I have a Thinkpad p14s G2 (AMD) that has a 4k screen.
I tried to change the grub resolution like this:
boot.loader.grub = {
extraConfig = ''
GRUB_CMDLINE_LINUX="amdgpu.backlight=0"
GRUB_GFXMODE=1024x768x32
GRUB_GFXPAYLOAD_LINUX=keep
GRUB_TERMINAL_OUTPUT="gfxterm"
'';
};
But it has no effect. I am missing something?