Made public today was CVE-2023-43785 as an out-of-bounds memory access within the libX11 code that has been around since 1996. A second libX11 flaw is stack exhaustion from infinite recursion within the PutSubImage() function of libX11… This vulnerability has been around since X11R2 in February of 1988.
Due to these issues coming to light, libX11 1.8.7 and libXpm 3.5.17 were released today with the necessary security fixes. More details on these latest X.Org security vulnerabilities via today’s X.Org security advisory.
They work fine on wayland when they are not being used as a primary GPU. My optimus laptop (680M + RTX3050) works perfect on Wayland because 99% to 100% of the time it actually uses the AMD GPU for the desktop things. It only uses the discrete Nvidia GPU when I tell it to for games and the like. My desktop that is nvidia-only though is another story, last time I tried I got significant cursor glitches after waking from sleep, the night light doesn’t work due to the lack of GAMMA_LUT like you mentionned. There were also all sorts of glitches with Blur my shell iirc
I have the laptop set to NVidia Dedicated mode, the integrated GPU is dormant at all times (verified with nvtop), so I don’t have any experiences with Optimus. I don’t use suspend, I turn it on in the morning, off in the evening.