Can't get my Debian laptop to use my Radeon 520 Mobile graphics card

[Martin <mb0087@gmail.com>]

Hello everyone,

my laptop has two graphic devices. According to my hardware probe it
does not utilize the actual graphic card or at least something seems
wrong with it. I tried installing additional driver packages:
xserver-xorg-video-amdgpu  mesa-va-drivers but it did not change
anything it seems. From other probes I see linux does support it on
other laptops. I wonder what am I missing?

https://linux-hardware.org/?probe=31e05fe1a9

lspci -nnk | grep -i vga -A3 | grep 'in use'
        Kernel driver in use: i915

lspci -vnnn |  grep VGA
00:02.0 VGA compatible controller [0300]: Intel Corporation HD
Graphics 620 [8086:5916] (rev 02) (prog-if 00 [VGA controller])

inxi -Fxz

Graphics:  Device-1: Intel HD Graphics 620 vendor: Hewlett-Packard
driver: i915 v: kernel bus ID: 00:02.0
           Device-2: AMD Sun XT [Radeon HD 8670A/8670M/8690M / R5 M330
/ M430 / Radeon 520 Mobile] vendor: Hewlett-Packard
           driver: radeon v: kernel bus ID: 01:00.0
           Display: x11 server: X.Org 1.20.8 driver: intel resolution:
1920x1080~60Hz, 1920x1080~60Hz
           OpenGL: renderer: Mesa Intel HD Graphics 620 (KBL GT2) v:
4.6 Mesa 20.0.4 direct render: Yes

 glxinfo | grep OpenGL
OpenGL vendor string: Intel
OpenGL renderer string: Mesa Intel(R) HD Graphics 620 (KBL GT2)
OpenGL core profile version string: 4.6 (Core Profile) Mesa 20.0.4
OpenGL core profile shading language version string: 4.60
OpenGL core profile context flags: (none)
OpenGL core profile profile mask: core profile
OpenGL core profile extensions:
OpenGL version string: 4.6 (Compatibility Profile) Mesa 20.0.4
OpenGL shading language version string: 4.60
OpenGL context flags: (none)
OpenGL profile mask: compatibility profile
OpenGL extensions:
OpenGL ES profile version string: OpenGL ES 3.2 Mesa 20.0.4
OpenGL ES profile shading language version string: OpenGL ES GLSL ES 3.20
OpenGL ES profile extensions:

uname -a && lsb_release -dr
Linux lemon 5.4.0-4-amd64 #1 SMP Debian 5.4.19-1 (2020-02-13) x86_64 GNU/Linux
Description:    Debian GNU/Linux bullseye/sid
Release:        unstable