kernel: psmintr: out of sync
Christoph Sold
cs at cheasy.de
Thu Oct 2 02:18:00 PDT 2003
Alex Wilkinson wrote:
> Hi all,
>
> I am switching between several OS's with a Cybex KVW switch.
> I now seem to have a problem with my mouse (after build world/kernel).
> FreeBSD 5.1-CURRENT #2: Wed Aug 20 13:28:54 CST 2003
>
> I am getting these messages on the console when I move my mouse, the cursor moves in a very
> choppy motion (painfully slow).
>
> Oct 1 09:46:17 squirm kernel: psmintr: out of sync (0000 != 0008).
> Oct 1 09:46:17 squirm kernel: psmintr: discard a byte (1).
> Oct 1 09:46:17 squirm kernel: psmintr: out of sync (0000 != 0008).
> Oct 1 09:46:17 squirm kernel: psmintr: discard a byte (2).
> Oct 1 09:46:18 squirm kernel: psmintr: out of sync (0000 != 0008).
> Oct 1 09:46:18 squirm kernel: psmintr: discard a byte (3).
> Oct 1 09:46:18 squirm kernel: psmintr: out of sync (0000 != 0008).
> Oct 1 09:46:18 squirm kernel: psmintr: re-enable the mouse.
> Oct 1 09:46:18 squirm kernel: psm: DISABLE_DEV return code:00fa
> Oct 1 09:46:18 squirm kernel: psm: ENABLE_DEV return code:00fa
> Oct 1 09:46:20 squirm kernel: psmintr: out of sync (0000 != 0008).
>
[snip]
Switching the KVM while the mouse is sending data can cause this
behaviour. Better KVMs interpret the data sent by the mouse and delay
switches until a complete mouse output has been sent to the computer.
HTH
-Christoph Sold
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