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Date:      Mon, 18 Mar 2019 05:09:31 +0700
From:      Eugene Grosbein <eugen@grosbein.net>
To:        Konstantin Belousov <kostikbel@gmail.com>, Warner Losh <imp@bsdimp.com>
Cc:        FreeBSD-STABLE Mailing List <freebsd-stable@freebsd.org>, Leon Christopher Dietrich <doralitze@chaotikum.org>
Subject:   Re: hw.vga.acpi_ignore_no_vga=1 for installation media
Message-ID:  <11d5849a-848d-5034-8062-7e07cd6c8d3f@grosbein.net>
In-Reply-To: <20190317173421.GN96870@kib.kiev.ua>
References:  <mailman.13.1552824000.329.freebsd-stable@freebsd.org> <ccfb7722-3703-2995-641d-256990a1c57d@chaotikum.org> <CANCZdfqd0C=vknLi9Yrr=odLwokg-oSmSw5XfmDB%2B=CdkhPK2Q@mail.gmail.com> <20190317173421.GN96870@kib.kiev.ua>

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18.03.2019 0:34, Konstantin Belousov wrote:

> Can anybody provide an example of machine where the flag is set but VGA
> works ?  For me, it is set on headless NUC when there is no monitor
> attached, and then BIOS does not configure framebuffer at all.

http://freebsd.1045724.x6.nabble.com/vt-4-related-hang-of-11-2-td6299125.html
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=230172
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=229235

> > So the proposal is about reversing the set of broken machines, but only
> in installer ?  In other words, if it worked for installer, the installed
> system would be broken (again) ?

VGA-based installation session won't event start unless this is fixed.

It should be easy to make installer generate the knob for target machine
if installer sees wrong ACPI flag with working VGA hardware.




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