Running two 4K monitors at 240 Hz,
I have black-screen freezes of both monitors for about 10 to 15 seconds at startup of Windows and startup of games which start in exclusive fullscreen mode.
Switching from and to games running in exclusive fullscreen mode by alt-tabbing or closing the game also triggers the black-screen freeze.
It really is annoying.
This issue is happening if at least one monitor is using DSC on the NVIDIA dGPU.
If I disable DSC on one monitor - so it runs at 4K 120 Hz and the other one runs at 4K 240 Hz - the issue is still present but the black-screen freezes are shorter.
If I connect one monitor running at 4K 240 Hz to the AMD iGPU and the other one still connected to the NVIDIA dGPU also running at 4K 240 Hz, the issue does not occur.
This is not really a viable workaround as this intruduces stutters on both monitors when playing video on the screen which is connected to the iGPU.
Disabling “Hardware-accelerated GPU scheduling” in
Windows Settings → System → Display → Graphics → Advanced graphics settings
and rebooting seems to fix it.
After making sure the black-screen freezes are not occurring anymore, i enabled it again and rebooted.
Since the toggling i do not have any problems with black-screen freezes anymore.
It doesn’t work for me. I still have the issue even with Hardware-accelerated GPU scheduling disabled.
I would like to clarify that only those black-screen freezes when alt-tabbing from and to exclusive fullscreened games do not occur anymore.
The black-screen freezes are still occuring at startup of Windows and everytime the monitor-configuration changes - like turning displays off or on.
As thesword53 already mentioned, this does not occur in Linux.
@NVIDIA
This is a long-standing issue which has been known for years - this very forum and also other forums are full of posts from users which state the same issues.
When can we expect a fix for this long-standing issue?
I sill have the issue even when alt-tabbing in exclusive fullscreened games.