I am using a special configuration of monitors on some computers with two monitors. On old setup with NVidia graphics card I used xorg.conf with two screens setup. I was able to start different windows managers on each monitor, because one was DISPLAY :0.0 and another was DISPLAY :0.1.
Now I try to migrate from CentOS5 to CentOS7 and also computers have onboard Intel graphics instead of NVidia.
Whatever I try I only get DISPLAY :0.0. xdpyinfo says that the number of screens is 1 and dimensions of that screen are combined dimensions of both monitors.
There is no more xorg.conf in CentOS7. I would rather use /etc/X11/xorg.conf.d/ directory where I could put parts of xorg.conf, which are special.
How could I start xorg in that way that each separate screens and not one combined display? I want screens :0.0 and :0.1.
I used some xrandr commands to rotate one of the screen, etc. Can I add as display with xrandr?
Best Answer
I have found a solution here https://askubuntu.com/a/419614/217214. There is one thing to be careful of. xrandr reports
HDMI-1,HDMI-2andeDP-1outputs on my graphics adapter. However, I had to useHDMI1,HDMI2andeDP1in xorg.conf file.I did not use
/etc/X11/xorg.conffile. I added a file20-screens.confto/etc/X11/xorg.conf.d/directory. The file is very similar to the one provided in the solution https://askubuntu.com/a/419614/217214. So I don't see the point of repeating it here.