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Message-ID: <20060826145920.GA1826@elf.ucw.cz>
Date: Sat, 26 Aug 2006 16:59:20 +0200
From: Pavel Machek <pavel@....cz>
To: linux-kernel@...r.kernel.org, david-b@...bell.net
Cc: Linux-pm mailing list <linux-pm@...ts.osdl.org>
Subject: waking system up using RTC (was Re: rtcwakeup.c)
Hi!
> > p.s. A followup message will include a userspace program which
> > makes it easier to try the RTC wakeup mechanism.
>
> For example, if your system actually supports RTC wakeup correctly:
>
> rtcwake -t $(date -u -d 'tomorrow 6:30am' +'%s') -m mem
>
> will set up the system to wake up tomorrow at 6:30am, then suspend-to-RAM by
> writing "mem" to /sys/power/state.
>
> Or for testing kernels, unattended scripts like this may help:
>
> while true
> do
> echo "suspend-to-disk for 10 minutes starting $(date)"
> rtcwake -s $((10 * 60)) -m disk
> sleep 500
> done
>
> If there are many RTC utilities out there that aren't x86-specific, I didn't
> happen to find them. Ergo this one.
Your new RTC driver seems to work for me (thinkpad x60), but no, I
can't get wakeup using RTC to work:
root@amd:~# echo HDEF > /proc/acpi/wakeup
root@amd:~# cat /proc/acpi/wakeup
Device Sleep state Status
LID 3 * enabled
SLPB 3 * enabled
DURT 3 enabled
EXP0 4 enabled
EXP1 4 enabled
EXP2 4 enabled
EXP3 4 enabled
PCI1 4 enabled
USB0 3 enabled
USB1 3 enabled
USB2 3 enabled
USB7 3 enabled
HDEF 4 enabled
root@amd:~# sync
root@amd:~# sync; /tmp/rtcwake -s $((2 * 60)) -m disk
rtcwake: wakeup from "disk" using rtc0 at Sun Aug 27 16:54:49 2006
root@amd:~#
Any ideas? (I tried suspending to RAM, too; no change).
Is acpi-rtc code likely to be merged?
Pavel
--
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
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