How to fix Additional Drivers in Ubuntu Cinnamon 20.04?

Question

ubuntu

The essence of the question is why the system does not find additional drivers for the video card?
Here is a screenshot:

Now the following drivers are used:

~$ glxinfo |grep -i opengl
OpenGL vendor string: Mesa/X.org
OpenGL renderer string: llvmpipe (LLVM 12.0.0, 256 bits)
OpenGL core profile version string: 4.5 (Core Profile) Mesa 21.0.3
OpenGL core profile shading language version string: 4.50
OpenGL core profile context flags: (none)
OpenGL core profile profile mask: core profile
OpenGL core profile extensions:
OpenGL version string: 3.1 Mesa 21.0.3
OpenGL shading language version string: 1.40
OpenGL context flags: (none)
OpenGL extensions:
OpenGL ES profile version string: OpenGL ES 3.2 Mesa 21.0.3
OpenGL ES profile shading language version string: OpenGL ES GLSL ES 3.20
OpenGL ES profile extensions:

Here is the video card:

~$ lshw -c video
WARNING: you should run this program as super-user.
*-display
description: VGA compatible controller
product: Pitcairn PRO [Radeon HD 7850 / R7 265 / R9 270 1024SP]
vendor: Advanced Micro Devices, Inc. [AMD/ATI]
physical id: 0
bus info: [email protected]:01:00.0
version: 00
width: 64 bits
clock: 33MHz
capabilities: vga_controller bus_master cap_list rom
configuration: driver=radeon latency=0
resources: irq:34 memory: e0000000-effffff memory:f7d00000-f7d3ffff ioport:e000(size=256) memory:c0000-dffff
*-display
description: Display controller
product: Xeon E3-1200 v2/3rd Gen Core processor Graphics Controller
vendor: Intel Corporation
physical id: 2
bus info: [email protected]:00:02.0
version: 09
width: 64 bits
clock: 33MHz
capabilities: bus_master cap_list
configuration: driver=i915 latency=0
resources: irq:33 memory:f7800000-f7bfffff memory:d0000000-dfffffff ioport:f000(size=64)
WARNING: output may be incomplete or inaccurate, you should run this program as super-user.

I recently installed the system. Should I focus on the lack of additional drivers? By installing this system on Virtual Box, additional drivers were found.

Answer 1

It seems like it turned out to install the amdgpu driver (it is now on the list):

01:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Pitcairn PRO [Radeon HD 7850 / R7 265 / R9 270 1024SP]
Subsystem: ASUSTeK Computer Inc. Radeon HD 7850
Kernel driver in use: radeon
Kernel modules: radeon, amdgpu

It can be seen that the radeon driver is used. Tried to switch to amdgpu in the following way:

1. In the file /etc/default/grub I found the line GRUB_CMDLINE_LINUX_DEFAULT
   
2. Added this to the end of the line: radeon.cik_support=0 amdgpu.cik_support=1 radeon.si_support=0 amdgpu.si_support=1 The result is
   :
   GRUB_CMDLINE_LINUX_DEFAULT="quiet splash resume=UUID=f4403476-c5c8-4004-b799-fc3cfc85dfa7 radeon.cik_support =0 amdgpu.cik_support=1 radeon.si_support=0 amdgpu.si_support=1"
   
3. Updated grub sudo update-grub
   
4. Rebooted
   

As a result, when trying to see which driver is being used, the line Kernel driver in use: disappears.
What am I doing wrong?