powernow-k8 doesn't like Semprons

Bug #35145 reported by Kai F. Lahmann
8
Affects Status Importance Assigned to Milestone
linux-source-2.6.15 (Ubuntu)
Fix Released
Medium
Unassigned

Bug Description

powernow-k8 doesn't load on dapper (it did on breezy). Messages I could catch:

/var/log/syslog:
Mar 16 02:01:15 sheep kernel: [4295947.539000] powernow-k8: MP systems not supported by PSB BIOS structure

/var/log/messages:
Mar 16 02:01:15 sheep kernel: [4296066.588000] powernow-k8: Found 1 AMD Athlon 64 / Opteron processors (version 1.50.4)

console:
FATAL: Error inserting powernow_k8 (/lib/modules/2.6.15-18-k7/kernel/arch/i386/kernel/cpu/cpufreq/powernow-k8.ko): No such device

the CPU is an AMD Sempron 3100+, which normally supports clock steps at 1000 and 1800 MHz. Mainboard Asus K8N-E Deluxe. With Bios-Version 1006 I had 800MHz, with version 1011 (latest) 1800MHz now.

Revision history for this message
sorchuchu (riccardo-leccese) wrote :

I have the same exact problem on a machine with Dapper on AMD64 Turion.

That's what dmesg | grep powernow says about:
[ 31.117297] powernow-k8: Found 1 AMD Athlon 64 / Opteron processors (version 1.50.4)
[ 31.117307] powernow-k8: MP systems not supported by PSB BIOS structure

Before i was running an Ubuntu Breezy and everything was woking fine.

I suppose this problem it's related to the kernel that enable the smp also on a machine that actually doesn't have double processor.

I really hope the problem will be fixed soon.

Revision history for this message
Kai F. Lahmann (kfl) wrote :

a quick fix: install (and use) the linux-386 kernel, NOT the -k7 Version!

Changed in linux-source-2.6.15:
status: Unconfirmed → Fix Committed
Changed in linux-source-2.6.15:
status: Fix Committed → Fix Released
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