[Bug 53060] Re: HP Compaq nw9440 - hibernation problem

[Fedor Isakov]

Just to confirm that hibernation can indeed be made working in Feisty
(2.6.20-16-generic). Here's the settings I had to tweak in order to make
it work for me:

/etc/modprobe.d/nvidia:

options nvidia NVreg_SoftEDIDs=0
options nvidia NVreg_RegistryDwords="PerfLevelSrc=0x2222"

(the latter option gets rid of the flickering in Beryl)

/etc/default/acpi-support:

ACPI_SLEEP=true
ACPI_HIBERNATE=true
ACPI_SLEEP_MODE=mem
MODULES=""
MODULES_WHITELIST="ipw3945"
SAVE_VBE_STATE=true
VBESTATE=/var/lib/acpi-support/vbestate
POST_VIDEO=true
USE_DPMS=true
DOUBLE_CONSOLE_SWITCH=true
HIBERNATE_MODE=platform
LOCK_SCREEN=true
STOP_SERVICES="mysql"
RESTART_IRDA=false
ENABLE_LAPTOP_MODE=true

The "HIBERNATE_MODE=platform" seems to be very important,  without it
the system would either lock up on resume or the kacpid process would
start consuming 100% of the CPU and the system would lock up eventually.

As to suspend, it *seems* to work: the system is alive after resuming
from suspend, but the keyboard and the mouse are not working. Pressing
the power button makes the laptop shutdown, so I figure this could also
be made working given some efforts.

-- 
HP Compaq nw9440 - hibernation problem
https://bugs.launchpad.net/bugs/53060
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