Package: cpufrequtils
Version: 007-1
Severity: normal
When using cpufrequtils or the kernel interface to the acpi-cpufreq
module on my VIA Eden 1.5 GHz CPU, I cannot set the frequency range
for the governor to the full hardware range. Trying to do so produces
weird frequency settings. Any of the two single frequencies offered
by the hardware can be included in a range, but not both at once.
Example transcript (lines replaced by [...] where identical to previous
output):
> sudo cpufreq-set --governor ondemand --min 400MHz --max 1500MHz; cpufreq-info
cpufrequtils 007: cpufreq-info (C) Dominik Brodowski 2004-2009
Report errors and bugs to cpuf...@vger.kernel.org, please.
analyzing CPU 0:
driver: acpi-cpufreq
CPUs which run at the same hardware frequency: 0
CPUs which need to have their frequency coordinated by software: 0
maximum transition latency: 10.0 us.
hardware limits: 400 MHz - 1.50 GHz
available frequency steps: 1.50 GHz, 400 MHz
available cpufreq governors: powersave, conservative, userspace, ondemand,
performance
current policy: frequency should be within 400 MHz and 600 MHz.
The governor "ondemand" may decide which speed to use
within this range.
current CPU frequency is 400 MHz.
> sudo cpufreq-set --governor ondemand --min 401MHz --max 1500MHz; cpufreq-info
[...]
current policy: frequency should be within 401 MHz and 1.50 GHz.
[...]
current CPU frequency is 1.50 GHz.
> sudo cpufreq-set --governor ondemand --min 400MHz --max 500MHz; cpufreq-info
[...]
current policy: frequency should be within 400 MHz and 500 MHz.
[...]
current CPU frequency is 400 MHz.
> sudo cpufreq-set --governor ondemand --min 400MHz --max 700MHz; cpufreq-info
[...]
current policy: frequency should be within 400 MHz and 600 MHz.
[...]
current CPU frequency is 400 MHz.
> sudo cpufreq-set --governor userspace --min 400MHz --max 1500MHz; cpufreq-info
[...]
current policy: frequency should be within 400 MHz and 600 MHz.
The governor "userspace" may decide which speed to use
within this range.
current CPU frequency is 400 MHz.
> cat /proc/cpuinfo
processor : 0
vendor_id : CentaurHauls
cpu family : 6
model : 13
model name : VIA Eden Processor 1500MHz
stepping : 0
cpu MHz : 400.000
cache size : 128 KB
fdiv_bug : no
hlt_bug : no
f00f_bug : no
coma_bug : no
fpu : yes
fpu_exception : yes
cpuid level : 1
wp : yes
flags : fpu vme de pse tsc msr pae mce apic sep mtrr pge cmov pat
clflush acpi mmx fxsr sse sse2 tm nx pni est tm2 xtpr rng rng_en ace ace_en
ace2 ace2_en phe phe_en pmm pmm_en
bogomips : 799.71
clflush size : 64
cache_alignment : 64
address sizes : 36 bits physical, 32 bits virtual
power management:
Thanks for your efforts. If you need any more information, let me know.
-- System Information:
Debian Release: squeeze/sid
APT prefers testing
APT policy: (500, 'testing')
Architecture: i386 (i686)
Kernel: Linux 2.6.32-trunk-486
Locale: LANG=en_GB.ISO-8859-15, LC_CTYPE=en_GB.ISO-8859-15 (charmap=UTF-8)
(ignored: LC_ALL set to en_US.UTF-8)
Shell: /bin/sh linked to /bin/bash
Versions of packages cpufrequtils depends on:
ii debconf [debconf-2.0] 1.5.33 Debian configuration management sy
ii libc6 2.11.2-2 Embedded GNU C Library: Shared lib
ii libcpufreq0 007-1 shared library to deal with the cp
ii lsb-base 3.2-23.1 Linux Standard Base 3.2 init scrip
cpufrequtils recommends no packages.
cpufrequtils suggests no packages.
-- debconf information:
cpufrequtils/enable: true
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