I've a radeon r9 270x with four outputs, two DVI, one HDMI and one DisplayPort output.
I'd like to configure the X server such that it has two screens, from a user's point of view it should provide DISPLAY 0.0 and 0.1.
I tried with two Monitor, two Device and two Screen sections in /etc/X11/xorg.conf. This works if I don't specify "Screen" explicitely in the Device section but then I end up with a single Screen (DISPLAY=0.0).
I tried to explicitely set the Screen number in the screen section (like below) but this didn't work.
If I select Screen number 0 for the first Device Section and Screen number 1 for the second Device section then the X server starts, but from /var/log/Xorg.0.log it see that the X server tries to use the DisplayPort and HDMI outputs which are not connected.
I I select Screen numbers 2 and 3 in the Device sections then the X server refuses to start.
# Screen 1 # doesn't work
Any ideas how to get a dual screen set up with the radeon driver?
This is debian unstable, Kernel 4.3 if it matters.