Hello Margarita, or anyone else affected, Accepted nux into trusty-proposed. The package will build now and be available at http://launchpad.net/ubuntu/+source/nux/4.0.6+14.04.20140930-0ubuntu1 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: nux (Ubuntu Trusty) Status: Confirmed => Fix Committed ** Tags added: verification-needed -- You received this bug notification because you are a member of DX Packages, which is subscribed to nux in Ubuntu. Matching subscriptions: dx-packages https://bugs.launchpad.net/bugs/1337244 Title: compiz crashed with SIGSEGV in nux::WindowThread::ComputeQueuedLayout() Status in Nux: In Progress Status in Nux trusty series: In Progress Status in “nux” package in Ubuntu: In Progress Status in “nux” source package in Trusty: Fix Committed Bug description: [Impact] Unity crashes when unlocking the session [Test case] 1. Lock the session 2. Unlock the session 3. No crash should happen [Regression potential] None Hi, this is basically the same bug as https://bugs.launchpad.net/ubuntu/+source/unity/+bug/1298202, but that bug is marked as Fix Released with Unity 7.2.0, and I'm still seeing this bug on trusty, with the latest Unity version (unity 7.2.1+14.04.20140513-0ubuntu2). I already mentioned in that bug that I was still seeing it quite a while ago, but got no reply to that. Crashes are being experienced in multiple machines, while unlocking the screen. The stacktraces vary, but they always fail in the same function and same line. First stacktrace: #0 0x0000000000000410 in ?? () #1 0x00007fd4bf4eb75d in nux::WindowThread::ComputeQueuedLayout (this=this@entry=0x22c1990) at ./WindowThread.cpp:318 #2 0x00007fd4bf4ecb28 in nux::WindowThread::RenderInterfaceFromForeignCmd (this=0x22c1990, clip=...) at ./WindowThread.cpp:1627 #3 0x00007fd4c0c20389 in unity::UnityScreen::paintDisplay() () from /usr/lib/compiz/libunityshell.so #4 0x00007fd4c0c20748 in unity::UnityScreen::glPaintOutput(GLScreenPaintAttrib const&, GLMatrix const&, CompRegion const&, CompOutput*, unsigned int) () from /usr/lib/compiz/libunityshell.so #5 0x00007fd4d4f2e272 in GLScreen::glPaintOutput(GLScreenPaintAttrib const&, GLMatrix const&, CompRegion const&, CompOutput*, unsigned int) () from /usr/lib/compiz/libopengl.so #6 0x00007fd4d4f2eed4 in PrivateGLScreen::paintOutputs(std::list<CompOutput*, std::allocator<CompOutput*> >&, unsigned int, CompRegion const&) () from /usr/lib/compiz/libopengl.so #7 0x00007fd4d556944f in CompositeScreen::paint(std::list<CompOutput*, std::allocator<CompOutput*> >&, unsigned int) () from /usr/lib/compiz/libcomposite.so #8 0x00007fd4d556caf2 in CompositeScreen::handlePaintTimeout() () from /usr/lib/compiz/libcomposite.so #9 0x00007fd4e12c053d in CompTimer::triggerCallback() () from /usr/lib/libcompiz_core.so.ABI-20140123 #10 0x00007fd4e12c05ef in CompTimeoutSource::callback() () from /usr/lib/libcompiz_core.so.ABI-20140123 #11 0x00007fd4e12bfb4d in CompTimeoutSource::dispatch(sigc::slot_base*) () from /usr/lib/libcompiz_core.so.ABI-20140123 #12 0x00007fd4df7ac35f in Glib::Source::dispatch_vfunc(_GSource*, int (*)(void*), void*) () from /usr/lib/x86_64-linux-gnu/libglibmm-2.4.so.1 #13 0x00007fd4df29ece5 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 #14 0x00007fd4df29f048 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 #15 0x00007fd4df29f30a in g_main_loop_run () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 #16 0x00007fd4e127b0eb in compiz::private_screen::EventManager::startEventLoop(_XDisplay*) () from /usr/lib/libcompiz_core.so.ABI-20140123 #17 0x0000000000401971 in main () Second stacktrace (different machine): #0 0x00007f0058407ed0 in nux_area_accessible_check_pending_notification () from /usr/lib/compiz/libunityshell.so #1 0x00007f0056cb175d in nux::WindowThread::ComputeQueuedLayout (this=this@entry=0x1d530e0) at ./WindowThread.cpp:318 #2 0x00007f0056cb2b28 in nux::WindowThread::RenderInterfaceFromForeignCmd (this=0x1d530e0, clip=...) at ./WindowThread.cpp:1627 #3 0x00007f00583e6389 in unity::UnityScreen::paintDisplay() () from /usr/lib/compiz/libunityshell.so #4 0x00007f00583e6748 in unity::UnityScreen::glPaintOutput(GLScreenPaintAttrib const&, GLMatrix const&, CompRegion const&, CompOutput*, unsigned int) () from /usr/lib/compiz/libunityshell.so #5 0x00007f00705e2272 in GLScreen::glPaintOutput(GLScreenPaintAttrib const&, GLMatrix const&, CompRegion const&, CompOutput*, unsigned int) () from /usr/lib/compiz/libopengl.so #6 0x00007f00705e2ed4 in PrivateGLScreen::paintOutputs(std::list<CompOutput*, std::allocator<CompOutput*> >&, unsigned int, CompRegion const&) () from /usr/lib/compiz/libopengl.so #7 0x00007f0070c1d44f in CompositeScreen::paint(std::list<CompOutput*, std::allocator<CompOutput*> >&, unsigned int) () from /usr/lib/compiz/libcomposite.so #8 0x00007f0070c20af2 in CompositeScreen::handlePaintTimeout() () from /usr/lib/compiz/libcomposite.so #9 0x00007f007879b53d in CompTimer::triggerCallback() () from /usr/lib/libcompiz_core.so.ABI-20140123 #10 0x00007f007879b5ef in CompTimeoutSource::callback() () from /usr/lib/libcompiz_core.so.ABI-20140123 #11 0x00007f007879ab4d in CompTimeoutSource::dispatch(sigc::slot_base*) () from /usr/lib/libcompiz_core.so.ABI-20140123 #12 0x00007f0076c8735f in Glib::Source::dispatch_vfunc(_GSource*, int (*)(void*), void*) () from /usr/lib/x86_64-linux-gnu/libglibmm-2.4.so.1 #13 0x00007f0076779ce5 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 #14 0x00007f007677a048 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 #15 0x00007f007677a30a in g_main_loop_run () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 #16 0x00007f00787560eb in compiz::private_screen::EventManager::startEventLoop(_XDisplay*) () from /usr/lib/libcompiz_core.so.ABI-20140123 #17 0x0000000000401971 in main () I have more, but I don't know how useful it is to add them all. All stacktraces have this as #1: #1 0x00007fd4bf4eb75d in nux::WindowThread::ComputeQueuedLayout (this=this@entry=0x22c1990) at ./WindowThread.cpp:318 This is the affected code: void WindowThread::ComputeQueuedLayout() { StartLayoutCycle(); std::list<Area *>::iterator it; for (it = _queued_layout_list.begin(); it != _queued_layout_list.end(); ++it) { Area *area = *it; if (area->Type().IsDerivedFromType(View::StaticObjectType)) The last line is 318. I expect there is some item in the _queued_layout_list that is getting corrupted. 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