Hi (I was off-line, sorry), On Mon, Sep 13, 2004 at 05:07:30PM +0200, Frans Pop wrote: > Hello Bruno, > > I saw your post to d-laptop in response to astryx last week, and I have a > similar problem. I hope you don't mind me mailing you this way. > ..
> [EMAIL PROTECTED]:/sys/devices/system/cpu/cpu0/cpufreq$ cat > scaling_available_frequencies > 349991 699982 1049973 1399965 1749956 2099947 2449938 2799930 > > But during boot I also get (from /var/log/kern.log): > kernel: p4-clockmod: P4/Xeon(TM) CPU On-Demand Clock Modulation available > kernel: p4-clockmod: Warning: Pentium 4-M detected. The speedstep-ich or > acpi cpufreq modules offer voltage scaling in addition of frequency > scaling. You should use either one instead of p4-clockmod, if possible. > > However, the 'speedstep-ich' module only gives me: > $ cat scaling_driver > speedstep-ich > $ cat scaling_governor > userspace > $ cat scaling_available_frequencies > 2799930 1599960 a P4M have only 2 frequency/voltage settings via speedstep. Throttling is another technique to lower the frequency (somehow) but voltage won't change, so power saving is not actually a win especially if the ACPI idle loop take place. > And if I use the 'acpi' module I get: > $ cat scaling_driver > acpi-cpufreq > $ cat scaling_governor > userspace > $ cat scaling_available_frequencies > 2800000 1600000 65535000 65535000 65535000 65535000 65535000 65535000 > 65535000 65535000 65535000 65535000 65535000 65535000 65535000 Funny bug.. I think it's already fixed, but well, I should check this though. > So, the only driver that gives me a nice range of frequencies is > p4-clockmod. But is not so usefull for power saving (though it may be helpfull in case of passive cooling). > I'm having another problem, which is that linux ACPI doesn't seem to > recognize my fan properly. The state is always off, even if I can clearly > hear the fan running. (Not sure if this is related.) > /proc/acpi/fan/FAN$ cat state > status: off > For that one, I need a dump of the acpi tables. Cheers, -- Bruno Ducrot -- Which is worse: ignorance or apathy? -- Don't know. Don't care.
