Re: ACPI on IBM Thinkpad T30
Serge Gebhardt may (or may not) have said:
>
> I find this line in dmesg quite interesting:
> cpufreq: No CPUs supporting ACPI performance management found.
>
Yep, I get this too (P4M 1.8 - *not* Centrino). No worries you can still
use the old cpufreq interface to slow the machine down. Non ACPI just
gives you two speeds to work with, full 1.8 and slow 1.2.
echo "1200000:1800000:powersave" > /proc/cpufreq.
echo "1200000:1800000:performance" > /proc/cpufreq to restore.
You can actually tweak the cpu through the acpi interface too:
echo "N" > /proc/acpi/processor/CPU/throttling where 0 <= N <= 7.
This really does work, try it with "7" and watch the system crawl, not
sure if this saves any power though.
> 1) Seen in dmesg:
> i810_audio: Audio Controller supports 6 channels.
> i810_audio: Defaulting to base 2 channel mode.
> Can I enable 6 channels? currently I have to stop XMMS (so that
> /dev/dsp gets released) to get sound in another application. Is there
> a workaround to this issue or is it hardware specific (I don't think
> it is, because Windows handles more than one input)?
Not sure on this one, I'm using Alsa so it lets me have multiple apps
running sound and there's no spdif out on my machine to get at the 6
channels anyway.
> The middle button works anyway, when you disable the touchpad in the
> BIOS.
Yep, this has always been the case, I'm a touchpad user though (heretic
!!) and missed the middle button.
Mike
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