Low resolution desktop despite high resolution display with nvidia

[suse_paul]

sorry, opened this new thread accidentally.
please look here:

Low resolution with dedicated (nvidia) GPU

when I set BIOS to boot with dedicated/nvidia GPU instead of dynamic, the resulting desktop (KDE) looks low resolution, despite the display has high resolution. [snv] with BIOS GPU set dynamic, it boots into high resolution desktop. how can I change the desktop resolution?