Timing issue: Stuck at black screen before login-screen - Restart of SDDM fixes it

[megavolt]

Hello @exetico

Your problem behaves like the “timing issue”. Meaning: SSDM loads fast, but does not wait for the gpu to become ready. Therefore it crashes because no GPU is ready. Seems to be in the last weeks a common problem here with hybrid gpus.

@exetico

Graphics:  Device-1: Intel UHD Graphics 630 driver: vfio-pci v: 0.2 
           Device-2: Advanced Micro Devices [AMD/ATI] Navi 10 [Radeon RX 5600 OEM/5600 XT / 5700/5700 XT] driver: amdgpu 
           v: kernel 

However, to solve this, this could be done:

Still booting to blank screen

Looks like a timing issue… make the drivers load very early: Replace MODULES=() with: MODULES=(amdgpu nvidia) at /etc/mkinitcpio.conf Then run sudo mkinitcpio -P to update the initramfs. Reason of this is that the driver scheduled late and therefore the display-manager does not start at first time when switching from basic video mode to the graphical mode

The module for intel is i915 and for amd amdgpu.

Hope it helps