[plug] Acer Aspire 4315
rennie.barnett at gmail.com
Thu Feb 14 19:23:08 WST 2008
I purchased one of the cheep Acer laptops with Ubuntu preinstalled that I saw
mentioned here a while ago.
I've been pretty happy with it. It basically does what is claimed without too
much fuss. My only issue is power management - both suspend and cpu
throttling are not working.
At the moment I'm trying to get the CPU throttling working but I just can't
convince the kernel it is possible.
# cat /proc/acpi/processor/CPU0/info
processor id: 0
acpi id: 0
bus mastering control: yes
power management: yes
throttling control: no
limit interface: no
.... and ...
# cat /sys/devices/system/cpu/cpu0/
cache/ crash_notes microcode/ topology/
.. gives no mention of mention of "cpufreq"
I've tried loading a couple of modules (acpi-cpufreq & speedstep*) that I
thought might help but they all give errors (device not present etc) and
Is it possible that the Celeron CPU/chipset/BIOS does not support cpu
throttling? I assumed any notebook type hardware would these days.
Does anybody have any thoughts on what I might try next?
I'm still testing things with the suspend issue.
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