGA 640x480 graphics.

  ProblemType: Bug
  DistroRelease: Ubuntu 15.10
  Package: xorg 1:7.7+7ubuntu4
  ProcVersionSignature: Ubuntu 4.2.0-17.21-generic 4.2.3
  Uname: Linux 4.2.0-17-generic x86_64
  ApportVersion: 2.19.1-0ubuntu4
  Architecture: amd64
  CurrentDesktop: LXDE
  Date: Sat Nov  7 18:44:01 2015
  InstallationDate: Installed on 2015-11-07 (0 days ago)
  InstallationMedia: Lubuntu 15.10 "Wily Werewolf" - Release amd64 (20151021)
  SourcePackage: xorg
  UpgradeStatus: No upgrade log present (probably fresh install)

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