(arch, thinkpad x200) just tried to set up a script to switch from "suspend to ram" to "suspend to disk" after 24 hours.
I am using rtcwake for this.
weird problem: rtcwake is not working. If I try something like "rtcwake -s 60 -m mem", my device (thinkpad x200) enters standby, after ~60 sec the a/c-Led blinks a short duration of time, but the device doesnt wake up from standby.
However if I plug ac-cable in and try this again, the device wakes up after 60 seconds.
Does someone have an idea what the difference between ac pluged in and battery is in that case?
Thanks for you help :-)