Bug 107422 - system locks up when writing to floppy (CPU_IDLE problem)
Summary: system locks up when writing to floppy (CPU_IDLE problem)
Keywords:
Status: CLOSED WONTFIX
Alias: None
Product: Red Hat Linux
Classification: Retired
Component: kernel
Version: 9
Hardware: i686
OS: Linux
medium
high
Target Milestone: ---
Assignee: Arjan van de Ven
QA Contact: Brian Brock
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2003-10-17 20:45 UTC by Andy Rysin
Modified: 2007-04-18 16:58 UTC (History)
2 users (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed: 2004-09-30 15:41:36 UTC
Embargoed:


Attachments (Terms of Use)

Description Andy Rysin 2003-10-17 20:45:56 UTC
From Bugzilla Helper:
User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.4) Gecko/20030624

Description of problem:
Kernels starting (at least) 2.4.20 turn CONFIG_APM_CPU_IDLE option on by default
which causes ASUS P4S533-X and P4S533-MX motherboards to hang when writing to
floppy. Actually the option help says that some machine may hang and probably it
should not be on by default. Luckily I was able to fix that adding
"apm=idle_threshold=100" to the kernel parameters without recompiling the kernel.
It seems like on ASUS P4533 motherboards this option is unsafe so it must be
turned off.
Other way to make somehow these motherboards/BIOS blacklisted.


Version-Release number of selected component (if applicable):
kernel-2.4.20-20.9

How reproducible:
Always

Steps to Reproduce:
1. load 2.4.20 kernel or later on ASUS P4S533-X or P4S533-MX
2. try to do e.g. mkdosfs /dev/fd0
3.
    

Actual Results:  system hangs completely with no messages

Expected Results:  writing should be finished

Additional info:

Comment 1 Gerald Teschl 2004-03-16 14:28:38 UTC
Same here. Happens with both redhat-9 (current errata) and fedora-1;-(


Comment 2 Bugzilla owner 2004-09-30 15:41:36 UTC
Thanks for the bug report. However, Red Hat no longer maintains this version of
the product. Please upgrade to the latest version and open a new bug if the problem
persists.

The Fedora Legacy project (http://fedoralegacy.org/) maintains some older releases, 
and if you believe this bug is interesting to them, please report the problem in
the bug tracker at: http://bugzilla.fedora.us/



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