Here is a workaround in my case: 
Login with the uggly screen and execute in a terminal:
$ xrandr --output eDP1 --set "scaling mode" "Full"
Got error on the output but it works…
X Error of failed request: BadMatch (invalid parameter attributes)
1 ··Major opcode of failed request: 140 (RANDR)
2 ··Minor opcode of failed request: 21 (RRSetCrtcConfig)
3 ··Serial number of failed request: 71
4 ··Current serial number in output stream: 7