Super User is a question and answer site for computer enthusiasts and power users. Join them; it only takes a minute:

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

(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 :-)

share|improve this question

Boot to BIOS setup menu > Config > Power

Enable - Timer Wake with Battery Operation

That should solve your problem.

share|improve this answer

You must log in to answer this question.

Not the answer you're looking for? Browse other questions tagged .