Liarxar Yes, likely a bluetooth keyboard/mouse may not work correctly in this scenario. And it’s Ctrl+Alt+F1 (or F2, F3, F4, …, F9) to change to a different virtual console TTY interface and then login on that terminal and use the command:
$ sudo cat /sys/kernel/debug/dri/1/amdgpu_gpu_recover
Alternatively, you can simply try to disconnect the display connection cable/piug (HDMI, DP or USB-C) and then reconnect it. If the system is still working it should recover the display output normally on the screen and you’ll be able to resume work.