Works just fine (Even without that parameter) on something that has a direct HDMI cable, though. (TV)

> Message: 6
>Date: Tue, 18 Aug 2020 16:23:47 -0700
> From: Aaron Jones <retro64xyz@gmail.com>
> To: plugaz@codezilla.xyz, Main PLUG discussion list
> <plug-discuss@lists.phxlinux.org>
>Subject: Re: KMS but AMDGPU And Black Screen
> Message-ID: <6B7D5942-0F2F-4DAE-A54A-19215718DCF2@gmail.com>
> Content-Type: text/plain; charset="utf-8"

>
> https://bugzilla.redhat.com/show_bug.cgi?id=1594488
>
> Set amdgpu.dc=0 in bios and it will work but without hdmi sound.