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Bug 146764 - gentoo-sources-2.6.17-r7 - only once CPU found on a Pentium IV HT
Summary: gentoo-sources-2.6.17-r7 - only once CPU found on a Pentium IV HT
Alias: None
Product: Gentoo Linux
Classification: Unclassified
Component: [OLD] Core system (show other bugs)
Hardware: x86 Linux
: High normal (vote)
Assignee: Gentoo Kernel Bug Wranglers and Kernel Maintainers
Depends on:
Reported: 2006-09-07 17:18 UTC by Christopher Head
Modified: 2008-04-19 07:42 UTC (History)
0 users

See Also:
Package list:
Runtime testing required: ---

Output of dmesg (dmesg.log,11.72 KB, text/plain)
2006-09-07 17:19 UTC, Christopher Head
Kernel config (.config,25.19 KB, text/plain)
2006-09-07 17:20 UTC, Christopher Head
Dmesg with both procs working (dmesg.log,12.82 KB, text/plain)
2006-09-17 12:21 UTC, Christopher Head

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Description Christopher Head 2006-09-07 17:18:56 UTC
I'm running gentoo-sources-2.6.17-r7 on a Pentium IV HT. Sometimes (quite often) at bootup, only CPU0 is started. Sometimes rebooting will solve the problem, sometimes not. The problem seems (subjectively) to be worse since installing -r7 than it was with -r4.
Comment 1 Christopher Head 2006-09-07 17:19:34 UTC
Created attachment 96354 [details]
Output of dmesg
Comment 2 Christopher Head 2006-09-07 17:20:04 UTC
Created attachment 96355 [details]
Kernel config
Comment 3 Daniel Drake (RETIRED) gentoo-dev 2006-09-16 20:24:01 UTC
Please post dmesg output from a boot where both CPU's are working
Comment 4 Christopher Head 2006-09-17 12:21:48 UTC
Created attachment 97272 [details]
Dmesg with both procs working

This a full dmesg log during a session with both processors working. I've added radeonfb to my kernel which wasn't in the other dmesg log (but this shouldn't matter). I haven't actually seen the problem again since adding radeonfb, but I've only booted a few times since then. I don't think there have been any other changes.
Comment 5 Daniel Drake (RETIRED) gentoo-dev 2006-10-23 17:12:02 UTC
Has this problem reappeared? You could try upgrading your BIOS to the latest version and booting with acpi=off
Comment 6 Daniel Drake (RETIRED) gentoo-dev 2006-10-23 17:13:38 UTC
Reproducing on the latest development kernel (currently 2.6.19-rc3) would also be wise
Comment 7 Christopher Head 2006-10-23 21:55:22 UTC
I've found a BIOS update. The problem hasn't appeared in a few boots, so it may be fixed now. I'll reopen the bug if it comes back. Thanks for your help and time.