This occurs on my Thinkpad x31 Pentium-M 1.6GHz
After a hibernate resume cycle, the processor will not go above 1GHz.
The option to go above 1GHz is still shown but doesn't work. After a
reboot or a cold boot everything works as it should (i.e. upto 1.6GHz)
[EMAIL PROTECTED]:~$ cat /proc/cpuinfo
processor : 0
vendor_id : GenuineIntel
cpu family : 6
model : 9
model name : Intel(R) Pentium(R) M processor 1600MHz
stepping : 5
cpu MHz : 1000.000
[snip]...
[EMAIL PROTECTED]:~$ cat
/sys/devices/system/cpu/cpu0/cpufreq/scaling_available_frequencies
600000 800000 1000000 1200000 1400000 1600000
[EMAIL PROTECTED]:~$ cpufreq-info
cpufrequtils 002: cpufreq-info (C) Dominik Brodowski 2004-2006
Report errors and bugs to [EMAIL PROTECTED], please.
analyzing CPU 0:
driver: centrino
CPUs which need to switch frequency at the same time: 0
hardware limits: 600 MHz - 1.60 GHz
available frequency steps: 600 MHz, 800 MHz, 1000 MHz, 1.20 GHz, 1.40 GHz,
1.60 GHz
available cpufreq governors: conservative, userspace, ondemand, powersave,
performance
current policy: frequency should be within 600 MHz and 1000 MHz.
The governor "performance" may decide which speed to use
within this range.
current CPU frequency is 1000 MHz.
[EMAIL PROTECTED]:~$ sudo cpufreq-set -f 1600000
[EMAIL PROTECTED]:~$ cpufreq-info -f
1000000
[EMAIL PROTECTED]:~$ uname -r
2.6.20-16-generic
--
cpufreq locked in slowest speed
https://bugs.launchpad.net/bugs/88899
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