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I have just installed Ubuntu 20.04LTS on my laptop and I face this problem: After log into my user as "Ubuntu System" I can only see desktop and if I tried to open any app or do any action system freezes and nothing happen, but if I logged in as "Wayland System" I can use show and use some apps, But if I tried to open apps like "Firefox, Chromium or another apps" The same problem happen.

Update: I tried to solve it by doing these steps:

  • Changing "grub" GRUB_CMDLINE_LINUX_DEFAULT Parameter by adding nomodeset after quiet splash, Finally line changed to:

    GRUB_CMDLINE_LINUX_DEFAULT="quiet splash nomodeset"

Now I can use Ubuntu normally but I lost the "brightness controller" and I cannot change brightness level. I think that Graphics card isn't defined, how to solve this problem?

Note: VGA compatible controller: Intel Corporation Haswell-ULT Integrated Graphics Controller

Hazem Hossam
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1 Answers1

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Problem could be with video driver /GPU. Pls mention your PC's hardware configurations. If you've Nvidia then try switching to intel's one. Press ctrl + alt + f2 then login and then issue the following commands Check which graphics is running:

prime-select query

if it shows Nvidia etc then Switch to intel-

sudo prime-select intel

if none of above works, then try uninstalling Nvidia-

sudo apt purge nvidia-*

Reboot

if problem persists try option1 here : askubuntu.com/a/937727/905106

Hacke
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