Re: HEADS UP: Merging drm update (Lenovo X230 mode switch issue in UEFI mode only, BIOS works)

[Taylor R Campbell <riastradh%NetBSD.org@localhost>]

> Date: Fri, 31 Dec 2021 11:30:32 +0100
> From: Matthias Petermann <mp%petermann-it.de@localhost>
> 
> - When I boot current in UEFI mode, after the mode switch it only 
> displays a blank screen with a white background. After that, within a 
> few seconds, a kind of randomly structured dark spot develops from the 
> center of the screen, which then stretches to the edge of the screen [1].

Can you get dmesg from the previous boot if you reboot back in BIOS
mode?  Or can you ssh in and get it, or get it over a serial console?