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Date: Sat, 15 Dec 2007 19:02:27 +0100
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To: Paul Schmehl <pauls@utdallas.edu>
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Cc: FreeBSD Questions <freebsd-questions@freebsd.org>
Subject: Re: drm locking up the desktop?
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Paul Schmehl schrieb:
> I recently upgraded to 6.2 release (i386) on my desktop workstation, 
> and I'm experiencing occasional lockups that require restarting X to 
> resolve. I can ssh in to the box and kill the process and force a 
> restart, but the desktop is completely unusable - both mouse and 
> keyboard don't function - so I can't restart X with Ctrl-Alt-Bkspc.  
> When I ssh in, performance is normal and top doesn't show any unusual 
> memory or CPU usage.  PID974 was the pid for X.
>
> I found these errors in /var/log/messages:
> Dec 12 09:36:51 utd59514 kernel: error: [drm:pid974:drm_lock_take] 
> *ERROR* 1 holds heavyweight lock
> Dec 12 09:36:51 utd59514 kernel: error: [drm:pid974:drm_lock_take] 
> *ERROR* 1 holds heavyweight lock
>
> Although these showed up on the 12th, the desktop just locked up a few 
> minutes ago, so they *may* be unrelated.  I tried unloading drm 
> (kldunload drm.ko), but that failed.
>
> When I grep the Xorg log I see these errors:
> root@utd59514# grep EE /var/log/Xorg.0.log
>        (WW) warning, (EE) error, (NI) not implemented, (??) unknown.
> (II) Loading extension MIT-SCREEN-SAVER
> (EE) RADEON(0): Unable to write to DVO Slave 112.
> (EE) RADEON(0): Unable to write to DVO Slave 112.
> (EE) RADEON(0): Unable to write to DVO Slave 112.
>
> I don't know if these are related to the problem either.  I'm 
> wondering 1) has anybody else experienced this problem and 2) does 
> anyone have any suggestions as to where to start looking for the answer?
>
As far as I remember you can disable drm in your xorg.conf...
I do not have it there, so I could not look it up...