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Date:      Fri, 13 Jan 2017 16:11:52 -0700
From:      Alan Somers <asomers@freebsd.org>
To:        "Ngie Cooper (yaneurabeya)" <yaneurabeya@gmail.com>
Cc:        Ed Maste <emaste@freebsd.org>, FreeBSD CURRENT <freebsd-current@freebsd.org>
Subject:   Re: vt(4) chops off the leftmost three columns
Message-ID:  <CAOtMX2gBn8iJiCZrzgDCSxBhVN%2B0rjWoXs0YYSNdCLnQwkgAYw@mail.gmail.com>
In-Reply-To: <96CA08DF-582A-4405-9E65-B19230EA37DA@gmail.com>
References:  <CAOtMX2hg%2B-7F10Dx01_0_EzH_Q_eE2J%2B1wWjAiEO7f56ofCLgQ@mail.gmail.com> <CAPyFy2AAWeD-wMCR3aKG8mjPyn_4%2BMzGYBZnYYfddjtHTgDgQQ@mail.gmail.com> <96CA08DF-582A-4405-9E65-B19230EA37DA@gmail.com>

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On Thu, Jan 12, 2017 at 7:31 PM, Ngie Cooper (yaneurabeya)
<yaneurabeya@gmail.com> wrote:
>
>> On Jan 12, 2017, at 18:13, Ed Maste <emaste@freebsd.org> wrote:
>>
>> On 12 January 2017 at 18:50, Alan Somers <asomers@freebsd.org> wrote:
>>> I've seen three separate machines where FreeBSD11's vt(4) driver chops
>>> off the leftmost three columns of the screen.  Rendering simply starts
>>> at the beginning of the fourth column.  In all cases, setting
>>> "kern.vty=3Dsc" corrects the problem.
>>
>> Or try setting hw.vga.textmode=3D1
>>
>> Did you observe this with IPMI redirected video or an attached monitor
>> (or a combination)?
>
> I=E2=80=99ll have to double check, but I=E2=80=99m pretty sure I=E2=80=99=
ve seen this with my Haswell box (Escher) over VGA using my projector.
> Thanks,
> -Ngie

I take it back.  The first three columns _are_ rendered, but they
don't show up on some monitiors.  It's as if those monitors require a
minimum amount of overscan on the left side of the screen, and vt(4)
doesn't provide enough.  Can that be tuned?
-Alan



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