I have the same issue on a Thinkpad X395: with power plugged in, everything boots fine. However, on battery it will only boot to a black screen once the display manager is started.
Plugging the power in, booting up and unplugging the power once the login-screen appears does work, however. Also, using `nomodeset` as kernel option works, but in that case, amdgpu won't be loaded (I assume some generic VESA driver is used in that case).
I have the same issue on a Thinkpad X395: with power plugged in, everything boots fine. However, on battery it will only boot to a black screen once the display manager is started.
Plugging the power in, booting up and unplugging the power once the login-screen appears does work, however. Also, using `nomodeset` as kernel option works, but in that case, amdgpu won't be loaded (I assume some generic VESA driver is used in that case).