http://bugzilla.kernel.org/show_bug.cgi?id=12973
Summary: cannot use cpufreq scaling with the 2.6.29 kernel and
an X3360 chip
Product: ACPI
Version: 2.5
Kernel Version: 2.6.29
Platform: All
OS/Version: Linux
Tree: Mainline
Status: NEW
Severity: high
Priority: P1
Component: Power-Processor
AssignedTo: [email protected]
ReportedBy: [email protected]
Regression: Yes
I have an Xeon processor (X3360) on DFI LP LT P35 T2R motherboard (P35-based).
I'm running Debian/Lenny-amd64. The out-of-the-box kernel (2.6.26) allows me
to control the cpufreq via the acpi-cpufreq module. I need ext4 support and
just built up the 2.6.29 kernel using a slightly modified .config based on the
Lenny config. When I boot into the new kernel, cpufreq-info doesn't show that
the kernel driver is functional.
Here is the relevent section from my menuconfig:
[*] CPU Frequency scaling
[ ] Enable CPUfreq debugging
<*> CPU frequency translation statistics
[ ] CPU frequency translation statistics details
Default CPUFreq governor (ondemand) --->
-*- 'performance' governor
<M> 'powersave' governor
<M> 'userspace' governor for userspace frequency scaling
-*- 'ondemand' cpufreq policy governor
<M> 'conservative' cpufreq governor
*** CPUFreq processor drivers ***
<*> ACPI Processor P-States driver
< > AMD Opteron/Athlon64 PowerNow!
< > Intel Enhanced SpeedStep (deprecated)
< > Intel Pentium 4 clock modulation
*** shared options ***
Here is the output of cpufreq-info after I boot into the new kernel
$ cpufreq-info (C) Dominik Brodowski 2004-2006
Report errors and bugs to [email protected], please.
analyzing CPU 0:
no or unknown cpufreq driver is active on this CPU
analyzing CPU 1:
no or unknown cpufreq driver is active on this CPU
analyzing CPU 2:
no or unknown cpufreq driver is active on this CPU
analyzing CPU 3:
no or unknown cpufreq driver is active on this CPU
This is in stark contrast to the 2.6.26 that comes with Lenny, or the 2.6.27.10
that I have also successfully compiled.
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