[Eug-lug] Random freezes

[Michael Miller]

What changes have you made in the last 72 hours?

-Miller

On 1/9/07, Devin <dlab00 at gmail.com> wrote:
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> Martin Kelly wrote:
> > Hey all,
> >
> > I have just had my computer freeze twice within 10 minutes or so.
> > Activities: xorg, XMMS, firefox, apache serving a 60MB or so download.
> > Both times, the freeze happened when the person downloading from me was
> > at 14%...
>
> Might be time to run badblocks ;)
>
> > I don't know if this is a coincidence or not. Note these were
> > complete frezes, not just xorg freezes... it was very strange.
>
> Mouse still move around? Applications that are already loaded into
> memory still somewhat functional? Do you see your disk light lit (stuck)
> or hear your disk making strange noise?
>
> > My question is if anybody knows what log files I might check to find the
> > cause of the freeze.
>
> All depends on your system configuration, if it exists, check
> /var/log/{kernel,syslog} for anomalies. Possibly upload that day's log
> for us to examine.
>
> > Also, do you think it has something to do with the
> > downloading?
>
> Specify what distro, kernel, and xorg versions you are running. Might
> also be buggy hardware (dead network card?) or driver so paste output of
> `lspci -v`
>
> Some kernels are configured with CONFIG_MAGIC_SYSRQ which allows you to
> take control of a bad situation:
>
> http://lxr.linux.no/source/Documentation/sysrq.txt
>
> Typically to recover just Xorg breaking (which tends to happen when
> running with current git sources), try hitting <SREQ>+k (SAK, kills off
> all processes listening on /dev/console) and <SREQ>+r (unraw, puts
> keyboard back into a 'normal' state), where <SREQ> is the SysRq sequence
> depending on how you're interacting with the computer (typically hold
> <Alt>, press and hold SysReq(/Print Screen), release <Alt> and press
> command key). Also helps when something in the kernel goes bad making
> the system unusable:
>
> <SREQ>+e (terminate all processes -- SIGTERM)
> <SREQ>+i (terminate all processes -- SIGKILL)
> <SREQ>+s (sync disks)
> <SREQ>+u (remount disks read-only)
> <SREQ>+b (reboot -- or <SREQ>+o for poweroff)
>
> > Thanks,
> > Martin
>
> Thanks,
>         - Devin
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