On Sun, 2003-07-06 at 07:46, Peter Møller Neergaard wrote:
> I have now been running Mandrake 9.1 with the 2.4.21-0.18mdk kernel
> for about 3 weeks.  At this point it is starting to be annoying that
> this kernel locks up more often than even Micro$oft Windoze.
> The lock up will happen anything from 5 minutes to 10 hours of boot.
> It must be the kernel locking up since there is no response to the
> SysRq+Alt+... keys.
> This happens routinely, but irregular, so I have no idea how to track
> it.  I tried maximizing the information to syslog by choosing
>       *.*     /var/log/syslog
> in /etc/syslog.conf.  A typical entry looks like this:
>     Jul  6 14:42:18 pan spamd[5914]: identified spam (9.3/5.0) for turtle:501 in 0.4 
> seconds, 3321 bytes. 
>     Jul  6 14:45:00 pan CROND[5928]: (turtle) CMD (/usr/sbin/anacron -t 
> $HOME/bin/shell/cron/anacrontab) 
>     Jul  6 14:45:00 pan anacron[5929]: Anacron 2.3 started on 2003-07-06
>     Jul  6 14:45:00 pan anacron[5929]: Normal exit (0 jobs run)
>     Jul  6 14:47:12 pan syslogd 1.4.1: restart.
>     Jul  6 14:47:12 pan /etc/hotplug/net.agent: invoke ifplugd eth1
>     Jul  6 14:47:12 pan ifplugd[1526]: Using interface eth1/00:02:2D:40:D0:92
>     Jul  6 14:47:12 pan ifplugd[1526]: ETHTOOL_GLINK failed: Operation not supported
> which means that I have booted around 14:46:45.  Thus there does not
> appear to be any programs running just before the lock up.

no log messages definitely says kernel -- most other stuff has a chance
to squawk. However, 99.9999999% of the time the "other stuff" is X,
which logs into a different file :-) Another indicator is that a crashed
kernel will flash the keyboard lights.

> So at this point I would like suggestions:
> - how can I get more debug information from the kernel

There's some info on kernel.org and www.tldp.org about getting a serial
console onto a box to watch the kernel trap, but be aware that it's not
likely to mean a damn thing to anyone but a kernel developer.

> - should I change to a different kernel, e.g., vanilla 2.4.21.  Or
>   should I consider one of the patched ones.

You've probably got a hardware problem. I saw James suggest memtest86,
which is a good idea -- I'd also drop a Knoppix CD in or better yet boot
with a LEAF disk and see what happens after a few minutes. If it barfs
after running LEAF for ten minutes, it's either deeply incompatible with
Linux in general or it has bad hardware problems.

> Thanks
> /Peter
Jack Coates
Monkeynoodle: A Scientific Venture...

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