Did you get this resolved? 

I often use nomodeset when setting up my systems initially, until I can
turn off the red hat graphical boot, but I've never run a script to
install drivers, are you trying to install the official AMD graphics
drivers as opposed to the amdgpu open source drivers? 

On 2020-08-16 15:03, Seabass via PLUG-discuss wrote:

> Recently setup a new computer. 
> Trouble is, every time I try to boot (popOS, about to try Ubuntu) it is just a black screen. 
> 
> So I get to the boot loader and add the parameter "nomodeset". 
> This is great, until I run AMD's script to install the drivers. They will cancel saying it uses KMS. But I can't boot without that being off initially...  
> anyone have any suggestions? 
> ---------------------------------------------------
> PLUG-discuss mailing list - PLUG-discuss@lists.phxlinux.org
> To subscribe, unsubscribe, or to change your mail settings:
> https://lists.phxlinux.org/mailman/listinfo/plug-discuss