Black screen after start

[keekkenen]

I use kvm switcher for pc (gentoo) and laptop (win).
case 1: kvm switched to using a laptop and after turning on the PC, after that switched to using pc then I saw a black screen.
case 2: If kvm switched to using a pc and after turning on pc - no problem.

It's not a big problem, but not convenient.

Please, everyone give me direction on where to find the problem.
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7950x3d / x670e MSI Tomagawk / Sapphire RX 7800XT 16Gb / G.Skill 64Gb 5600 / A-Data Legend 960 2Tb (x2), A-Data SX8200PNP 256Gb