Re: NetBSD still fails to boot on a MacBook7,1

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At Wed, 2 Apr 2025 10:00:21 +0300, Andrius V <[email protected]> wrote:
Subject: Re: NetBSD still fails to boot on a MacBook7,1
>
> I believe it is a good idea to rebuild kernel without nouveau and
> nouveaufb support and try to boot it to fully rule out nouveau
> influence.
> (that's seems to be one of the differences between netbsd-7 and
> netbsd-8, nouveau/nouveaufb were disabled by default)

I finally got around to trying this, but with no luck.  Video output
from the kernel still looks "torn".

I would have been surprised if nouveau(4) was causing problems at boot
time though -- this is the initial output from wscons, not X11.

> Searching around, there might be some issues with the specific mac
> model nvidia card
> e.g. https://wiki.debian.org/InstallingDebianOn/Apple/MacBookPro/7-1#Black_screen_fix_.28EFI_mode.29
> but myself I can't draw any conclusions out of it, or if it is
> affecting NetBSD and your observed issue in any way.

I think I remember seeing that before too, but that's with starting X11,
not with the initial console video output.

On the other hand, who knows?  Maybe the PCI-E registers need to be set
correctly for wscons to get the video right too?

However the boot code only knows one "video mode" (according to "gop"),
so, hmmmm....

--
					Greg A. Woods <[email protected]>

Kelowna, BC     +1 250 762-7675           RoboHack <[email protected]>
Planix, Inc. <[email protected]>     Avoncote Farms <[email protected]>

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