The following is with a Compaq Presario X1050, Fedora Core 4 and Fedora 
kernel version 2.6.15-1.1831_FC4.

I'm trying to get suspend working on this laptop. It kind of works with 
a script which does

echo -n mem > /sys/power/state

to do the suspend, with calls in the suspend/restore to use vbetool to 
save/restore the video state and re-POST the video after resume. 
However, the keyboard was behaving wonky after resume (losing 
characters) and ACPI seems unhappy.

The full kernel output from boot, suspend and resume is attached. Note 
the "sleeping function called from invalid context" warning out of the 
ACPI code, the method execution failures in ACPI and synchronization 
errors from the psmouse and keyboard drivers.

I can provide some further info or debugging tests if desired.

-- 
Robert Hancock      Saskatoon, SK, Canada
To email, remove "nospam" from hancockr@nospamshaw.ca
Home Page: http://www.roberthancock.com/