8.04.1 Server - atkbd.c Spurious ACK

[GumbyNoTalent]

messages.log



Jun 4 04:28:13 xxxxxxxxx -- MARK --
Jun 4 04:30:44 xxxxxxxxx kernel: [474959.951010] atkbd.c: Spurious ACK on isa0060/serio0. Some program might be trying access hardware directly.
Jun 4 04:43:31 xxxxxxxxx kernel: [475725.971203] atkbd.c: Spurious ACK on isa0060/serio0. Some program might be trying access hardware directly.
Jun 4 05:00:00 xxxxxxxxx kernel: [476713.876115] atkbd.c: Spurious ACK on isa0060/serio0. Some program might be trying access hardware directly.
Jun 4 05:12:51 xxxxxxxxx kernel: [477484.354637] atkbd.c: Spurious ACK on isa0060/serio0. Some program might be trying access hardware directly.

The system is a IBM x3250, Xeon 2.0Ghz, 4GB memory, 2xSATA 160GB Raid 1, the system is in a rack and connected to a HP 4 port KVM PS2 mouse and keyboard and VGA.

OS is Ubuntu 8.04.1 Server plain with SSH server nothing else and is up to date (2.6.24-19-server).

Any ideas?

EDIT :: Additional Information

I detached the KVM for 2 hours and in that time there are no messages, so the KVN was sending a signal that caused the messages ?

[GumbyNoTalent]

http://lxr.linux.no/linux+v2.6.29/drivers/input/keyboard/atkbd.c#L417


case ATKBD_RET_NAK:
if (printk_ratelimit())
printk(KERN_WARNING "atkbd.c: Spurious %s on %s. "
"Some program might be trying access hardware directly.\n",
data == ATKBD_RET_ACK ? "ACK" : "NAK", serio->phys);
goto out;


so it is a valid message caused by the KVM...

Thanks to Crinos @ OCAU Forums for the answer.