[DragonFlyBSD - Bug #3167] UEFI boot hangs right after initializing UEFI framebuffer

[bugtracker-admin at leaf.dragonflybsd.org]

Issue #3167 has been updated by mneumann.


I've seen similar problems when I tried a very new laptop a few weeks ago. 

I am not quite sure but I am assuming the problem is that your GPU is too recent and not supported by our drm stack, and as such it cannot attach early at boot time and that's why you don't see a system console... but then, it should actually work without loading a drm module, plain old text console...



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Bug #3167: UEFI boot hangs right after initializing UEFI framebuffer
http://bugs.dragonflybsd.org/issues/3167#change-14419

* Author: mneumann
* Status: Resolved
* Priority: Normal
* Target version: 6.2
* Start date: 2019-01-09
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This happens on a recent Tuxedo laptop. See attached screenshot.

I have come up with a working (but hacky) patch:

https://www.dragonflybsd.org/~mneumann/patch-fb-machdep.c

After patching, if I set loader tunable sc.probe_early=1 then it correctly boots.

---Files--------------------------------
IMG_20181126_181023.jpg (1.34 MB)


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