running the atom editor and pressing alt-tab causes compiz to freeze and crash

[Gonçalo Gomes]

Running the atom editor (www.atom.io) on ubuntu 14.04 with gnome-panel + compiz leads to compiz crash when pressing alt-tab to switch to a different window.

Reproduces every time.

1) The release of Ubuntu you are using, via 'lsb_release -rd' or System -> About Ubuntu

Description: Ubuntu 14.04.5 LTS
Release: 14.04

2) The version of the package you are using, via 'apt-cache policy pkgname' or by checking in Software Center
compiz:

  Installed: 1:0.9.11.3+14.04.20160425-0ubuntu1
  Candidate: 1:0.9.11.3+14.04.20160425-0ubuntu1
  Version table:
 *** 1:0.9.11.3+14.04.20160425-0ubuntu1 0
        500 http://ie.archive.ubuntu.com/ubuntu/ trusty-updates/main amd64 Packages
        100 /var/lib/dpkg/status
     1:0.9.11+14.04.20140409-0ubuntu1 0
        500 http://ie.archive.ubuntu.com/ubuntu/ trusty/main amd64 Packages

3) What you expected to happen

I expected ctrl-tab to switch me to a different window.

4) What happened instead

The environment freezes, despite mouse still moving. No application or item in the windowing system responds and ultimately compiz crashes (~5 seconds later), leading up to black screen followed by a default graphical login prompt.

This bug is fully reproducible in my environment and I'm eager to help debug it.

[Gonçalo Gomes (gagomes)]

The same sort of behaviour has been experienced, although not as easily reproducible, when using firefox with multiple open windows spread across different workspaces.

[Gonçalo Gomes (gagomes)]

I managed to reproduce this under the debugger, however it took several tries for it to reproduce, suggesting this may be a possible race condition.

Furthermore, I have noticed the bug shows itself in the form of either

(1) mouse moves, but no screen updates. A crash ensues within 5-10 seconds
(2) no mouse moves or screen updates. No crash, compiz remains using 100% of cpu (1 core) on the faulting thread.

I gathered some output from gdb and top:

#0 syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1 0x00007f59cab22d25 in ?? () from /usr/lib/nvidia-352/libGL.so.1
#2 0x00007f59cab22a23 in ?? () from /usr/lib/nvidia-352/libGL.so.1
#3 0x00007f59c2d300b3 in ?? () from /usr/lib/nvidia-352/libnvidia-glcore.so.352.63
#4 0x00007f59c2c97b1d in ?? () from /usr/lib/nvidia-352/libnvidia-glcore.so.352.63
#5 0x00007f59c2c98e17 in ?? () from /usr/lib/nvidia-352/libnvidia-glcore.so.352.63
#6 0x00007f59c2c1c5b5 in ?? () from /usr/lib/nvidia-352/libnvidia-glcore.so.352.63
#7 0x00007f59caaf54fe in glXDestroyPixmap () from /usr/lib/nvidia-352/libGL.so.1
#8 0x00007f59cade58b0 in TfpTexture::~TfpTexture() () from /usr/lib/compiz/libopengl.so
#9 0x00007f59cade5919 in TfpTexture::~TfpTexture() () from /usr/lib/compiz/libopengl.so
#10 0x00007f59cade4dcd in GLTexture::List::~List() () from /usr/lib/compiz/libopengl.so
#11 0x00007f59c92fcf49 in DecorTexture::~DecorTexture() () from /usr/lib/compiz/libdecor.so
#12 0x00007f59c92fd010 in DecorScreen::releaseTexture(DecorTexture*) () from /usr/lib/compiz/libdecor.so
#13 0x00007f59c9303f9a in Decoration::~Decoration() () from /usr/lib/compiz/libdecor.so
#14 0x00007f59c9304059 in Decoration::~Decoration() () from /usr/lib/compiz/libdecor.so
#15 0x00007f59c9300b2a in DecorWindow::update(bool) () from /usr/lib/compiz/libdecor.so
#16 0x00007f59c930534b in DecorScreen::handleEvent(_XEvent*) () from /usr/lib/compiz/libdecor.so
#17 0x00007f59d712773f in CompScreen::handleEvent(_XEvent*) () from /usr/lib/libcompiz_core.so.ABI-20140123
#18 0x00007f59d712773f in CompScreen::handleEvent(_XEvent*) () from /usr/lib/libcompiz_core.so.ABI-20140123
#19 0x00007f59c0a85d90 in ResizeLogic::handleEvent(_XEvent*) () from /usr/lib/compiz/libresize.so
#20 0x00007f59d712773f in CompScreen::handleEvent(_XEvent*) () from /usr/lib/libcompiz_core.so.ABI-20140123
#21 0x00007f59d712773f in CompScreen::handleEvent(_XEvent*) () from /usr/lib/libcompiz_core.so.ABI-20140123
#22 0x00007f59c0650591 in RegexScreen::handleEvent(_XEvent*) () from /usr/lib/compiz/libregex.so
#23 0x00007f59d712773f in CompScreen::handleEvent(_XEvent*) () from /usr/lib/libcompiz_core.so.ABI-20140123
#24 0x00007f59c043dbad in PlaceScreen::handleEvent(_XEvent*) () from /usr/lib/compiz/libplace.so
#25 0x00007f59d712773f in CompScreen::handleEvent(_XEvent*) () from /usr/lib/libcompiz_core.so.ABI-20140123
#26 0x00007f59d712773f in CompScreen::handleEvent(_XEvent*) () from /usr/lib/libcompiz_core.so.ABI-20140123
#27 0x00007f59bbbe37ee in MoveScreen::handleEvent(_XEvent*) () from /usr/lib/compiz/libmove.so
#28 0x00007f59d712773f in CompScreen::handleEvent(_XEvent*) () from /usr/lib/libcompiz_core.so.ABI-20140123
#29 0x00007f59d712773f in CompScreen::handleEvent(_X...

[Gonçalo Gomes (gagomes)]

The only information from perf I found was just this line, which I believe I copied from the `perf top` but not particularly convinced this will be of much help, but hopefully it may be useful in correlating any existing

14.00% libnvidia-glcore.so.352.63 [.] 0x0000000001822cc6 ◈ 11.03% libc-2.19.so [.] syscall ▒

[Sebastien Bacher (seb128)]

Gonçalo, your issue seems to be with the nvidia binary drivers, does it work better if you use "nouveau" instead?

[Launchpad Janitor (janitor)]

[Expired for compiz (Ubuntu) because there has been no activity for 60 days.]