How to reinitialize psm0 without reboot?

[Andrew Pantyukhin]

On 3/25/06, Lena at lena.kiev.ua <Lena at lena.kiev.ua> wrote:
> Hi,
>
> A hardware glitch of an (optical) PS/2 mouse can cause the mouse pointer
> to freeze. Subsequent "killall -HUP moused" gives:
>
> Mar 23 09:11:34 bedside kernel: psm0: failed to reset the aux device.
> Mar 23 09:11:34 bedside kernel: psm0: the aux device has gone! (reinitialize).
>
> or:
>
> Mar 23 10:48:27 bedside kernel: psm0: failed to disable the device (psmclose).
> Mar 23 10:48:28 bedside kernel: psm0: failed to get status (psmclose).
> Mar 23 10:48:28 bedside kernel: psm0: failed to enable the device (doopen).
> Mar 23 10:48:28 bedside moused: unable to open /dev/psm0: Input/output error
>
> and attempts to start moused again fail:
>
> Mar 23 09:13:04 bedside moused: unable to open /dev/psm0: Device not configured
>
> How to reinitialize/configure /dev/psm0 without reboot?
> 5.4-RELEASE-p3 with some security patches.
>
> Thanks,
>
> Lena
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PS/2 devices (keyboards and mice) are pretty dependent
on the BIOS subsystem. If they fail at runtime chances are
that a BIOS reinit (reboot) is the only way to bring them back.

I've used USB mice for years now - and you can just replug
one if anything goes wrong.