rtcwake on Kobo?

[z000ao8q]

Hello,
I just remember 2 important parts from my implementation:
- kill all nickel & Co (I don´t even start them; i commented them in run.sh)
- get the system- and the hardware-clock right. if they are not matching, the wakeup timestamp can not be used.

i am running a own sh-script to set the times from time to time. because both clocks are running un-synced.
I know its not completely correct with summer/winter-time. but I don´t care. I simply added another hour-wake to be more tolerant.

echo `date`
ntpd -d -q -p de.pool.ntp.org
sleep 10
echo `date`
newtime=$((`date +%s`+7200))
newtime2=`date +%T -d @$newtime`
date +%T -s $newtime2
echo `date`
hwclock -w -u

[Soern]

Hi there!

First of all, thank you z000ao8q for your work - suspending my Kobo works now!

However I had to fiddle with a few things as suspending did not function right away.

My device did suspend, but did not resume properly. I fixed the issue by unloading the modules and stopping the blinking LED.

Spoiler:

echo "ch 4" > /sys/devices/platform/pmic_light.1/lit
echo "cur 0" > /sys/devices/platform/pmic_light.1/lit
echo "dc 0" > /sys/devices/platform/pmic_light.1/lit

My suspend script now looks as follows:

#!/bin/sh
zcat /etc/images/one_moment_please.raw.gz  | /usr/local/Kobo/pickel showpic
echo 1 > /sys/power/state-extended
sh /usr/sbin/wifidown.sh

rmmod dhd
rmmod sdio_wifi_pwr
sync

/mnt/onboard/stuff/busybox_kobo rtcwake -m mem -s 30

insmod /drivers/ntx508/wifi/sdio_wifi_pwr.ko
insmod /drivers/ntx508/wifi/dhd.ko
sleep 2
sh /usr/sbin/wifiup.sh
zcat /etc/images/splash.raw.gz   | /usr/local/Kobo/pickel showpic

I don't know if stopping the blinking is absolutely necessary - I believe that the module unloading did the trick ;-)

The wifiup/wifidown.sh scripts are identical to the ones described here: http://www.scherello.de/?id=265.

[fulldecent]

I have tested rtc_sleep on a Kobo Aura Edition 2. It is apparently working as expected--basically it is unresponsive in all ways for a set number of seconds and then comes back to life.

I'd like to know if unloading modules like Wi-Fi before sleep will actually save energy.