Lost resolution after reboot?!?

[Kai-Christoph]

/opt/vc/bin/tvservice -m CEA
Group CEA has 2 modes:
           mode 4: 1280x720 @ 60Hz 16:9, clock:74MHz progressive 
           mode 16: 1920x1080 @ 60Hz 16:9, clock:148MHz progressive 

/opt/vc/bin/tvservice -m DMT
Group DMT has 1 modes:
  (prefer) mode 4: 640x480 @ 60Hz 4:3, clock:25MHz progressive 

The Mirror worked for mont without any issues…

[yawns]

@Kai-Christoph said in Lost resolution after reboot?!?:

hdmi_group=2

means “use DMT”
hdmi_group=1 would use CEA

So I would suggest finding out possible modes in CEA and set these in your config.txt

[Kai-Christoph]

tvservice -d edid
Nothing written!

I tried this before…
edid seems not to work.

[Kai-Christoph]

Now I tried this, as mentioned here

hdmi_cvt=1920 1200 60 5 0 0 1

Nothing happened: The Raspi stucks on 640x480…

[Kai-Christoph]

Man, I could freak out: The HDMI to DVI cable is somehow broken. I replaced it and everything works fine again. I spent hours to solve the problem… F**K!

[yawns]

Oh bad. Good you found it and good it was not fault of Windows … errm Raspbian ;)