** Changed in: mesa (Ubuntu)
Status: Incomplete => Invalid
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https://bugs.launchpad.net/bugs/763461
Title:
[natty intel 945gme kde] Xorg crashes when exiting fullscreen with KDE
set to suspend effects for fullscreen windows
Status in mesa package in Ubuntu:
Invalid
Bug description:
Kubuntu natty, packages up-to-date as of 2011-04-17. No ppas added, so
mesa packages are version 7.10.2-0ubuntu1, xorg-server packages are
version 1.10.0.902-1ubuntu1, -video-intel is version 2.14.0-4ubuntu7
and KDE packages are version 4.6.2-0ubuntu1. Please reassign bug if
the bug is not in mesa.
When exiting a fullscreen window (eg Flash, fullscreen games) with
KDE's desktop effects set to suspend effects when any such are
fullscreened, Xorg crashes. Reproducible everytime and stops happening
if that option is disabled in the Advanced tab of the Desktop Effects
kcm module, perhaps to the detriment of performance.
Backtrace:
0: /usr/bin/X (xorg_backtrace+0x3b) [0x80a531b]
1: /usr/bin/X (0x8048000+0x60808) [0x80a8808]
2: (vdso) (__kernel_rt_sigreturn+0x0) [0xbbf40c]
3: /usr/lib/dri/i915_dri.so (intelClearWithBlit+0x162) [0x41b742]
4: /usr/lib/dri/i915_dri.so (0x3fc000+0x18670) [0x414670]
5: /usr/lib/dri/libdricore.so (_mesa_Clear+0x172) [0x1015512]
6: /usr/lib/xorg/modules/extensions/libglx.so (0x35d000+0x7fd9) [0x364fd9]
7: /usr/lib/xorg/modules/extensions/libglx.so (0x35d000+0x351b0) [0x3921b0]
8: /usr/lib/xorg/modules/extensions/libglx.so (0x35d000+0x3813f) [0x39513f]
9: /usr/bin/X (0x8048000+0x282c7) [0x80702c7]
10: /usr/bin/X (0x8048000+0x1a81c) [0x806281c]
11: /lib/i386-linux-gnu/libc.so.6 (__libc_start_main+0xe7) [0x1b8e37]
12: /usr/bin/X (0x8048000+0x1a411) [0x8062411]
Segmentation fault at address 0x30
Even with -dbg packages installed I could not get a better backtrace.
How to reproduce:
1. Enable KDE's desktop effects if not already enabled
2. Go to System Settings -> Desktop Effects, Advanced tab and check Suspend
desktop effects for fullscreen windows
3. Open a browser (Chromium in this case)
4. Navigate to a youtube clip
5. Play and hit fullscreen
6. Exit fullscreen
7. Observe complete Xorg crash
As Xorg crashes you're returned to the kdm login screen - however a
"broken" kded remains in memory, which prevents new wireless
connections being established. It won't exit by itself, it won't exit
when sent SIGTERM, has to be sent SIGKILL. That is perhaps a different
bug, but worthy of mention to emphasize bug importance. The user has
to reboot to be able to use Xorg again with a wireless connection,
alternatively switch to a tty and kill the kded process before logging
in again.
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