If you run gdm, kill it, then xdm will work.
Somehow gdm manages to initialise drm, ie avoids:
(EE) intel(0): [drm] failed to set drm interface version.
(EE) intel(0): Failed to become DRM master.
So simply, I had a some stage run gdm => xdm thereafter, no matter what I tried, would work.
Any clues anyone? (This is an intel (xdriinfo says i965) which I think means that the X driver needs kernel support. What stumps me, is that gdm works, therefore the kernel support must be there, and the driver OK - but what is the difference between the way gdm calls Xorg and the way xdm calls it?)
Now I see how I was "lucky" in 7:
If you run gdm, kill it, then xdm will work.
Somehow gdm manages to initialise drm, ie avoids:
(EE) intel(0): [drm] failed to set drm interface version.
(EE) intel(0): Failed to become DRM master.
So simply, I had a some stage run gdm => xdm thereafter, no matter what I tried, would work.
Any clues anyone? (This is an intel (xdriinfo says i965) which I think means that the X driver needs kernel support. What stumps me, is that gdm works, therefore the kernel support must be there, and the driver OK - but what is the difference between the way gdm calls Xorg and the way xdm calls it?)