[Eug-lug] Random freezes

[Ben Barrett]

sysrq+++!  Don't miss this tip!  :)

    Ben


On 1/9/07, Devin <dlab00 at gmail.com> wrote:
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> 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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