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Old 07-03-2006, 02:49 PM   #1
SilverEagle
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Registered: Mar 2005
Location: Madrid, Spain
Distribution: Kubuntu Dapper
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Complete system freeze


Hi,

I installed Kubuntu Dapper (clean install) and now this is hell on earth. The system freezes randomly, sometimes after 1-2 hours using it and, sometimes, after 10-14 hours.

The first thing I did was to disable the advance power control in the Grub loader, but this didn't helped. The second was to disable the screen saver, again without success.

The worst part is that I don't know how to isolate this problem.

Do you know any way to log everything to know what was the last thing that the system did before crashing ? (Other approaches are welcomed !)

Thanks in advance,

- Juan
 
Old 07-03-2006, 03:24 PM   #2
mrosati
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Registered: Nov 2003
Location: Mestre - ITALY
Distribution: Debian sarge
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sometimes this could be caused by a wrong kernel installation. it is possible that your processor does not support optimizations for i686 (this is only an example) and freezes when some instructions are used.
what kernel are you using?

regards
Matteo
 
Old 07-04-2006, 02:24 PM   #3
SilverEagle
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Distribution: Kubuntu Dapper
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I'm using a P4 with a i686 kernel:

Linux version 2.6.15-23-686 (buildd@rothera) (gcc version 4.0.3 (Ubuntu 4.0.3-1ubuntu5)) #1 SMP PREEMPT Tue May 23 14:03:07 UTC 2006

I also tried the 2.6.15-25-686 without success.

This is strange, because I didn't change any hardware and I never had any issue with previous linux distributions for the last 3 years (including Kubuntu 5.10)

Last edited by SilverEagle; 07-05-2006 at 09:09 AM.
 
Old 07-04-2006, 02:58 PM   #4
mrosati
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you should try the i386 kernel. a friend had the same problem with his toshiba laptop, and changing from i686 to i386 he solved the problem.

But the problem can be an other: damaged ram. when lilo boots, try the memory test to check if all is ok with your ram. that can be an other cause for your system freeze
 
Old 07-05-2006, 03:35 AM   #5
SilverEagle
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Registered: Mar 2005
Location: Madrid, Spain
Distribution: Kubuntu Dapper
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If I don't find another way to fix this I will try that. It's a bit extreme to give up i686 support and go back to the i386. On the other hand, Dapper should be crashing computers everywhere if this were the problem...

Last edited by SilverEagle; 07-05-2006 at 09:09 AM.
 
Old 07-05-2006, 08:52 AM   #6
dickgregory
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Registered: Oct 2002
Location: Houston
Distribution: Arch, PCLinuxOS, Mint
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I have had similar issues with two separate computers. I tried installing a completely different distro and still had the problem. After trying Suse, Ubuntu, Debian, and Mandriva, I concluded that I had a hardware problem. None of the installers or boot processors detected a problem which is why it took me so long to find out that the memory was bad. I got a memory test program that test it much more thoroughly than the startup tests. It immediately showed bad memory at many memory addresses. I wondered how anything worked at all. Replacing the memory cleared up the problem. About 6 months later I had the same problem with a different computer and I tested it as a first instead of last resort and saved myself a lot of time.

I can't remember where I got the program, but google might help you find it or a similar one.
 
Old 07-05-2006, 01:12 PM   #7
SilverEagle
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Registered: Mar 2005
Location: Madrid, Spain
Distribution: Kubuntu Dapper
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I used memtest-86 to check the RAM. After 2 passes (1+ hour testing) it didn't find any errors (and I was hoping to find them just to solve this, even if I had to buy a new memory stick)

I'm going to leave that program testing the memory for the next 24 hours, but it seems that isn't the problem.
 
Old 07-07-2006, 05:54 AM   #8
SilverEagle
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Distribution: Kubuntu Dapper
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Done. 24 hours testing without errors.

Unfortunately this isn't going to be a memory issue...
 
Old 07-17-2006, 02:44 PM   #9
SilverEagle
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Registered: Mar 2005
Location: Madrid, Spain
Distribution: Kubuntu Dapper
Posts: 11

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Solved. The problem was with the USB wireless Adapter (ZyDAS 802.11b/g USB2 WiFi). To solve it follow the instructions here: https://help.ubuntu.com/community/Wi...r/zydas_zd1211

Instead of downloading the file http://zd1211.ath.cx/download/zd1211-driver-r52.tgz as stated in that page go to http://zd1211.ath.cx/download/ and download the most recent file. The one which worked for me (and the lastest at the time of this writing was zd1211-driver-r83.tgz)

Thank you all of you for your replies and help.
 
  


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