Date: Fri, 5 Sep 2014 13:30:19 -0400 From: Glen Barber <gjb@FreeBSD.org> To: John Nielsen <lists@jnielsen.net> Cc: FreeBSD Current <current@freebsd.org> Subject: Re: UEFI display frozen on Retina MacBook Pro Message-ID: <20140905173019.GF36287@hub.FreeBSD.org> In-Reply-To: <9C939A39-79DA-44A7-8C8C-48B6423B50D4@jnielsen.net> References: <9C939A39-79DA-44A7-8C8C-48B6423B50D4@jnielsen.net>
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On Fri, Sep 05, 2014 at 11:20:21AM -0600, John Nielsen wrote:
> I have a "MacBook Pro Retina, Mid 2012" (MacBookPro10,1) on which I'd lik=
e to be able to boot FreeBSD from an external USB drive. For testing I've b=
een using the mini-memstick images from the -CURRENT snapshots, most recent=
ly the one from 20140903.
>=20
> I am able to select "EFI Boot" on the USB device from the Mac's boot menu=
, and it does _something_, but the screen never changes--the image of the b=
oot menu is displayed indefinitely. I think it is actually booting since th=
ere is drive activity and the caps lock key indicator starts working a few =
seconds in, but the screen just stays the same. Thinking the resolution of =
the Retina display may have been an issue, I tried booting with it disabled=
(lid closed) and an external monitor and keyboard. The result was the same=
--Mac boot menu frozen on the external display.
>=20
> Is there anything I should try to troubleshoot or debug this issue? Anyth=
ing else I should include in a PR? I can test patches if needed (probably a=
fter building an image including the patch from a VM).
>=20
To be clear, which boot menu do you see? If you see the FreeBSD loader
menu, escape to the loader prompt and try:
set kern.vty=3Dvt
set hw.vga.textmode=3D1
boot
I am a bit unclear under which conditions 'hw.vga.textmode=3D1' is
required, though.
Glen
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