RE: UEFI GOP: screen goes blank during boot after loader is finished

-----Original Message-----
From: owner-freebsd-virtualization_at_freebsd.org <owner-freebsd-virtualization_at_freebsd.org> On Behalf Of Warner Losh
Sent: 15 November 2018 02:57
To: Kyle Evans <kevans_at_freebsd.org>
Cc: FreeBSD Current <freebsd-current_at_freebsd.org>; Rodney W. Grimes <freebsd-rwg_at_pdx.rh.cn85.dnsmgr.net>; freebsd-virtualization_at_freebsd.org
Subject: Re: UEFI GOP: screen goes blank during boot after loader is finished

On Wed, Nov 14, 2018 at 4:00 PM Kyle Evans <kevans_at_freebsd.org> wrote:

> On Wed, Nov 14, 2018 at 4:55 PM Subbsd <subbsd_at_gmail.com> wrote:
> >
> > On Thu, Nov 15, 2018 at 1:33 AM Kyle Evans <kevans_at_freebsd.org> wrote:
> > >
> > > On Wed, Nov 14, 2018 at 4:30 PM Kyle Evans <kevans_at_freebsd.org> wrote:
> > > >
> > > > On Wed, Nov 14, 2018 at 4:23 PM Subbsd <subbsd_at_gmail.com> wrote:
> > > > >
> > > > > On Thu, Nov 15, 2018 at 1:05 AM Subbsd <subbsd_at_gmail.com> wrote:
> > > > > >
> > > > > > On Thu, Nov 15, 2018 at 12:21 AM Rebecca Cran <
> rebecca_at_bluestop.org> wrote:
> > > > > > >
> > > > > > > On November 14, 2018 at 2:18:04 PM, Subbsd 
> > > > > > > (subbsd_at_gmail.com)
> wrote:
> > > > > > >>
> > > > > > >>
> > > > > > >> My current host: FreeBSD 13.0-CURRENT r340319 and the 
> > > > > > >> problem
> is
> > > > > > >> still present.
> > > > > > >
> > > > > > > Rod was asking about the guest OS version, not the host though.
> > > > > > >
> > > > > > >
> > > > > >
> > > > > > I apologize, it seemed to me that I wrote earlier) Guest version:
> > > > > >
> https://download.freebsd.org/ftp/snapshots/amd64/amd64/ISO-IMAGES/13.0
> /FreeBSD-13.0-CURRENT-amd64-20181101-r339979-disc1.iso.xz
> > > > >
> > > > > Hm, it seems the problem is 'boot_serial' which is sets to YES 
> > > > > by
> default in gop
> > > > >
> > > > > set boot_serial=NO
> > > > > boot
> > > > >
> > > > > solve this issue
> > > >
> > > > Huh? This is perhaps going to be a stupid question, but where is 
> > > > boot_serial=YES getting set? Loader will not set it by itself 
> > > > and
> UEFI
> > > > doesn't respect /boot.config, so this must be explicitly set in 
> > > > /boot/loader.conf or /boot/defaults/loader.conf, but it's not 
> > > > clear
> to
> > > > me what's putting it there.
> > >
> > >
> http://src.illumos.org/source/xref/freebsd-head/usr.sbin/bhyveload/bhy
> veload.c#832
> > > is the only place I can see immediately that this might be 
> > > happening, but do UEFI boots go through bhyveload? I'm ignorant here.
> >
> > This is UEFI GOP methodvia bootrom/uefi-firmware, no bhyveload:
> >
> > bhyve -AHP -s 0:0,hostbridge -s 31:0,lpc -s 
> > 4:0,ahci-cd,/tmp/FreeBSD-13.0-CURRENT-amd64-20181101-r339979-disc1.i
> > so -c 1 -m 1024M -s 29,fbuf,tcp=0.0.0.0:5900,w=1024,h=768,wait -l 
> > bootrom,/usr/local/share/uefi-firmware/BHYVE_UEFI.fd freebsd1
> >
> > https://snag.gy/0MH7zU.jpg
> > https://snag.gy/kF5cxZ.jpg
> > https://snag.gy/htHMG0.jpg
> > https://snag.gy/vK1ALN.jpg
> > https://snag.gy/qKNPGU.jpg
>
> What does your /boot/loader.conf look like?
>

>What is the ConOut evifar look like? We set serial when the UEFI env says to do  so.

>Warner

I can confirm that 11.2-REL boots fine but 12.0-BETA4 goes blank just after the loader, using the exact same bhyve configuration. (This is on an 11.2 host)
A few lines are output just before going blank but I can't catch what they say.

I'm using the official ISO files with no other configuration so it does seem that 12.0 will currently not boot under UEFI-GOP bhyve.

I can check the efivars if someone lets me know how.

Matt
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