Graphical glitch after waking from sleep

[cscs]

@HardCode4All

╰─> df -T /var/tmp
Filesystem     Type  1K-blocks     Used Available Use% Mounted on
/dev/nvme0n1p3 btrfs 524288000 59024600 463944712  12% /var/tmp

Hm.

• The video memory contents are by upstream default saved to /tmp, which is a tmpfs. NVIDIA recommends using an other filesystem to achieve the best performance. This is also required if the size is not sufficient for the amount of memory. Arch Linux thus sets nvidia.NVreg_TemporaryFilePath=/var/tmp by default on supported drivers.
• The chosen file system containing the file needs to support unnamed temporary files (e.g. ext4 or XFS) and have sufficient capacity for storing the video memory allocations (i.e. at least 5 percent more than the sum of the memory capacities of all NVIDIA GPUs). Use the command nvidia-smi --query-gpu=memory.total --format=csv,noheader,nounits to list the memory capacities of all GPUs in the system.

So;

nvidia-smi --query-gpu=memory.total --format=csv,noheader,nounits | paste-cachyos

And you might see this thread;

(KDE) Taskbar frozen after waking from sleep

Ok .. I’m no expert in BTRFS .. but from my digging it appears that while it supports unnamed temporary files it is advisable to disable CoW (Copy on Write) for the directory they would be written into. So I might suggest apply the following; sudo chattr +C /var/tmp References:

I also note SDDM and a lot of permissions problems?

PS.

You also appear to have BIOS updates available.