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Old 01-19-2008, 05:29 PM   #1
oskar
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Registered: Feb 2006
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Troubleshooting lockups and kernel panics.


I got a pc from a friend. When he last used it, it would run for about 5 minutes and then either reboot by itself or produce a bluescreen (on winXP).

I installed Ubuntu. The first day I got two lockups, and I had to power it off. Now I'm using it for a week. The xserver crashed a couple of times (gdm restarted immediately), and I get kernel panics with programs that I had never had serious problems with before: VLC, Firefox, Skype. But it didn't lock up again.

I did a memcheck for 10 hours with about a dozen passes without errors, and ran stresscpu for about 8 hours. I killed it after 7500000 iterations and 90000 gflops without errors.
Is there anything else I can do to track down the problem?
It's an Athlon X2 3800+ with a pretty awesome motherboard... I would hate to dump it.

Last edited by oskar; 01-19-2008 at 05:33 PM.
 
Old 01-20-2008, 01:54 PM   #2
ilikejam
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Hi.

Could be a dodgy power supply, or maybe the video card fan's failed?

Dave
 
Old 01-20-2008, 02:07 PM   #3
oskar
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Could a kernel panic be indirectly caused by the power supply?

He had an nvidia 7600GT in there, but he sold it. I put in a 6600GT... So I guess it's not the graphics card.

... I just checked the fan - it's running and the heatsink is only slightly above room temperature on both the cpu and gpu.

Last edited by oskar; 01-20-2008 at 02:10 PM.
 
Old 01-20-2008, 02:13 PM   #4
ilikejam
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Yes, it could indeed. If one of the power rails sags below its normal voltage you can get all sorts of weird behaviour. Stress-testing the processor on its own might not be enough load to cause this, but high processor usage, and (for example) a drive spinning up might.

You might want to set up lm-sensors and watch the temps and voltages (gkrellm's good for this) to see if there's anything obviously amiss.

Dave
 
Old 01-20-2008, 06:10 PM   #5
ct_boy
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Try pulling the RAM out and stick it back in again anyway. If you have more than one stick, do the same but only put one back and if it still happens, try the other one.
 
Old 01-21-2008, 04:35 AM   #6
oskar
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Not a single component over 50C
I do have a spare power supply... The PC has been running steady ever since I posted this (maybe he's scared... I did threaten to dump him.). Once I get crashes again, I will change it...
 
  


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