Re: Debugging help needed

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   That's usually a video card driver problem or problem with a
related driver (like AGP drivers).  If you run the server under
GDB you can get a backtrace and see where it's hung at.

			Mark.

On Wed, 18 Feb 2004, Anders Johansson wrote:

> Hi,
> 
> I have a problem with the X server that I'd like very much to track
> down, or help track down but I'm absolutely clueless how to debug it.
> Any help anyone can offer would be deeply appreciated.
> 
> Symptoms: at irregular intervals, the X server will spin up to 100% cpu
> usage. during this time, the system continues to function normally (I
> have a dual CPU system), I can ssh into it from another machine and it
> responds, but the GUI is completely frozen.
> 
> The server doesn't respond to SIGTERM, and SIGKILL freezes the entire
> system, including ssh logins. However, SIGSTOP will suspend it, and
> while suspended I can kill it with SIGKILL and restart it to get back to
> a normal working system. SIGCONT while suspended will send it back up to
> 100% CPU and remain unusable
> 
> The big problem with this is that while it happens fairly frequently,
> say once every other day or so, it's never at a predictable place, I
> can't pin down a sequence of events that locks it up. Race condition?
> 
> I've been running the default X server in suse 8.2 and 9.0 with this
> problem, and I recently installed 4.4 RC3 from xfree86.org in the hopes
> that it would solve it, but the problem remains.
> 
> I really want this problem solved, as it is a major pain to live with,
> but I need help with how to debug it. Can anyone help me?
> 
> Thanks in advance
> Anders
> 
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> 

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