Re: Radeon HD 5770

[Michel Dänzer <michel@daenzer.net>]

On 2021-01-31 7:47 p.m., Johannes Brakensiek wrote:
> I checked the xorg config - there is none. I blacklisted the nouveau 
> module, made a new ramfs, installed grub and so on. But the boot process 
> hangs at the point where the radeon module is loaded. With „nomodeset“ 
> and having the NVidia card connected it gives the error message about 
> missing UMS/KMS at the point (and boots). So I’d expect driver 
> loading/mode setting to happen there, but it does not.
>
> Any helpful idea out there?

Is the firmware-amd-graphics / firmware-linux-nonfree package installed?

If yes, I'd suggest booting with

 modprobe.blacklist=radeon

on the kernel command line (this will prevent the radeon kernel driver 
from getting loaded automatically). Then once the system is booted up, 
log in via SSH and run

 sudo modprobe radeon

This way you should be able to capture dmesg output from loading the 
radeon driver.


--
Earthling Michel Dänzer               |               https://redhat.com
Libre software enthusiast             |             Mesa and X developer