[ltp] Thinkpad buttons, /dev/nvram, and return from S3 with ACPI

[Ari Pollak]

I've had ACPI working pretty much the same (fairly well, minus a few 
features, like the loss of acpi interrupts after return from suspend) 
since about 2.6.0-test9. I just built all of ACPI into modules and load 
all of them at startup, as well as installed the acpi utility and acpid 
daemon. Then i get a nice /proc/acpi tree with some fun information. 
Executing "echo 3 > /proc/acpi/sleep" will put the machine to sleep 
pretty quickly, and holding down the power button is currently the only 
way to wake it up (there's a patch in the works to relieve that). 
Suspending is the easy part, the problem is just that certain drivers 
don't come back correctly all the time; psmouse seems to have been fixed 
now, but I have sporadic problems with e1000 and orinoco_cs.
I never really tried APM on this laptop so I don't know how well it 
works; I suppose I should, the battery life when using ACPI & cpudynd 
isn't that great anyway (about 2 1/2 hours with the standard battery).

Chun-Yu Shei wrote:
> 
> Wow, you have ACPI suspend working in that?  I don't think it works on 
> mine...I'm using APM at the moment.  Last time I tried it it froze when 
> I tried to suspend it so I recompiled with just APM.  How did you set it 
> up?
> 
> - Chun-Yu