(In reply to Gerhard Lorbeer from comment #20) > Same Hardware (UHD Graphics 630). One UHD Monitor attached via DP. > Kernel 5.10.3-1.2-X86_64 no problems. > Since update today to 5.10.4-1.1-X86_64 Monitor goes black after a time. > No reaction on mouse or keyboard. > Same behaviour in console-mode (Strg-Alt-F1). > > My workaround to boot in old kernel 5.10.3 kernel 5.10.5 fixes my problem thanks