I have a DELL L501X computer supporting Optimus; my Nvidia chip is connected to the hdmi port. The driver is Nvidia-current; Bumblebee is installed and working. My PC resolution is set to 1366x768.
I managed to set up an external monitor simply by removing the edid line in the
xorg.conf.nvidia file and starting programs with
DISPLAY=:8 optirun program.
optirun nvidia-settings -c :8 I checked that the external screen (a tv monitor) is detected with its native resolution, which is 1920x1080. So far so good.
The problem now is that the program, e.g. Firefox, fills only the middle and upper left half of the screen. The rest remains black. Changing the resolution down to 1280 etc. the screen is filled quite better.
So what is the problem, what can I do?