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Date: Sun, 09 Apr 2023 23:26:46 +0200
From: qwx@sciops.net
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Subject: Re: [9front] displayport thinkpad x230 external monitor black screen
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> From: Romano <unobe@cpan.org>
> Date: Sun, 09 Apr 2023 06:31:09 +0000
> Subject: [PATCH] [PATCH] DP 1.2 on igfx; EDID wrapping; VGA display connections
> 
> 
> 	This patch more fully implements the training patterns for DP 1.2 per the spec,
> 	which then allows more monitors to successfully train and therefore connect. In
> 	my case it was an LG 34UM68-P.
> 
> 	Secondly, this fixes EDID shifting to work with a wider range of values, notably
> 	ones which wrap.
> 
> 	Lastly, a small correction in vesa.c as to which bits are used to determine
> 	available connections.

Wow, great work!  I only skimmed through your patch, and I do have
some comments, but this is awesome.  I don't have access to any
displayport monitors here to try that stuff myself, but I'll look over
your patch as soon as I can, though perhaps others already have/will.
I'll try to scavenge some equipment at work.

Prost,
qwx