[ltp] acpi vs. apm on a X31

[Dimitris Kogias]

Haven't yet seriously pursued ACPI, but I understand that with some work 
- including patching the DSDT data in the kernel to override what it 
reads from the BIOS - people have made it work on X31s.  Have you 
searched the X31 list on theshire.org?

I'm using APM on my X31 and it has worked "out of the box" with 2.4.2x 
and 2.6.x kernels, currently running 2.6.5-mc1.  Frequency scaling 
(using powernowd) takes the processor down to 600MHz most of the time. 
The only times I see the processor go full blast at 1.4GHz is for things 
like kernel builds or other intensive tasks.

Suspend to RAM works flawlessly.  Some drivers [used to] need to be 
unloaded on suspend and reloaded on resume, notably ehci, but as of 
2.6.5 I think that it's only the radeon driver, if you're using DRI (I'm 
not - yet), that needs this.

I can't comment about battery life as I don't use the machine much 
without AC power.

D.

David wrote:
> Hi, 
> I just want to get some infos:
> 
> acpi: is suspend to disk or ram working? (not the kernel 2.6 feature)
> 
> apm: can I change the system speed?
> 	works standby, suspend to disk/ram ??
> 
> many thanks
> 
> david