06-25-2021, 02:48 PM
(06-25-2021, 02:14 PM)thequailman Wrote: u-boot 2021.07.rc4 was recently added to experimental. Using this with a bullseye debootstrap, I get a graphical boot (including the u-boot bits) up to the EFI screen and then nothing after the system starts initing.
I remember during the early days of UEFI support in Debian (IIRC circa 2012 and right around kernel transitioning from 2.6.x to 3.x) there was a bug with, I think, proper support for either UGA or GOP, I don't remember. Probably GOP. It resulted in no output whatsoever until X11 kicked in. Eventually it got fixed though. Now since you're using UEFI, and AFAIK u-boot's UEFI implementation is not complete (see https://u-boot.readthedocs.io/en/v2021.0...ent-target), I wonder if you're hitting some kind of incomplete implementation of GOP or something else in u-boot?
That said, I should probably give u-boot 2021.07.rc4 a shot myself - I've been reluctant to switch to it from BSP u-boot and get an un-bootable system that I'd need to open up to un-brick, since I find that opening up PBP is always somewhat of a pain in the ass, even compared to the more recent ThinkPads.
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