#495244 xcompmgr: causes x applications to stop updating

Package:
xcompmgr
Source:
xcompmgr
Description:
X composition manager
Submitter:
Benjamin Seidenberg
Date:
2010-12-11 18:03:06 UTC
Severity:
important
#495244#5
Date:
2008-08-15 16:32:01 UTC
From:
To:
While using xcompmgr (with fluxbox), it periodically (every few hours
while watching video) locks up in such a way that various applications
fail to make updates to the screen. Video and games freeze, terminals
don't show anything typed, etc.

A focus change (which changes transparency level) will sometimes make a
window update once (a different video frame, text appears in a terminal
all at once, etc).

Restarting xcompmgr resolves this issue. (Killing it makes everything
update normally, rerunning it does not break things).

Benjamin
#495244#10
Date:
2008-08-15 16:59:55 UTC
From:
To:
It works well enough here (although with automatic compositing, I
haven't really tested anything else).
Would be nice if you could find out where it's stuck (use gdb from an
ssh connection).  This could as well be a bug in the x server.

Cheers,
Julien
#495244#15
Date:
2008-08-15 17:39:32 UTC
From:
To:
Julien Cristau wrote:

Fair enough. I used it for quite a while before problems developed, but
I don't know what changed (it was originally infrequent and took me a
while to realize it was xcompmgr).

FWIW, I use xcompgr -c.

Or just from the console. I'll try to remember to do this, it's just it
has to crash at a time when it's convenient for me to debug (not when
I'm doing work or late at night, etc).

Benjamin
#495244#20
Date:
2008-08-25 13:41:44 UTC
From:
To:
severity 495244 important
tag 495244 moreinfo
kthxbye
Hi Benjamin,

I seem unable to reproduce this, so I'll go ahead and downgrade the
severity.  It's possible this is a bug in the video driver or X server,
rather than xcompmgr.

Cheers,
Julien
#495244#29
Date:
2008-08-25 13:52:19 UTC
From:
To:
Julien Cristau wrote:

Fair enough. I'll try to get a gdb trace on it when I can, but right now
that computer is in a box in the garage while I am in the process of moving.

Is there a debug symbol package for xcompmgr?

Benjamin
#495244#34
Date:
2008-08-25 14:12:32 UTC
From:
To:
Nope, sorry.

Cheers,
Julien
#495244#39
Date:
2010-11-22 23:34:01 UTC
From:
To:
--- Please enter the report below this line. ---
I confirm this bug with chromium-browser and the workaround with  -S
option of xcompmgr.

(My graphic chip is reported as Intel Corporation Mobile GM965/GL960)

--- Package information. ---
Depends (Version) | Installed
===============================-+-=============
libc6 (>= 2.2.5) | 2.11.2-6+squeeze1
libx11-6 (>= 0) | 2:1.3.3-3
libxcomposite1 (>= 1:0.3-1) | 1:0.4.2-1
libxdamage1 (>= 1:1.1) | 1:1.1.3-1
libxfixes3 (>= 1:4.0.1) | 1:4.0.5-1
libxrender1 | 1:0.9.6-1
#495244#44
Date:
2010-12-11 17:36:57 UTC
From:
To:
After a while using the -S option, I can say it sometime works, but the
bug still occurs often.