Bug 14492 - speedstep-ich with compaq evo n800c not working anymore since
Summary: speedstep-ich with compaq evo n800c not working anymore since
Status: CLOSED DUPLICATE of bug 14340
Alias: None
Product: Power Management
Classification: Unclassified
Component: cpufreq (show other bugs)
Hardware: i386 Linux
: P1 normal
Assignee: cpufreq
Depends on:
Reported: 2009-10-27 11:35 UTC by Joerg-Volker Peetz
Modified: 2009-10-27 21:03 UTC (History)
1 user (show)

See Also:
Kernel Version:
Regression: Yes
Bisected commit-id:

output of acpidump (111.88 KB, text/plain)
2009-10-27 11:35 UTC, Joerg-Volker Peetz
output of dmesg (19.07 KB, application/octet-stream)
2009-10-27 11:36 UTC, Joerg-Volker Peetz
kernel .config file (47.34 KB, application/octet-stream)
2009-10-27 11:37 UTC, Joerg-Volker Peetz

Description Joerg-Volker Peetz 2009-10-27 11:35:00 UTC
Created attachment 23543 [details]
output of acpidump

Since kernel (previous 2.6.31 kernels did not boot) the cpufreq driver speedstep-ich compiled into the kernel does not work anymore on my notebook Compaq Presario 2800 (customer version of EVO N800c) with Pentium 4m CPU with 1900 MHz.
The directory cpufreq under /sys/devices/system/cpu/cpu0/ is missing and the CPU is running at a "fractal" frequency (1893.922 MHz).

I recompiled the kernel with the CPUFreq processor drivers "ACPI Processor
P-States" and "Intel Speedstep on ICH-M chipsets (ioport interface)" as modules.
I manually tried to insert the cpufreq driver modules, result:

# modprobe speedstep-ich
FATAL: Error inserting speedstep_ich
(/lib/modules/ No
such device
# modprobe -r speedstep-lib

# modprobe acpi-cpufreq

This driver works. the cpufreq entry in /sys/devices/system/cpu/cpu0/ exists
and, since I'm using the ondemand governor, the CPU frequency without load is
1200 MHz (my Compaq has a Pentium 4m 1900 MHz).

I attach the output of acpidump and dmesg, as well as my kernel config.

I already contacted Zhao Yakui from Intel who suggested to open this bug report.
Comment 1 Joerg-Volker Peetz 2009-10-27 11:36:58 UTC
Created attachment 23544 [details]
output of dmesg
Comment 2 Joerg-Volker Peetz 2009-10-27 11:37:51 UTC
Created attachment 23545 [details]
kernel .config file
Comment 3 Rafael J. Wysocki 2009-10-27 21:03:23 UTC

*** This bug has been marked as a duplicate of bug 14340 ***

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