Ubuntu – Graphics problems with AMD Athlon 3000G and MSI B450M


I'm new to Ubuntu. I just bought a new PC for my son and we want to dual-boot Windows 10 and Ubuntu 20.04.

The PC has an Athlon 3000G with a MSI B450 and a m.2 SSD.

When I log in to Ubuntu, there is a problem with the desktop. I also can't seem to get amdgpu-pro from AMD's page, so I'm a bit lost.

It is almost impossible to navigate on the Ubuntu desktop due to the graphics issue.

I have also tried change the screen resolution with xrandr -s 800x600 but this did not solve the problem, and might have made it worse: The native resolution for the screen is 1440×900.

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Best Answer

  • My previous answer prevents the amdgpu driver to load .
    On my Lenovo Ideapad L340-17API , it freeze desktop after a few minutes.
    Correct answer is from Failed to put a second screen Xubuntu 20.04 and ArchWiki: Ryzen

    • Edit again grub.conf to remove previously added "nomodeset" parameter, then run sudo update-grub
    • Edit /usr/share/X11/xorg.conf.d/xx-amdgpu.conf
    • Add the line Option "TearFree" "true" just before the last line:
    Section "Device"  
         Identifier "AMD"    
         Driver "amdgpu"  
         Option "TearFree"  "true"  

    Save and reboot.

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