[Bug 1059276] Re: Wine locks up when running multithreaded applications that touch both OpenGL and X11
This bug was fixed in the package libxcb - 1.8.1-1ubuntu0.1 --- libxcb (1.8.1-1ubuntu0.1) precise-proposed; urgency=low * Add 100-fix-multi-thread-deadlock.patch: Fixes a deadlock affecting some wine applications. (LP: #1059276) -- Robert HookerMon, 01 Oct 2012 14:08:35 -0400 ** Changed in: libxcb (Ubuntu Precise) Status: Fix Committed => Fix Released -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1059276 Title: Wine locks up when running multithreaded applications that touch both OpenGL and X11 To manage notifications about this bug go to: https://bugs.launchpad.net/libxcb/+bug/1059276/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1059276] Re: Wine locks up when running multithreaded applications that touch both OpenGL and X11
Thanks Brian, sorry it took me so long to test - trying to get my dissertation done. The package works great in both test scenarios that I've used to check for the bug (TESTCASE 1 and operating a variety of affected apps with Wine). ** Tags removed: verification-needed ** Tags added: verification-done -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1059276 Title: Wine locks up when running multithreaded applications that touch both OpenGL and X11 To manage notifications about this bug go to: https://bugs.launchpad.net/libxcb/+bug/1059276/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1059276] Re: Wine locks up when running multithreaded applications that touch both OpenGL and X11
Hello Erich, or anyone else affected, Accepted libxcb into precise-proposed. The package will build now and be available at http://launchpad.net/ubuntu/+source/libxcb/1.8.1-1ubuntu0.1 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 change the bug tag from verification-needed to verification-done. If it does not, 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! ** Tags added: verification-needed ** Also affects: libxcb (Ubuntu Precise) Importance: Undecided Status: New ** Changed in: libxcb (Ubuntu Precise) Status: New => Fix Committed ** Changed in: libxcb (Ubuntu Precise) Importance: Undecided => Medium -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1059276 Title: Wine locks up when running multithreaded applications that touch both OpenGL and X11 To manage notifications about this bug go to: https://bugs.launchpad.net/libxcb/+bug/1059276/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1059276] Re: Wine locks up when running multithreaded applications that touch both OpenGL and X11
** Description changed: [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. + 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 upstream libxcb repository and will be in libxcb - 1.8.2 when it releases. + 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. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1059276 Title: Wine locks up when running multithreaded applications that touch both OpenGL and X11 To manage notifications about this bug go to: https://bugs.launchpad.net/libxcb/+bug/1059276/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1059276] Re: Wine locks up when running multithreaded applications that touch both OpenGL and X11
Launchpad has imported 17 comments from the remote bug at https://bugs.freedesktop.org/show_bug.cgi?id=54671. If you reply to an imported comment from within Launchpad, your comment will be sent to the remote bug automatically. Read more about Launchpad's inter-bugtracker facilities at https://help.launchpad.net/InterBugTracking. On 2012-09-08T15:28:05+00:00 Erich Hoover wrote: Now that Wine is no longer locking around all X calls we're seeing lockups in applications that use both OpenGL (through Direct3D) and X11 (through GDI) simultaneously in separate threads. It appears that something strange is happening in _XReply that causes the applications to hang indefinitely in xcb_wait_for_reply when both threads happen to use the same sequence number at the same time. I'm not really an X expert, so I'd really appreciate some help trying to track this down. On the Wine end we have a bug open (http://bugs.winehq.org/show_bug.cgi?id=31406) to track this issue, but we're pretty sure it's something in xlib or xcb. Reply at: https://bugs.launchpad.net/ubuntu/+source/libxcb/+bug/1059276/comments/0 On 2012-09-09T20:37:29+00:00 Erich Hoover wrote: Created attachment 66895 Hack to work around the problem Ok, so I've been trying to find enough information about what's going on