I recently had to look into modelines because of one issue related to high frequency refresh rate display and amdgpu causing some blinking due to VRAM reclockin

I recently had to look into modelines because of one issue related to high frequency refresh rate display and amdgpu causing some blinking due to VRAM reclocking. Really didn't expect that ever to come up. In the process I discovered that KWin doesn't yet support setting video modes using modelines in the Wayland session at present.