Hey guys!

I’ve a problem with my display, where it stays dark after I enable the HDMI output via commandline like this:
First I disable the output with /opt/vc/nin/tvservice -o and the display goes in standby after some seconds like it should be.
But when I want to activate it again /opt/vc/nin/tvservice -p the display wakes up and gets a bit brighter but stays blank/dark after that.

Does anyone know that problem and may have a solution for this?