to provide something useful for fixing this. Working off of the latest git the problem appears to be solvable using the attached hack and is triggered when Wine calls XCheckIfEvent in combination with OpenGL routines. Reply at: https://bugs.launchpad.net/ubuntu/+source/libxcb/+bug/1059276/comments/1 On 2012-09-11T17:42:27+00:00 Erich Hoover wrote: Created attachment 66985 Patch to keep Wine applications from locking up Ok, the attached patch seems to fix the problem without killing the framerate of games using OpenGL. However, I'm concerned that this sets up a ping-pong scenario between the threads and is therefore just obscuring the issue. Feedback would be greatly appreciated. Reply at: https://bugs.launchpad.net/ubuntu/+source/libxcb/+bug/1059276/comments/2 On 2012-09-11T20:46:11+00:00 Psychon-d wrote: Since IRC didn't feel helpful: Could you provide backtraces for the deadlock that you are seeing? What exactly happens without this patch? Also, which versions of libxcb are you using? Reply at: https://bugs.launchpad.net/ubuntu/+source/libxcb/+bug/1059276/comments/3 On 2012-09-11T21:32:56+00:00 Erich Hoover wrote: Created attachment 67004 Backtrace of the threads involved in the lockup (In reply to comment #3) > Since IRC didn't feel helpful: Could you provide backtraces for the deadlock > that you are seeing? What exactly happens without this patch? > > Also, which versions of libxcb are you using? Sorry, is IRC your preferred mode of communication? Without the patch we see a lockup in some of Wine's mutexes because the other thread held the mutex and then got stuck in xcb_wait_for_reply (see backtrace). I'm currently using the libxcb from git. If it helps then I can add debug symbols to some of the other libraries you see in the backtrace (libx11 and libxrandr). Reply at: https://bugs.launchpad.net/ubuntu/+source/libxcb/+bug/1059276/comments/4 On 2012-09-11T22:02:39+00:00 Psychon-d wrote: Does it always hang inside of XRRGetCrtcInfo? That function doesn't do anything special and I don't really see why this should indefinitely wait for a reply from the X11 server. Also, unlocking the Xlib display before polling for the reply shouldn't make any difference on this at all. :-/ Reply at: https://bugs.launchpad.net/ubuntu/+source/libxcb/+bug/1059276/comments/5 On 2012-09-11T23:23:06+00:00 Erich Hoover wrote: (In reply to comment #5) > Does it always hang inside of XRRGetCrtcInfo? That function doesn't do > anything > special and I don't really see why this should indefinitely wait for a reply > from the X11 server. No, it hangs inside all sorts of different functions. Sometimes it's just a direct _XReply call (not sure how that happens). The most common parent (from maybe 10-20 runs) is: 6 0xf6f332d5 in libgl.so.1 (+0x8f2d4) (0x022de488) > Also, unlocking the Xlib display before polling for the > reply shouldn't make any difference on this at all. :-/ I'm not sure what you mean here, do you mean in attachment 66895 where I remove the unlock so that it stays locked while it goes through xcb_wait_for_reply? I suspect what's happening is that one thread is depleting the fd of events, so the other thread han
[Bug 1059276] Re: Wine locks up when running multithreaded applications that touch both OpenGL and X11
** Branch linked: lp:ubuntu/libxcb -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1059276 Title: Wine locks up when running multithreaded applications that touch both OpenGL and X11 To manage notifications about this bug go to: https://bugs.launchpad.net/libxcb/+bug/1059276/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1059276] Re: Wine locks up when running multithreaded applications that touch both OpenGL and X11
This bug was fixed in the package libxcb - 1.8.1-1ubuntu1 --- libxcb (1.8.1-1ubuntu1) quantal; urgency=low * Add 100-fix-multi-thread-deadlock.patch: Fixes a deadlock affecting some wine applications. (LP: #1059276) -- Robert HookerMon, 01 Oct 2012 14:08:35 -0400 ** Changed in: libxcb (Ubuntu) Status: Triaged => Fix Released -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1059276 Title: Wine locks up when running multithreaded applications that touch both OpenGL and X11 To manage notifications about this bug go to: https://bugs.launchpad.net/libxcb/+bug/1059276/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1059276] Re: Wine locks up when running multithreaded applications that touch both OpenGL and X11
