OK, I found your post about kernels/headers/dkms. I installed the headers for my kernels (6.5, 6.6, and 6.7), and reinstalled TUXEDO Control Center and the TUXEDO drivers.
One difference stands out: Control Centre now shows more information about the CPU and other options have become available (keyboard back-light and battery charging options, for example).
However, I still can’t change the screen resolution.
onevpl yes, onevpl-intel-gpu no. I installed it.
Output of pacman -Qs onevpl:
local/libvpl 2.10.1-1
Intel Video Processing Library
local/onevpl-intel-gpu 24.1.1-1
oneVPL runtime implementation for Intel GPUs (Tiger Lake and newer)
I restarted the computer and, as before, I still can’t change the screen resolution.