[ubuntu-uk] Ubuntu Crashing

Seif Attar iam at seifattar.net
Wed Feb 6 15:05:45 GMT 2008

Hash: SHA1
Seif Attar wrote:
| Hello,
| Thanks for the email, somehow Michael's email slipped though my
| fingers! :S and your email made go back to look for his email!
| On Tue, 2008-02-05 at 21:57 +0000, Neil Greenwood wrote:
|> On 05/02/2008, Michael Holloway <michael at thedarkwinter.com> wrote:
|>> A log file that might help you diagnose is /var/log/messages - if there
|>> is anything interesting in there, post it here and we'll have a look.
|> Something that Michael didn't make clear, just in case you're new to
|> Linux, is that messages written to /var/log/messages survive past a
|> reboot, so you don't have to worry about losing anything when you have
|> to do the hard shutdown.
| I have looked in /var/log/messages, couldn't find anything there,
| anyways, it didn't crash today, maybe because I was home all day and was
| using it all the time (or the kernel headers update?). It'll probably be
| crashed by tomorrow morning, and i'll messages again.
|> Another reference that might help is this forum page
|> http://ubuntuforums.org/showthread.php?t=617349
|> It describes some key presses you can use to save information to the
|> disk before doing the hard shutdown/reboot - it helps to stop you
|> needing to fsck (i.e. check the disk) when you next boot.
|> One final thing to try: when the machine 'locks up', try swapping to a
|> virtual terminal (Ctrl+Alt+F1), logging in and typing 'dmesg'. If the
|> machine isn't totally dead, that might give you some info that would
|> help debug the problem.
| thanks for that, I can't really check this right now, as we are watching
| a movie on mythtv (nice) and i dont want to crash it! so I'll check this
| later, but I highly doubt that it will work, as not even the num lock or
| caps lock buttons work.
| It could be a power problem as Michael suggested, I havent disabled
| anything in the bios, will try that on next crash. One thing worth
| mentioning is that I do notice weird behaviour with my external hard
| drive, if i restart the computer, it is mounted normally (/home in fstab
| using uuid, XFS), but if i shutdown let the drives power off, and then
| power on again, it fails to mount. and i have to manually change tty and
| mount it, but since I wasn't planning on powering the machine off often,
| this didn't bother me, but maybe it's realted to the hanging? could it
| be that ubuntu puts hard drivers to sleep and doesn't get them back on?
| maybe, anyways, i'll keep you up to date as soon as i get anything.
| thanx for the help.
Ok, morning came and that machine hadn't crashed, so I started the 
unison sync again to force the machine to crash, and something happened 
while I had an ssh session open, the server didn't crash as it usually 
does (without any errors), this time it returned an I/O error to unison 
and then it crashed, but somehow my ssh session was still going! :) find 
attached the output from dmesg, it says the XFS partition is corrupt, I 
am not sure if that is what is causing the crash, or did all those 
crashes cause the corruption? I am copying all my files over to a secure 
place, and will try to repair the partition (xfs_repair sdb1).

thanx again!
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