I've been struggling with suspend to ram for two weeks trying to get it to work
and I found out a very strange behaviour:
- 2disk or pm-hibernate work fine out of the box
- s2ram and pm-suspend from X work *only* when resuming from hibernate
Invoking s2disk or pm-suspend on a normal boot seem to suspend the laptop
correctly but on resume, no matter what quirks I try, laptop is freezed with
blank screen and no keyboard control. On resume hd led flashes for a while, so
hd should be ok, but caps lock led doesn't (magic sysrq doesn't help).
My laptop is a 2004 acer travelmate 290 with ipw2200 and 855gm intel graphics.
The problem is somewhat related to the graphic card since s2ram works properly
in console (when no X is started) and even in X when using vesa instead of
intel driver in xorg.conf.
I've read some documentation on s2ram and pm-utils pages and googled around. I
tried passing "-f -a3" or "-f -p -m" options as suggested for intel driver.
also lshal|grep quirk returns nothing.
I've also tried creating a file in /etc/pm/sleep.d with:
SLEEP_MODULE=”uswsusp”
SUSPEND_MODULES=”psmouse”
S2RAM_OPTS=”-f -a3″
with no luck.
My conclusion is: there must be some magic in the way s2disk/pm-suspend handles
the video card... but what's that? Do you have some hints?
Thanks,
leonardo
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