On Wed, 19 Nov 2003 00:18:22 -0500 Mike Phillips <[EMAIL PROTECTED]> wrote:
> 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. awesome. It seems I can even get it down to 250 MHz. The system would get really slow and /proc/cpuinfo would show the right frequency. But when measured with specific tools (eg x86info), they all find the CPU running at 2GHz (I have a 2GHz T30). These tools do not just read the identifier, they actually _measure_ the frequency. > 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. This seems to just throttle the CPU by putting load on it. After `echo 7 > /proc/acpi/processor/CPU/throttling` the system becomes really slow because of CPU load. It is certainly not the best way to save power :) But are there some daemons around, which switch the frequency depending on CPU load? That's what I need in the first place. Compiling should be really fast (2GHz) but I don't mind having the CPU at 250MHz while working. The switch should automatically be done in background. > > 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. I might give ALSA a try... Cheersm Serge
