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globetrotterdk
Asked: 2020-05-09 00:51:24 +0800 CST

Kubuntu 20.04 and ubuntustudio-installer problem at boot

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The subject describes the situation relatively well. New install of Kubuntu 20.04 on a tower computer with an Asus Prime (Z390-a) motherboard. The process using the ubuntustudio-installer worked fine. I have used the installer before, however I added more groups this time, and have never used the installer on this computer.

After a reboot, the computer has since refused to complete a boot. However, I am able to Ctrl Alt F3 to get a terminal, login as user, run startx and get an X session without problems. I can provide more information if I know which logs to look in at /var/log.

On a hunch, I booted from the generic kernel, which I had no problems with before, and everything works fine. So, as a kludge, I have set Grub2 to boot the generic kernel as default until I can get sorted out what ever is wrong with the low latency kernel...

boot kubuntu ubuntu-studio

1 Answers

  1. I'm using the proprietary Nvidia driver, and ran into the exact same problem. I also started with a fresh Kubuntu from the ISO, followed by the ubuntustudio-installer.

    I found that linux-modules-nvidia-390-5.4.0-37-generic was installed, but linux-modules-nvidia-390-5.4.0-37-lowlatency, linux-modules-nvidia-390-generic and linux-modules-nvidia-390-lowlatency were not.

    First check what's installed:

    dpkg --get-selections | grep "linux-modules-nvidia"

    Then, install the corresponding non-version-specific metapackages for generic and lowlatency, which will pull in the proper dependencies. In my case:

    sudo apt install linux-modules-nvidia-390-generic linux-modules-nvidia-390-lowlatency

    (You may need to replace 390 with some other number.)

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