I totally missed that there's an xorg.conf in this system. I always went straight to xorg.conf.d and was puzzled to only find the default files there.

I'll give that a try. Thanks!

@systemd:
I don't want to turn this into yet another systemd thread and my knowledge about init systems isn't deep enough to actually judge that matter.
With the dependency situation in the long run I mean post-jessie. The quality of the software in the debian repos varies greatly and my concern is that some packages in the "outskirts" may not be tested enough against a 2nd non-default init system.
I think fso-deviced is a good example. Apparently I'm the only one who has tested it since the systemd transition and there might be lots of other packages which seem to be ok, but are actually simply not used which means nobody notices that they're not ok.

Sounds good.
btw, I had a look at Maemo's power_supply directory and apparently there's no value indication the current charge either. How does Maemo determine the battery status? Based on the voltage?