Red Hat Bugzilla – Bug 115656
Misdetection of PS/2 hangs entire system
Last modified: 2007-11-30 17:10:36 EST
Description of problem:
ASUS dual athlon SMP box. No PS/2 mouse. The kernel detects a PS/2
mouse and attempts to enable it. This jams IRQ 12 which the box then
disables. Unfortunately IRQ12 is actually assigned to the scsi
controller so the machine then drops dead.
Version-Release number of selected component (if applicable):
Steps to Reproduce:
1. Install on ASUS A7M 266D
Hang (both SMP and non SMP)
Working system as with all previous releases.
The boot kernel works for some reason, although it too sees phantom
PS/2 mice. The phantom ports seem to be a 2.6 kernel bug as 2.4 gets
the detection right.
acpi=off does not help (it simply produces irq routing table errors
apm=off acpi=off pci=noacpi also doesnt help
The ps/2 specific issue seems to be ok now