Bug 188072

Summary: kwin outputs errors and DAMAGES and ksmserver crashes
Product: [Plasma] kwin Reporter: Romain <romainmadala>
Component: generalAssignee: KWin default assignee <kwin-bugs-null>
Status: RESOLVED UPSTREAM    
Severity: normal CC: romainmadala
Priority: NOR    
Version First Reported In: unspecified   
Target Milestone: ---   
Platform: Ubuntu   
OS: Linux   
Latest Commit: Version Fixed/Implemented In:
Sentry Crash Report:

Description Romain 2009-03-25 12:42:20 UTC 
Version:            (using KDE 4.2.1)
OS:                Linux
Installed from:    Ubuntu Packages

well I may experience sometimes a screen freeze [black screen with a working-like system] and can't do anything to remedy that except hard reboot.

Sometimes, Xserver crashes but I'm sent back to the login page and I can login, so hard reboot not necesary.

Now I'm trying to remedy that bug.
Which could come from ksmserver, Plasma, Qtcore or ACPI.

now when I try in konsole
~$:kwin --replace       it outputs like in .xsession-error
"kwin: X Error (error: <unknown>[DAMAGE+0], request: XDamageDestroy[DAMAGE+2], resource: 0x2800c23)
kwin: X Error (error: <unknown>[DAMAGE+0], request: XDamageDestroy[DAMAGE+2], resource: 0x2800c40)"

This output may happen without crash of my xsession

About ksmserver, kern.log indicates at the time xsession crash
kernel: [22906.313145] ksmserver[3197]: segfault at 8 ip b6756ad2 sp b3732750 error 4 in libQtCore.so.4.5.0[b66c0000+238000]

else .xsession-error indicates as well
plasma(4966) WirelessInterfaceItem::setConnectionInfo: FIXME: tjkActive connections is empty while connected?

got some strange "QCoreApplication::postEvent: Unexpected null receiver
" in my .xsession-error

a file "_usr_bin_ksmserver.1000.crash"
in my /var/crash/ directory matching with the time of crash

I would be glad to provide any more information someone may need to help !
Comment 1 Martin Flöser 2009-03-25 12:51:36 UTC 
What's your graphics card vendor and driver?
Comment 2 Romain 2009-03-25 13:24:54 UTC 
01:00.0 VGA compatible controller [0300]: ATI Technologies Inc M22 [Mobility Radeon X300] [1002:5460]

:~$ lspci -vvnn | grep radeon
        Kernel modules: radeonfb

lsmod | grep radeon
radeon                342432  2
drm                    96424  3 radeon

apt-cache policy xserver-xorg-video-ati
xserver-xorg-video-ati:
  Installed: 1:6.12.1-0ubuntu1
  Candidate: 1:6.12.1-0ubuntu1
  Version table:
 *** 1:6.12.1-0ubuntu1 0
        500 http://fr.archive.ubuntu.com jaunty/main Packages
        100 /var/lib/dpkg/status
Comment 3 Romain 2009-03-26 15:38:09 UTC 
Well, I disabled yesterday dektop effects. It seems that kwin is definitely the origin of my troubles as the xserver does not crash anymore.

Someone could tell me what I should Check so as to resolve this and get back the desktop effects without any xserver failure?
Comment 4 Martin Flöser 2009-03-26 17:18:33 UTC 
I have heard of some people having problems with Ati drivers and Jaunty. Perhaps your problem is related to the fact that you are using unstable software?

In any case I think it would be better to report this problem to Ubuntu developers as - I think - you did not experience the X crashes with stable Ubuntu release.
Comment 5 Martin Flöser 2009-04-27 17:27:17 UTC 
kwin is not the source of your problems. It's the graphics driver which can be seen by the fact that your X server crashes (if X crashes it's X that has a problem). Performance problems related to ATI driver are named in the Kubuntu release note with some hints how to get rid of them: http://www.kubuntu.org/news/9.04-release