[Bug 478192] Re: cpufreq buggy on thinkpad t42

EricW@Hamburg ew-tech at gmx.de
Tue Nov 24 04:44:18 UTC 2009


Reason for this bug is a missing default setting in karmic.

1. In user gconf the apps/gnome-power-manager/cpufreq tree is missing completely
2. sysfsutils are not installed by default
3. The gnome-cpu applet cannot save changes permanently

We have a undefined state after boot, the kernel dont know what to do
and goes crazy.

If a userspace daemon like powernowd is installed or sysfsutils with
following conf the situation can be cleared.

#
# /etc/sysfs.conf - Configuration file for setting sysfs attributes.
#
# The sysfs mount directory is automatically prepended to the attribute paths.
#
# Syntax:
# attribute = value
# mode attribute = 0600 # (any valid argument for chmod)
# owner attribute = root:wheel # (any valid argument for chown)
#
# Examples:
#
# Always use the powersave CPU frequency governor
# devices/system/cpu/cpu0/cpufreq/scaling_governor = powersave
devices/system/cpu/cpu0/cpufreq/scaling_governor = ondemand

This bug duplicates to: 460064, 475706, 434255

-- 
cpufreq buggy on thinkpad t42
https://bugs.launchpad.net/bugs/478192
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