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

From: Subbsd <subbsd_at_gmail.com>
Date: Thu, 15 Nov 2018 00:18:04 +0300
On Wed, Nov 14, 2018 at 6:52 PM Rodney W. Grimes
<freebsd-rwg_at_pdx.rh.cn85.dnsmgr.net> wrote:
>
> > On Wed, Nov 14, 2018 at 3:49 PM Kyle Evans <kevans_at_freebsd.org> wrote:
> >
> > > Good, good, so the loader <-> kernel transition would appear to be
> > > intact and information appears good at first blush. If you don't have
> > > time to dig into this, I'll try poking at it this weekend, but it
> > > looks to be either kernel problem or VNC server.
> >
> > FreeBSD 11.{1,2} and various Linux distros boot fine with UEFI GOP in
> > the same time, the problem is only with FreeBSD 12-ALPHA+.
> > Therefore it does not look like VNC server issue.
>
> Lets make sure this is not the invalid instruction trap (CLFLUSH)
> that has already been fixed by BETA3.  Is everyone infact using
> BETA3 or later as a guest?   We know of and have fixed this other
> bug and I want to make sure we are not chassing a red hearing.


My current host: FreeBSD 13.0-CURRENT r340319  and the problem is
still present. As I recall, I first encountered this problem when
FreeBSD-CURRENT (12) moved to the ALPHA-1 state. At least a month
before the ALPHA-1, everything worked fine. At this time, the
bootloader was changed to work with lua (and the distinguishing
feature is that during this transition the boot menu lost color in the
UEFI GOP mode).
So, the first thing I thought was that it was related to the lua based
menu. Now we know that it is not. However, the root of the problem
lies at this time.
Received on Wed Nov 14 2018 - 20:18:18 UTC

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