Bug 14492
| Summary: | speedstep-ich with compaq evo n800c not working anymore since 2.6.31.4 | ||
|---|---|---|---|
| Product: | Power Management | Reporter: | Joerg-Volker Peetz (jvpeetz) |
| Component: | cpufreq | Assignee: | cpufreq |
| Status: | CLOSED DUPLICATE | ||
| Severity: | normal | CC: | rjw |
| Priority: | P1 | ||
| Hardware: | i386 | ||
| OS: | Linux | ||
| Kernel Version: | 2.6.31.5 | Subsystem: | |
| Regression: | Yes | Bisected commit-id: | |
| Attachments: |
output of acpidump
output of dmesg kernel .config file |
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Created attachment 23544 [details]
output of dmesg
Created attachment 23545 [details]
kernel .config file
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Created attachment 23543 [details] output of acpidump Since kernel 2.6.31.4 (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/2.6.31.5/kernel/arch/x86/kernel/cpu/cpufreq/speedstep-ich.ko): 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.