http://bugzilla.kernel.org/show_bug.cgi?id=9717
Summary: Cpu Frequency Scaling Broken Since Kernel 2.6.22.12-0.1
on AMD Athlon64 X2 6000+
Product: ACPI
Version: 2.5
KernelVersion: 2.6.22.13-0.3-default
Platform: All
OS/Version: Linux
Tree: Mainline
Status: NEW
Severity: normal
Priority: P1
Component: Config-Processors
AssignedTo: [EMAIL PROTECTED]
ReportedBy: [EMAIL PROTECTED]
Latest working kernel version: 2.6.22.9 (-0.3, I think)
Earliest failing kernel version: 2.6.22.12-0.1
Distribution: OpenSUSE 10.3
Hardware Environment: AMD Athlon™ 64 X2 Dual Core Processor 6000+ on AM2
ASRock 2xDDR2 ALiveNF7G-HDReady VSL 7050/630a
Software Environment: OpenSUSE 10.3
Problem Description:
When I recently upgraded the kernel from 2.6.22.9 (-0.3, I think) to
2.6.22.12-0.1 via yast2 suddenly the cpufreq feature of the power management
stopped working. It was working great before, with the CPU scaled down from 3
GHz to 1 GHz or so depending on the system load. kpowersave and ksensors
confirmed this.
I get the following messages in /var/log/messages
Dec 7 08:43:49 hostname rchal: Cannot load cpufreq governors - No cpufreq
driver available
Dec 7 08:44:13 localhost powersaved[4604]: WARNING (CpufreqManagement:51) No
capability cpufreq_control
Dec 7 08:44:13 localhost powersaved[4604]: WARNING (CpufreqManagement:51) No
capability cpufreq_control
Since I have not done anything to the system except standard updates via yast2
from standard sources I do not believe that I have done anything to brake
cpufreq.
Upgrading to kernel 2.6.22.13-0.3 has brought no improvement, cpufreq is still
broken.
I tried to insmod these modules by hand:
insmod
/lib/modules/2.6.22.13-0.3-default/kernel/drivers/cpufreq/cpufreq_userspace.ko
insmod
/lib/modules/2.6.22.13-0.3-default/kernel/drivers/cpufreq/cpufreq_powersave.ko
insmod
/lib/modules/2.6.22.13-0.3-default/kernel/drivers/cpufreq/cpufreq_stats.ko
insmod
/lib/modules/2.6.22.13-0.3-default/kernel/drivers/cpufreq/cpufreq_conservative.ko
They apparently load OK in the kernel and are displayed by lsmod, however, this
has no effect on the CPU frequency.
/etc/init.d/powersaved status
shows that the daemon that is probably responsible for CPU frequency scaling is
running. CPU and other hardware are unchanged.
Now I have run out of ideas. I therefore suppose this is a kernel bug?
Steps to reproduce: Upgrade kernel as above.
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