I have removed this from xorg.conf:
Section "Extensions"
Option "Composite" "Disable"
EndSection
I’ve tried the rendering backends:
Open GL 2.0: only one screen, 3d effects available
Open GL 3.1: only one screen, 3d effects available
XRender: three screens, no flickering, but no 3d effects are available, but overall good performances. I will try to run any 3d application to see the behaviour.
I see that some application that use 3D do not start, as for example wine, vkcube, etc.
Interesting thing is that vkube, the 3D cube is working fine when I drag the window in the primary screen, on the other two screens it shows a black window.
if I run a game, for example TUX car racing, it shows properly on the primary screen, but on the rest of the screens it doesn’t visualize properly.
Maybe clean up your screen sections in xorg.conf and disable composite again
https://download.nvidia.com/XFree86/Linux-x86_64/460.67/README/xineramaglx.html
Hi generix, I’ve been trying for the past two days, seems that it’s not possible to have full acceleration with three screens. If I disable one screen, everything works fine.
However, suddenly the performances drops down and I have to reboot.
In conclusion, I will switch back to nouveau drivers as this is too problematic and the drivers are quite complex to set up.
Thanks for your support over the past days!
The feature has been added in the 470 beta driver, if you’re still interested.