Red Hat Bugzilla – Bug 186074
Via Epia freezes after a few hours of operation
Last modified: 2007-11-30 17:07:24 EST
+++ This bug was initially created as a clone of Bug #145185 +++
Description of problem:
I had a fresh installation of FC3 on a Via EPIA 800 board (having a
Via C3 CPU). After a random amount of time (usually after about 10 to
100 minutes), the system would freeze without printing any error message.
Version-Release number of selected component (if applicable):
Steps to Reproduce:
1. Just wait. It will freeze after some time.
Actual Results: Total freeze (no kernel panic message). A hard reset
It actually easy (but not obvious) to fix this. If cpuspeed is shut
down (or if the cpuspeed service is deactivated with chkconfig) the
system runs fine.
See also discussion thread
-- Additional comment from firstname.lastname@example.org on 2005-01-14 23:08 EST --
*** This bug has been marked as a duplicate of 143424 ***
-- Additional comment from email@example.com on 2006-02-21 14:07 EST --
Changed to 'CLOSED' state since 'RESOLVED' has been deprecated.
+++ Clone end +++
It happen here on systems now after RHEL4U3 update:
# cat /proc/cpuinfo
processor : 0
vendor_id : CentaurHauls
cpu family : 6
model : 9
model name : VIA Nehemiah
stepping : 8
cpu MHz : 1002.482
cache size : 64 KB
fdiv_bug : no
hlt_bug : no
f00f_bug : no
coma_bug : no
fpu : yes
fpu_exception : yes
cpuid level : 1
wp : yes
flags : fpu vme de pse tsc msr cx8 mtrr pge cmov pat mmx fxsr sse rngn
bogomips : 2007.06
the longhaul module (CONFIG_X86_LONGHAUL) should never have been built for
RHEL4, as it's known broken, and requires a huge amount of effort to make it
I recommend disabling that in a future RHEL4 update.
In the meantime, you should be able to safely just rm -f the longhaul.ko file(s)
hmmm...we actually have this built in so you can't just remove the module :(
There is a 'dont_scale_voltage' module option, but i have no idea if this will
help...there is also a debug flag that can be set.
the option is worthless (the voltage scaling isn't present iirc) the whole
driver is unfixable without major kernel-wide changes to ensure no DMA happens
to any device around a speed-change transaction.
This appears to be a duplicate of Bug 172730
This request was evaluated by Red Hat Product Management for inclusion in a Red
Hat Enterprise Linux maintenance release. Product Management has requested
further review of this request by Red Hat Engineering, for potential
inclusion in a Red Hat Enterprise Linux Update release for currently deployed
products. This request is not yet committed for inclusion in an Update
QE ack for 4.5.
committed in stream U5 build 42.32. A test kernel with this patch is available
Longhaul support has been removed from the -52 kernel.
An advisory has been issued which should help the problem
described in this bug report. This report is therefore being
closed with a resolution of ERRATA. For more information
on the solution and/or where to find the updated files,
please follow the link below. You may reopen this bug report
if the solution does not work for you.