desktop-packages team mailing list archive

[Brian Murray <brian@xxxxxxxxxx>]

Hello Thomas, or anyone else affected,

Accepted mesa-lts-trusty into precise-proposed. The package will build
now and be available at http://launchpad.net/ubuntu/+source/mesa-lts-
trusty/10.1.3-0ubuntu0.2~precise1 in a few hours, and then in the
-proposed repository.

Please help us by testing this new package.  See
https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to
enable and use -proposed.  Your feedback will aid us getting this update
out to other Ubuntu users.

If this package fixes the bug for you, please add a comment to this bug,
mentioning the version of the package you tested, and change the tag
from verification-needed to verification-done. If it does not fix the
bug for you, please add a comment stating that, and change the tag to
verification-failed.  In either case, details of your testing will help
us make a better decision.

Further information regarding the verification process can be found at
https://wiki.ubuntu.com/QATeam/PerformingSRUVerification .  Thank you in
advance!

** Changed in: mesa-lts-trusty (Ubuntu Precise)
       Status: Confirmed => Fix Committed

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https://bugs.launchpad.net/bugs/1365490

Title:
  ubuntu 12.04.5 broken on VMware

Status in “mesa” package in Ubuntu:
  Fix Released
Status in “mesa-lts-trusty” package in Ubuntu:
  Invalid
Status in “mesa-lts-trusty” source package in Precise:
  Fix Committed
Status in “mesa” source package in Trusty:
  Fix Committed

Bug description:
  [Impact]

  A user might find Ubuntu 12.04.5 unusable on vmware because he would
  face a black screen after logging in. Although there is a workaround
  (disabling 3D) a user may have given up at that point.

  Backporting will help the user run the distro after upgrading, so I
  believe it's highly justified.

  [Test Case]

  On VMware Workstation 10, Install Ubuntu 12.04.5, preferrably using "easy install".
  Boot the VM, log in. You'll see a black screen only.

  [Regression Potential]

  The bug affects a function that impots a shared buffer to the 3D
  driver. The function is completely broken by the bug. Even if the
  patch should introduce another type of breakage, the problem couldn't
  be much worse than it already is, and should be confined to the
  specific function in question.

  [Other info]

  Due to different stack ordering of automatic variables, the bug may or
  may not be visible depending on the C compiler and the level of
  optimization used. For example, if -O0 -g is used the bug is not
  visible on 12.04.5. I have not encountered any symptoms of the bug yet
  on 14.04.

  [ Original bug report ]
  Ubuntu 12.04.5 shows a black screen after login with 3D enabled on
  VMware. This is due to a bug in the svga gallium driver's winsys.

  It's recently fixed in mesa master commit 2d6206140a, "winsys/svga: Fix
  incorrect type usage in IOCTL v2", with a request to backport to mesa
  stable, but I'm not sure whether anyone's still maintaining the 10.1 branch.

  Due to the severity of the symptoms it would be greatly appreciated if
  this fix could be incorporated in the
  libgl1-mesa-dri-lts-trusty package as soon as possible.

  Unfortunately it's affecting the package on the installation iso. Is
  there anything that can be done about that?

  Thanks,
  Thomas

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