Ubuntu
linux package

  1. Bug #365798
  2. Comment #24

Comment 24 for bug 365798

Revision history for this message
Christoph Dwertmann (cdwertmann) wrote :

I've got three Intel CPU machines here, all running Jaunty with kernel 2.6.28-11-generic.

On the Intel(R) Core(TM)2 CPU 6400 @ 2.13GHz (Dual Core PC) I get:
 find /sys/devices/system/cpu/cpu*/cpufreq
find: `/sys/devices/system/cpu/cpu*/cpufreq': No such file or directory

On the Intel(R) Atom(TM) CPU N270 @ 1.60GHz (eeeBox) I get:
 find /sys/devices/system/cpu/cpu*/cpufreq
find: `/sys/devices/system/cpu/cpu*/cpufreq': No such file or directory

On the Intel(R) Core(TM)2 CPU T7200 @ 2.00GHz (Dual Core Laptop) I get:
 find /sys/devices/system/cpu/cpu*/cpufreq
/sys/devices/system/cpu/cpu0/cpufreq
/sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_min_freq
/sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_max_freq
/sys/devices/system/cpu/cpu0/cpufreq/scaling_min_freq
/sys/devices/system/cpu/cpu0/cpufreq/scaling_max_freq
/sys/devices/system/cpu/cpu0/cpufreq/affected_cpus
/sys/devices/system/cpu/cpu0/cpufreq/related_cpus
/sys/devices/system/cpu/cpu0/cpufreq/scaling_governor
/sys/devices/system/cpu/cpu0/cpufreq/scaling_driver
... and so on, cpufreq works fine!

CPU frequency scaling only seems to be supported only on certain CPUs in jaunty.