[plug] Random crashes

Lucas van Staden lvs at dedmeet.com
Mon Oct 20 15:38:33 WST 2008

Lucas van Staden wrote:
> Hi,
> Just had similar issues, also with an Ubuntu based install. Crashes 
> also seemed very random, but only when I was busy with something.
> When my machine crashed, the lights on the keyboard flashed (kernel 
> panic?), and  only a  hard reset could recover the machine.
> Some googling revealed  the issue was related to issues within 
> ubuntu's 2.6.24-16-generic kernel, mostly in direct relation to GPU 
> drivers.  I am running a Nvida 9600GT based card.
> The solution was to upgrade the kernel past 2.6.24-18-generic, I 
> installed 2.6.24-19-generic
> Possible you also running the 2.6.24-16-generic kernel? Worth an 
> upgrade before you start replacing hardware.
> -Lucas
Hi, (sorry if I am hi-jacking this thread, but the information presented 
here may be of some use)

Please ignore everything I had mentioned above, as fate will have it, 
just after that post I had my first crash again.

I had found that the crash occurs every time I try and checkout some 
large projects using subversion.
I can get the crash to happen now when I want it. (tested a few checkout 
Doing a checkout in console mode only:

This allowed me to see the  kernel panic message:

ieee80211_tx_status+0x12/0x120 [mac80211] SS:ESP 0068:f7c57e80
Kernel panic - not syncing: Fatal exception in interrupt

Who ha, network (wireless) related issue. Nothing close to my original 
suspect of the GPU.

Some more googling got me this bug report 
concerning debian hardy problems with rt61 wireless drivers.

The solution (see the posts in the link above) is to either go to kernel 
2.6.25, or to use the linux-backports-modules.
I installed (via aptitude) linux-backports-modules-hardy-rt, and I also 
had to get the rt61 firmware from 
http://ralinktech.com/ralink/Home/Support/Linux.html, and unzip it to 

I can now do the same subversion checkout without any crashes.

Hopefully this can help someone else using the rt drivers in hardy.


> Kai wrote:
>> Hi guys and girls,
>> I was home for holidays in July, built a machine a few days before I 
>> left, got it working with Ubuntu and it looked good but maybe the 
>> power supply is a bit variable with the wattage it supplies, not sure 
>> what the problem is but it'll run fine for a sporadic amount of time, 
>> sometimes minutes other times it'll go for a week or so...then crash.
>> I've checked /var/log/messages for hardware or daemons that have 
>> problems on start-up, can't see anything that looks to be causing the 
>> problem, what other log files would be a good place to look for 
>> finding hardware that's not responding so I can try to figure out 
>> where the problem is without being onsite?
>> This prolly sounds like a n00b question, I've been too busy with 
>> aviation studies in the last 1.5 years, haven't had much time to 
>> actually use many of my IT skills.
>> Cheers
>> Kai

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