Re: Garbled installer screen output on 2010 Macbook Air using 11-RC2

[Martin Husemann <martin%duskware.de@localhost>]

On Wed, Apr 01, 2026 at 12:14:59PM +0100, requiem. wrote:
> After the initial "boot count" I immediately end up at the attached screen, where it hangs - or at least I cannot see further output.

The picture shows nearly readable green kernel output, but the pixel stride
obiviously is off by a small amount, so each line on the screen is starting
a few pixels shifted to the right.

The total width seems to be wrong too.

So the dumb framebuffer attached gets proper start address but bad image
parameters from the bootloader/UEFI.

Can you interrupt the boot process early (when it counts down the boot timer)
and issue a

	gop

command? This should tell us what options the bootloader thinks are available
and what it would pick by default.

Martin