On Wed, 2005-05-11 at 15:42 +0300, Alexander A. Vlasov wrote: > Hello all. > > Finally, I installed Sarge on my Compaq Presario 2200, but I face > following problem: > laptop can be suspended-to-ram by `echo mem > /sys/power/state' (and > suspending works fine -- led blinks slowly, display shutting down and so > on), but it can't awake from this state. Opening lid or pressing the > power button leads laptop to shutdown, not to resuming to normal state. > > Any ideas/suggestions?
Hi,
On some laptops I have seen that if you hold down the "Fn" key for a
second or two it will unsuspend in a manner that is not recognised as a
power button event.
Otherwise it is necessary to add locking against recognition of the
power button event, while the suspend script is running. In another
e-mail you suggest that this would be a lock file that the
suspend/resume script would write, and that the power button script
would remove, but I wonder if a better solution would be for the
suspend/resume script to write and to remove (after resume, of
course :-)
With a tweak like that, my own scripts would look like this.
/etc/acpi/suspend_to_ram.sh:
==================================================
#!/bin/sh
# /etc/acpi/suspend_to_ram.sh
# Initiates a suspend to memory [e.g. when the lid is closed]
if ps -Af | grep -q '[k]desktop' && test -f /usr/bin/dcop
then
dcop --all-users ksmserver ksmserver logout 0 2 0 && exit 0
fi
sync
whereami --syslog --run_from suspend2ram undocked
DISPLAY=:0.0 xscreensaver-command -lock
logger -t "acpi-sleep" "Initiating sleep at `date`"
touch /var/lock/suspend-resume.lock
echo mem >/sys/power/state
sleep 1
logger -t "acpi-sleep" "Awakening from sleep at `date` ?"
(
# Run in a subshell so we can finish our job...
sleep 2
whereami --syslog --run_from resumefromram
) 2>&1 | logger -t 'acpi-sleep' &
sleep 1
rm /var/lock/suspend-resume.lock
==================================================
/etc/acpi/powerbtn.sh:
==================================================
#!/bin/sh
# /etc/acpi/powerbtn.sh
# Initiates a shutdown when the power putton has been
# pressed.
[ -e /var/lock/suspend-resume.lock ] && exit 0
if ps -Af | grep -q '[k]desktop' && test -f /usr/bin/dcop
then
dcop --all-sessions --all-users ksmserver ksmserver logout 0 2 0 &&
exit 0
else
/sbin/shutdown -h now "Power button pressed"
fi
==================================================
In regard to the display returning after resume: what chipset is that?
Which drivers? Are you using the kernel framebuffer? For the native
chipset, or the VESA one? What version of the kernel are you using?
I have seen those sorts of problems on my own laptop (Radeon FireGL T2
A.K.A. Radeon 9700) but do not see them now, using the kernel native
radeon framebuffer and a recent 2.6.x kernel.
Regards,
Andrew McMillan.
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