Re: Awakening from suspend-to-mem
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Andrew McMillan wrote:
> 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.
>
I don't understand why you people are taking so much of pain automating a
lot of stuff using scripts.
I presume most notebook users would be using GUI on it (Probably KDE).
KDE's klaptopdaemon is excellent in handling all this suspend/resume stuff
for you. I've been using it for months now without any problem.
Worth a try.
rrs
- --
Ritesh Raj Sarraf
RESEARCHUT -- http://www.researchut.com
Gnupg Key ID: 04F130BC
"Stealing logic from one person is plagiarism, stealing from many is
research."
"Necessity is the mother of invention."
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