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Thread: Weird X behavior after upgrading to 11.4

  1. #1

    Default Weird X behavior after upgrading to 11.4

    Hi,
    This is my first post here. I never needed any kind of help with 11.3, maybe due the fact I installed it several months after its release. With the new 11.4 release I noticed a couple strange things:
    - After starting certain applications (most common is LibreOffice) the entire desktop gets pixelated and unusable.
    - The screen blinks randomly.
    I'm using a Asus Motherboard with an ATI Radeon X1200 Series integrated graphic card.
    What can I do? I tried to find an answer using the search function but didn't find anything.
    Thank you very much in advance,
    Luis Pablo

  2. #2
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    Default Re: Weird X behavior after upgrading to 11.4

    Something like this other report?

    Display flickers unusably with 11.4 installation

  3. #3

    Default Re: Weird X behavior after upgrading to 11.4

    Something similar to that report but the most strange thing is the relation between this bug and certain apps like LibreOffice (more specifically LibreOffice Calc). I tried the nomodeset solution before posting and I tried again in order to share the output:
    Failed services in runlevel 5: vboxadd vmtoolsd
    Skipped services in runlevel 5: nfs cifs
    With the "nomodeset" addition I'm unable to start runlevel 5.

  4. #4

    Default Re: Weird X behavior after upgrading to 11.4

    Also I was not able to find System Settings >> Startup and Shutdown >> Service Manager >> Disable 'Display management change monitor'
    The most similar thing I found was 'Quick X Display Manager'. Will this solve the issue?

  5. #5
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    Default Re: Weird X behavior after upgrading to 11.4

    It's under KDE System Settings > Advanced > Service Manager. Might be somewhere else in GNOME.

    AFICT that Display management change monitor enables the system to detect when monitors are plugged and unplugged, or a Fn key is used to switch monitors. I don't believe it touches the heart of the problem. But I don't have any answers, I'm just collecting more evidence.

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