Jerry Geis wrote:

I am trying to find a way to tell the ORDER of X drivers.

I have a VM image of CentOS 7. If I boot the image I want the generic driver to load. But if I put that image on hardware I want the Intel driver to load.

So if I specific the /etc/X11/xorg.conf.d/20-intel.conf and specify Intel - this is great for the physical device. But booting my image it fails cause there is not Intel hardware.

How can have ONE X config that specifies Intel first and if not present load generic VGA stuff. Thanks,

You could write a display-manager.service ExecStartPre script that copies/removes the required file(s) to/from /etc/X11/xorg.conf.d/ depending on the hardware it finds?

i.e. create a file like /etc/systemd/system/display-manager.service.d/hardware.conf containing:

[Service] ExecStartPre=-/path/to/my/custom/hardware/script

I do something similar - which works fine

James Pearson