Comment 20 for bug 1946303

After putting nvidia.NVreg_PreserveVideoMemoryAllocations=0 in the kernel command line I don't remember any black screens after wake from suspend. They certainly haven't happened in Ubuntu 22.04. The computer is always usable immediately after waking.

However, I have gotten lockups some time later after waking. These seem to never happen if I only use my main monitor, connected to the DVI port of the GeForce GT 710. That is the way X is configured to start. However, if I switch to the second monitor at some point after booting (also DVI but connected to the HDMI port), then lockups can happen, even after I switch back to the primary monitor. I use xrandr to switch. This is with the 470 driver.