Bug 58369 - [noathlon] kernel-2.4.9 Athlon rpm Panics on reboot on Athlon
Summary: [noathlon] kernel-2.4.9 Athlon rpm Panics on reboot on Athlon
Status: CLOSED DUPLICATE of bug 55040
Alias: None
Product: Red Hat Linux
Classification: Retired
Component: kernel   
(Show other bugs)
Version: 7.2
Hardware: i386
OS: Linux
Target Milestone: ---
Assignee: Arjan van de Ven
QA Contact: Brian Brock
Depends On:
TreeView+ depends on / blocked
Reported: 2002-01-15 11:48 UTC by Need Real Name
Modified: 2005-10-31 22:00 UTC (History)
0 users

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of:
Last Closed: 2002-01-15 13:02:32 UTC
Type: ---
Regression: ---
Mount Type: ---
Documentation: ---
Verified Versions:
Category: ---
oVirt Team: ---
RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: ---

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Description Need Real Name 2002-01-15 11:48:47 UTC
Description of Problem:
Upon upgrade from 2.4.7 to Kernel 2.4.9 on a MSI 6378 Board Athlon Celeron 900
the kernel panics on reboot. 
Its a VIA Chipset.

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

How Reproducible:
install on athlon system and boot.

Additional Information:

this also happens on self-compiled original linux kernels from 2.4.9 on to 2.4.17.
It is a known issue of too optimistic athlon optimizations. 

2.4.7 kernel output:
Jan 10 13:51:13 runes kernel:  *** Motherboard with possibly underspec'ed
Jan 10 13:51:13 runes kernel:  *** voltage regulator or broken VIA chipset bios
Jan 10 13:51:13 runes kernel:  *** Athlon optimisations disabled.

The kernel 2.4.7 complained on boot about overoptimistic VIA Chipset settings or
underspec voltage regulator and disabled athlon optimizations.

Therefore I tried building / Installing i686 kernels instead of athlon kernels.

This works stable. The system now runs a i686 compiled 2.4.17 for a while
without incident.

Suggest: If detecting VIA chipset with these issues, do not install athlon
optimized kernels

Comment 1 Arjan van de Ven 2002-01-15 13:02:27 UTC
Even better idea: recently the cause was found and it turns out that some bioses
leave the chipset in debugging mode. Our next kernel will turn off that
debugging mode and all will be well. In the mean time, passing "noathlon" on the
kernel commandline will disable athlon code as well...

Comment 2 Arjan van de Ven 2002-01-18 18:40:10 UTC

*** This bug has been marked as a duplicate of 55040 ***

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