[Bug 1059276] Update Released

[Brian Murray]

The verification of this Stable Release Update has completed
successfully and the package has now been released to -updates.
Subsequently, the Ubuntu Stable Release Updates Team is being
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the event that you encounter a regression using the package from
-updates please report a new bug using ubuntu-bug and tag the bug report
regression-update so we can easily find any regresssions.

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https://bugs.launchpad.net/bugs/1059276

Title:
  Wine locks up when running multithreaded applications that touch both
  OpenGL and X11

Status in libxcb:
  Fix Released
Status in “libxcb” package in Ubuntu:
  Fix Released
Status in “libxcb” source package in Precise:
  Fix Released

Bug description:
  [IMPACT]

  Wine needs an update to libxcb to include upstream commit
  23911a707b8845bff52cd7853fc5d59fb0823cef. This commit fixes an issue
  where multithreaded applications lock up when they use both OpenGL and
  X11. This is being hit with a number of popular games on both quantal
  and precise.

  [TESTCASE 1 - No wine required]

  1) download https://bugs.freedesktop.org/attachment.cgi?id=67051
  2) compile and run: --- gcc -o test t.c -lxcb -lpthread; ./test
  3) When broken (without the patch) you'll just see "o" repeating over and over, when working properly (with the patch) you'll see both "o" and "x" appearing in the output.

  [TESTCASE 2 - Wine required]

  1) download http://bugs.winehq.org/attachment.cgi?id=41417 and extract it
  2) run wine graphics.exe and watch for it to get hung.
  3) It should fade out or be hung on a green screen soon after launch without the fix.

  [Regression Potential]

  This patch is in the stable libxcb 1.9 which was just released last
  week. There has been no known fallout from it being in quantal for 2
  weeks.

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