I was just working with these setting on my laptop, Sharp Actius MM20,
last weekend.
If you compile all the ACPI extras as modules you should see:
/lib/modules/2.6.12.2/kernel/drivers/acpi/
inside this directory is:
ac.ko, battery.ko, button.ko, processor.ko, thermal.ko, video.ko
Once I modprobed battery, I was able to get a timer using gkrellm, or
from the command line program included with the acpid package. Adding
processor and thermal gave me a temperature reading from my CPU. Also, I
think it is dangerous to run without processor/thermal because if your
laptop begins to overheat, this will cut back the frequency to cool it down.
Also I would recommend adding the frequency scaling drivers. If your
laptop supports it, you need a frequency driver and a governor to use
this. The governors can be changed at run time by editing the files in
the /sys directory. I think the path is something like
/sys/devices/system/cpu/cpu0/cpufreq/. Inside there are files to set the
min,max CPU frequency and choose a governor. If you cat
scaling_available_governors, it will list all your supported ones, then
put the name of the governor you want to use in scaling_governor, for
example "echo ondemand > scaling_governor", will enable the ondemand
driver. The recommended governor for laptops now is "conservative" or
"powersave".
I haven't tried getting suspend to disk or memory working, and I hear it
kind of buggy. If you try it out, please report your findings here.
- Casey
Vivek Ayer wrote:
Thanks for the battery info. But this is one of those weird Toshiba
laptops that don't contain Toshiba firmware. They contain Phoenix BIOS
info. I can't the toshiba-acpi driver. Know any generic acpi drivers I
can use aside from the modules provided by the 2.6 kernel? Thanks.
Vivek
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