Found the offending assertion in mesa:
http://bazaar.launchpad.net/~ubuntu-branches/ubuntu/natty/mesa/natty-updates/view/head:/src/mesa/main/mipmap.c
** Package changed: compiz (Ubuntu) = mesa
** Also affects: mesa (Ubuntu)
Importance: Undecided
Status: New
** Changed in: mesa
Happens to me as well from time to time.
How can I send useful log?
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Title:
Alt-tab causes compiz assert failure: compiz:
There have been many changes in Ubuntu since that time you reported the
bug and your problem may have been fixed with some of the updates. It
would help us a lot if you could test it on a currently supported Ubuntu
version. When you test it and it is still an issue, kindly upload the
updated logs
I haven't seen this recently either.
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Title:
Alt-tab causes compiz assert failure: compiz: main/mipmap.c:43:
bytes_per_pixel:
Please report a new bug for that.
On 27/03/2011 8:56 PM, Fabrizio Narni 684...@bugs.launchpad.net wrote:
Here compiz/unity crashes by pressing just Alt, now and then.
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compiz still crashes with alt-tab even with mesa 7.10
$ glxinfo | grep version | grep Mesa
OpenGL version string: 2.1 Mesa 7.10
from dmesg:
[ 67.995123] show_signal_msg: 6 callbacks suppressed
[ 67.995132] compiz[1492]: segfault at 0 ip 7f1540ed60ab sp
7fffec9bcec0 error 4 in
** Tags added: compiz-0.9
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Title:
Alt-tab causes compiz assert failure: compiz: main/mipmap.c:43:
bytes_per_pixel: Assertion `b
All duplicates so far are on various models of an ATI Radeon graphics
controller.
** Tags added: hw-specific
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Title:
Alt-tab
I believe that this particular bug is fixed in mesa 7.10, which is in
the xorg-edgers PPA. Unfortunately, it exposes a new bug in the radeon
mesa driver (FDO bug: https://bugs.freedesktop.org/show_bug.cgi?id=32246
) which is as-yet unfixed.
** Changed in: compiz (Ubuntu)
Status: New =
i have had this twice in a natty livecd session. i have 5GB of RAM
ubu...@ubuntu:~$ free -m
total used free sharedbuffers cached
Mem: 4973 3077 1895 0215 1618
-/+ buffers/cache: 1243 3729
Swap:
** Summary changed:
- compiz assert failure: compiz: main/mipmap.c:43: bytes_per_pixel: Assertion
`b = 0' failed.
+ Alt-tab causes compiz assert failure: compiz: main/mipmap.c:43:
bytes_per_pixel: Assertion `b = 0' failed.
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Martin: maybe it's too much RAM, try taking some out ;-)
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Title:
Alt-tab causes compiz assert failure: compiz: main/mipmap.c:43:
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