laptop suspend 4515

Luca Pireddu

Suspend on acpi and linux is non-trivial ... actually, it usually was no problem with the elder standard apm. Since most laptops still supports apm, it is possible to build a kernel without acpi support, but with apm support, and get the suspend to work.

I managed to get acpi sleep-to-memory to work on my Lenovo-IBM Thinkpad T43 running gentoo. It required some tweaks; I had to shoehorn a kernel patch for getting the SATA HD interface to wake up properly. I have added the parameter acpisleep=s3bios to linux at boot time. Except for that, I found a sleep.sh file somewhere out there which I use for sleeping:

==== cut ===== #!-bin-sh

# remove USB 1.1 driver modprobe -r uhcihcd # sync filesystem and clock syncsbin-hwclock --systohc

# switch to console FGCONSOLE=`fgconsole` chvt 1usr-sbin-radeontool light off

# go to sleep

# readjust the clock (it might be off a bit after suspend)sbin-hwclock --adjustsbin-hwclock --hctosys

# turn on the backlight and switch back to X radeontool light on chvt $FGCONSOLE

==== cut =====

The script above gets started frometc-acpi-default.sh

-- This signature has been virus scanned, and is probably safe to read Tobias Brox, 68 plus 1¡42'N, 18¡57'E