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Old 04-28-09, 09:34 AM   #1
Skully
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Join Date: Mar 2009
Posts: 6
Default Xorg crash, 100% cpu usage

Since several weeks i sometimes (but still regulary) lose the video
signal to the monitor. Monitor goes dark and say that no video signal.
Keyboard input like restart X etc do not work.
Sometimes i am able to login via ssh from another pc. What i usually
see is a xorg process with 100% cpu usage which i cant kill, even with
kill -9.

I tried several drivers from 177 to latest 180.53.
Its for me hardly reproducable but it usually happens on graphic
intensive things like flash, games, opengl things.
Normal desktop work usually doesnt cause that but lately it happened
there as well.
Its a passive 9600 card but temperature is fine when i checked it,
during long play it may reach 90 degrees but that should be fine.
Also x can crash right after i turned on the pc when the temperature is
low.

Usually syslog didnt show much, only lines like:
NVRM: Xid (0001:00): 16, Head 00000001 Count 00000000
NVRM: Xid (0001:00): 16, Head 00000000 Count 00000001

but today i was able to get following line via dmesg.

Xorg[3238]: segfault at 96889000 ip b6abcf06 sp bf9bc940 error 6 in
nvidia_drv.so[b688d000+3b5000]

Any ideas how to solve that would be nice.
What does the segault error mean? Hardware defect maybe?
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Old 05-05-09, 08:29 AM   #2
Skully
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Posts: 6
Default Re: Xorg crash, 100% cpu usage

Some new data from syslog when crash happens:

May 5 13:35:03 debian kernel: NVRM: Xid (0001:00): 16, Head 00000001 Count 00000000
May 5 13:35:04 debian kernel: NVRM: Xid (0001:00): 8, Channel 0000007f
May 5 13:35:04 debian kernel: NVRM: Xid (0001:00): 6, PE007f
May 5 13:35:04 debian kernel: NVRM: Xid (0001:00): 7, Ch 0000007f M 00001ffc D ffffffff intr ffffffff
May 5 13:35:04 debian kernel: NVRM: Xid (0001:00): 26, Ch 0000007f M 00001ffc D ffffffff intr ffffffff
May 5 13:35:04 debian kernel: NVRM: Xid (0001:00): 4, Ch 0000007f acquireValue ffffffff dmaPut ffffffff dmaGet ffffffff
May 5 13:35:04 debian kernel: NVRM: Xid (0001:00): 4, Ch 0000007f SC 00000007 M 00001ffc Data ffffffff


Installed Ubuntu 9.04 on the same machine and getting crashes there as well.
Further i did prime95 (mprime), cpuburn and pifast tests and those pass without any errors.
Gonna swap the card the next few days but i guess its some kind of hardware error.
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Old 05-14-09, 03:14 PM   #3
yellowman
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Join Date: May 2008
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Default Re: Xorg crash, 100% cpu usage

Hi,

Im experiencing the same thing. Did you change the card? In that case, did it help?

Thanks!
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Old 05-14-09, 03:24 PM   #4
Skully
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Posts: 6
Default Re: Xorg crash, 100% cpu usage

It was an hardware error. The card was broken, tested the card on Windows and lost the video signal there as well (was even another pc).
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Old 05-15-09, 03:41 AM   #5
yellowman
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Posts: 3
Default Re: Xorg crash, 100% cpu usage

Ok, thanks for the info!
I have tried different live cds with the same result, guess its the card in my case aswell.
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