Bug 115656 - Misdetection of PS/2 hangs entire system
Misdetection of PS/2 hangs entire system
Product: Fedora
Classification: Fedora
Component: kernel (Show other bugs)
All Linux
medium Severity high
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Assigned To: Arjan van de Ven
Brian Brock
Depends On:
Blocks: FC2Blocker
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Reported: 2004-02-14 09:22 EST by Alan Cox
Modified: 2007-11-30 17:10 EST (History)
0 users

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Fixed In Version:
Doc Type: Bug Fix
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Clone Of:
Last Closed: 2004-04-21 13:11:44 EDT
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RHEL 7.3 requirements from Atomic Host:
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Description Alan Cox 2004-02-14 09:22:50 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):

FC2 test1

How reproducible:

Steps to Reproduce:
1. Install on ASUS A7M 266D
2. Reboot
3. Observe
Actual results:

Hang (both SMP and non SMP)

Expected results:

Working system as with all previous releases.

Additional info:
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
then hangs)
apm=off acpi=off pci=noacpi also doesnt help
Comment 1 Alan Cox 2004-04-21 13:11:44 EDT
The ps/2 specific issue seems to be ok now

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