p4-clockmod and possible powernowd regression ?

Olivier Cortes olivier.cortes at deep-ocean.net
Thu Mar 17 09:19:37 CST 2005


Hi Ubuntu Team,

One or two weeks ago, i installed a warty system on an ASUS P4P800S-X 
(Intel P4 2.8Ghz). I immediately dist-upgraded to hoary, it went 
smoothly (beside the fact that some gnome apps mess themselves with 
their preferences, like gnome-system-monitor with the displayed columns, 
but that's not related to the packaging system).

At this time my cpufreq applet showed a nice descent to 349Mhz when the 
machine was idle, and displayed correctly the variations of the clock 
modulations when there were some.

Last week, i dist-upgraded one more time to follow hoary, and 
cpufreq-applet couldn't detect the cupfreq mode of my P4 any more 
(Showing "--- ??"). I investigated the problem, in powernowd, and found 
the message at boot :

Your CPU "Intel Pentium4(R) 2.8Ghz" is known to _not_ support frequency 
scaling !

BUT, if i manually put p4-clockmod in /etc/modules (it is not loaded by 
hotplug), and tweak /usr/share/powernowd/cpufreq-detect.sh to exit 0 at 
first line (not to test at all), i get my cpufreq applet back :)
And my CPU obviously supports frequency scaling !

surely a "case" is missing somewhere ? or the powernowd wants "pure" 
cpufreq and clockmod is an erzats ? I don't have time to investigate in 
the init.d script, wich is much complicated than the warty one, so i 
forward the problem to you in case you can correct this before Hoary is 
released.

thank you for you time and advise,

Olivier



More information about the ubuntu-devel mailing list