Packages for testing before they are sponsored are available in https://launchpad.net/~sarvatt/+archive/sru8 if so desired -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1059276 Title: Wine locks up when running multithreaded applications that touch both OpenGL and X11 To manage notifications about this bug go to: https://bugs.launchpad.net/libxcb/+bug/1059276/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1059276] Re: Wine locks up when running multithreaded applications that touch both OpenGL and X11
Debdiff containing the fix targetted to quantal ** Patch added: "libxcb_1.8.1-1ubuntu1.debdiff" https://bugs.launchpad.net/ubuntu/+source/libxcb/+bug/1059276/+attachment/3362630/+files/libxcb_1.8.1-1ubuntu1.debdiff -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1059276 Title: Wine locks up when running multithreaded applications that touch both OpenGL and X11 To manage notifications about this bug go to: https://bugs.launchpad.net/libxcb/+bug/1059276/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1059276] Re: Wine locks up when running multithreaded applications that touch both OpenGL and X11
Debdiff containing the fix targetted to precise-proposed ** Patch added: "libxcb_1.8.1-1ubuntu0.1.debdiff" https://bugs.launchpad.net/ubuntu/+source/libxcb/+bug/1059276/+attachment/3362634/+files/libxcb_1.8.1-1ubuntu0.1.debdiff -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1059276 Title: Wine locks up when running multithreaded applications that touch both OpenGL and X11 To manage notifications about this bug go to: https://bugs.launchpad.net/libxcb/+bug/1059276/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1059276] Re: Wine locks up when running multithreaded applications that touch both OpenGL and X11
** Patch removed: "libxcb_1.8.1-1ubuntu1.debdiff" https://bugs.launchpad.net/ubuntu/+source/libxcb/+bug/1059276/+attachment/3362467/+files/libxcb_1.8.1-1ubuntu1.debdiff ** Patch removed: "libxcb_1.8.1-1ubuntu0.1.debdiff" https://bugs.launchpad.net/ubuntu/+source/libxcb/+bug/1059276/+attachment/3362468/+files/libxcb_1.8.1-1ubuntu0.1.debdiff -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1059276 Title: Wine locks up when running multithreaded applications that touch both OpenGL and X11 To manage notifications about this bug go to: https://bugs.launchpad.net/libxcb/+bug/1059276/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1059276] Re: Wine locks up when running multithreaded applications that touch both OpenGL and X11
** Description changed: + [IMPACT] + Wine needs an update to libxcb to include upstream commit - 23911a707b8845bff52cd7853fc5d59fb0823cef. This commit fixes an issue + 23911a707b8845bff52cd7853fc5d59fb0823cef. This commit fixes an issue where multithreaded applications lock up when they use both OpenGL and - X11. + X11. This is being hit with a number of popular games on both quantal + and precise. - Test case (1, requires Wine): - download http://bugs.winehq.org/attachment.cgi?id=41417 and extract it, run "wine graphics.exe" and watch for it to get hung. + [TESTCASE 1 - No wine required] - Test case (2, Wine not required): - download https://bugs.freedesktop.org/attachment.cgi?id=67051 , compile and run: - --- - gcc -o test t.c -lxcb -lpthread; ./test - --- - 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. + 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 upstream libxcb repository and will be in libxcb + 1.8.2 when it releases. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1059276 Title: Wine locks up when running multithreaded applications that touch both OpenGL and X11 To manage notifications about this bug go to: https://bugs.launchpad.net/libxcb/+bug/1059276/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1059276] Re: Wine locks up when running multithreaded applications that touch both OpenGL and X11
** Description changed: - [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. - 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. + Test case (1, requires Wine): + download http://bugs.winehq.org/attachment.cgi?id=41417 and extract it, run "wine graphics.exe" and watch for it to get hung. - [TESTCASE] - - 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 upstream libxcb repository and will be in libxcb - 1.8.2 when it releases. + Test case (2, Wine not required): + download https://bugs.freedesktop.org/attachment.cgi?id=67051 , compile and run: + --- + gcc -o test t.c -lxcb -lpthread; ./test + --- + 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. