0

I followed this manual in hope that after reboot cinnamon's software rendering mode would stop to annoying at my screen. But not helped.

I did:

$ cat /etc/apt/sources.list
deb http://httpredir.debian.org/debian/ stretch main contrib non-free
$ sudo apt-get install firmware-linux-nonfree libgl1-mesa-dri xserver-xorg-video-ati
Reading package lists... Done
Building dependency tree       
Reading state information... Done
libgl1-mesa-dri is already the newest version (13.0.6-1+b2).
xserver-xorg-video-ati is already the newest version (1:7.8.0-1+b1).
firmware-linux-nonfree is already the newest version (20161130-3).
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
$ xrandr --listproviders
Providers: number : 0

After reboot nothing changed. I have low resolution and software redering mode on.

UPD

xserver-xorg-video-radeon is also already installed

UPD 2

$ cat /var/log/Xorg.0.log | grep EE
    (WW) warning, (EE) error, (NI) not implemented, (??) unknown.
[  1465.908] (EE) open /dev/dri/card0: No such file or directory
[  1465.908] (EE) open /dev/dri/card0: No such file or directory
[  1465.908] (EE) Screen 0 deleted because of no matching config section.
[  1465.910] (EE) AIGLX: reverting to software rendering

xserver-xorg-video-radeon is also already installed

0

I'd use the radeon driver for a radeon.

sudo apt-get install xserver-xorg-video-radeon

And then of course there used to be the proprietary drivers, fglrx, but I'm not sure they're kept up to date. Tried last weekend and they seemed to be seriously outdated.

  • This package is also already installed. No effect – Vassily Vorobyov Jun 8 '18 at 7:22
  • Sorry, I must have missed it in your question. – Gerard H. Pille Jun 8 '18 at 7:23
  • Updated question – Vassily Vorobyov Jun 8 '18 at 7:26
  • Any errors in /var/log/Xorg.0.log. Lines marked "(EE)". What processor does your notebook have? – Gerard H. Pille Jun 8 '18 at 7:29
  • updated question with errors of file that you requested – Vassily Vorobyov Jun 8 '18 at 7:33
0

You will need to update the kernel, firmware-amd-graphics and mesa from backports. See https://www.guyrutenberg.com/2018/11/01/getting-radeon-rx-550-to-work-under-debian-stretch/

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