vt(4) chops off the leftmost three columns

[Adrian Chadd]

It depends(tm). I think the VT code just does "640x480x4bpp" and lets
the BIOS sort it out. A lot of things don't cope well with 640x480
these days - they try autodetecting picture edges, but a black border
makes that very difficult.


-adrian


On 14 January 2017 at 08:57, Matthias Andree <matthias.andree at gmx.de> wrote:
> Am 14.01.2017 um 00:11 schrieb Alan Somers:
>> 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?
>
> Once upon a time, I've seen similar things on Linux, but with fewer
> pixels offset, when switching framebuffer drivers - back then, the
> scanning-VGA-timing was an issue. Is there any way to tweak the row and
> column timings, with blank periods, viewport offsets and thereabouts?
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