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1059276 Title: Wine locks up when running multithreaded applications that touch both OpenGL and X11 To manage notifications about this bug go to: https://bugs.launchpad.net/libxcb/+bug/1059276/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1059276] Re: Wine locks up when running multithreaded applications that touch both OpenGL and X11
** Description changed: - Test case: - download http://bugs.winehq.org/attachment.cgi?id=41417 and extract it, run wine graphics.exe and watch for it to get hung. + [IMPACT] Wine needs an update to libxcb to include upstream commit - 23911a707b8845bff52cd7853fc5d59fb0823cef. This commit fixes an issue + 23911a707b8845bff52cd7853fc5d59fb0823cef. This commit fixes an issue where multithreaded applications lock up when they use both OpenGL and - X11. + X11. This is being hit with a number of popular games on both quantal + and precise. + + [TESTCASE] + + 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 upstream libxcb repository and will be in libxcb + 1.8.2 when it releases. ** Description changed: [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] - download http://bugs.winehq.org/attachment.cgi?id=41417 and extract it + 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. + 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 upstream libxcb repository and will be in libxcb 1.8.2 when it releases. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1059276 Title: Wine locks up when running multithreaded applications that touch both OpenGL and X11 To manage notifications about this bug go to: https://bugs.launchpad.net/libxcb/+bug/1059276/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1059276] Re: Wine locks up when running multithreaded applications that touch both OpenGL and X11
** Tags added: patch ** Tags added: precise quantal -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1059276 Title: Wine locks up when running multithreaded applications that touch both OpenGL and X11 To manage notifications about this bug go to: https://bugs.launchpad.net/libxcb/+bug/1059276/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1059276] Re: Wine locks up when running multithreaded applications that touch both OpenGL and X11
Debdiff containing the fix targetted to precise-proposed ** Patch added: "libxcb_1.8.1-1ubuntu0.1.debdiff" https://bugs.launchpad.net/ubuntu/+source/libxcb/+bug/1059276/+attachment/3362468/+files/libxcb_1.8.1-1ubuntu0.1.debdiff -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1059276 Title: Wine locks up when running multithreaded applications that touch both OpenGL and X11 To manage notifications about this bug go to: https://bugs.launchpad.net/libxcb/+bug/1059276/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1059276] Re: Wine locks up when running multithreaded applications that touch both OpenGL and X11
Debdiff containing the fix targetted to quantal ** Patch added: "libxcb_1.8.1-1ubuntu1.debdiff" https://bugs.launchpad.net/ubuntu/+source/libxcb/+bug/1059276/+attachment/3362467/+files/libxcb_1.8.1-1ubuntu1.debdiff -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1059276 Title: Wine locks up when running multithreaded applications that touch both OpenGL and X11 To manage notifications about this bug go to: https://bugs.launchpad.net/libxcb/+bug/1059276/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1059276] Re: Wine locks up when running multithreaded applications that touch both OpenGL and X11
** Description changed: + Test case: + download http://bugs.winehq.org/attachment.cgi?id=41417 and extract it, run wine graphics.exe and watch for it to get hung. + 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. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1059276 Title: Wine locks up when running multithreaded applications that touch both OpenGL and X11 To manage notifications about this bug go to: https://bugs.launchpad.net/libxcb/+bug/1059276/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1059276] Re: Wine locks up when running multithreaded applications that touch both OpenGL and X11
** Changed in: libxcb (Ubuntu) Status: New => Triaged ** Changed in: libxcb (Ubuntu) Importance: Undecided => Medium ** Changed in: libxcb (Ubuntu) Assignee: (unassigned) => Canonical X.org (canonical-x) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1059276 Title: Wine locks up when running multithreaded applications that touch both OpenGL and X11 To manage notifications about this bug go to: https://bugs.launchpad.net/libxcb/+bug/1059276/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
