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Thread: Display issues after upgrade to 20.04

  1. #1
    Join Date
    Aug 2020
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    Display issues after upgrade to 20.04

    I have two issues after upgrading ubuntu (Ubuntu Studio) from 18.xx to 20.04 on my laptop.

    The first one is that my display is distorted. When I first log-in the background displays correctly, but as soon as I click on any of the top menu bar items the screen becomes distorted.

    distorted.display.jpg

    If I connect an external monitor (HDMI or VGA) the display is no longer distorted.

    If I try to save the settings when I do connect the monitor, the display becomes distorted on both monitors when I click Apply.

    The second issue is that I do not see an option to extend the displays - this could be due to my inexperience with ubuntu - I've used other flavours of linux in the past, but have been satisfied for the most part with Ubuntu Studio.

    display-options.png

    I have seen reports that there are issues with AMD, my laptop has an A12 AMD label on it. I did try the recommendation of using the following command: xfconf-query -c xfwm4 -p /general/vblank_mode -t string -s "glx" --create
    The command did not improve the issue.

    Any help would be greatly appreciated.

  2. #2
    Join Date
    Aug 2020
    Beans
    2

    Re: Display issues after upgrade to 20.04

    Quote Originally Posted by trmcdonald View Post
    I have two issues after upgrading ubuntu (Ubuntu Studio) from 18.xx to 20.04 on my laptop.

    .
    The issue got worse, but after using CTRL-ALT-F2 to get to a terminal I rebooted and the issue resolved itself.
    Perhaps I needed to reboot after sending this command: xfconf-query -c xfwm4 -p /general/vblank_mode -t string -s "glx" --create

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