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Thread: Flickering colored bar at bottom of screen with nvidia-340 driver

  1. #1
    Join Date
    Jan 2018
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    Question Flickering colored bar at bottom of screen with nvidia-340 driver

    OS: Ubuntu Gnome 16.04 LTS
    Computer: MacBook Pro (13-inch, Mid 2009)
    GPU: Geforce 9400M

    The open-source driver works fine, with no apparent graphical issues, but it's slow. I've installed the nvidia-340 driver, which is faster, but I have some graphical issues.

    When clicking the "Activities" button in the top-left corner, bringing up the Activities Overview, there's a green bar (almost as thick as the top bar), that appears and disappears, and is especially flickery when moving the mouse over different GUI elements.

    From the login/unlock screen, where you type your password, moving the mouse around makes a purple bar flicker.

    I've tried to take a screenshot, but every time I do, it disappears. Here's a photo of the first one: https://i.imgur.com/LO4YlIj.jpg

    Also, tatertots from #ubuntu on freenode told me to include these logs relevant to my system: http://termbin.com/tk4e http://termbin.com/g584 http://termbin.com/yjab http://termbin.com/oxt2
    Last edited by quenz; January 25th, 2018 at 06:02 AM. Reason: Included another terminal paste

  2. #2
    Join Date
    Jan 2018
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    I have the same exact problem, I tried changing the driver to nvidia-304 driver and I had trouble clicking on things...

    My best results were with this driver 340.104-0ubuntu0.16.04.1 ,but still sometimes I would get a lot of flickering when using the laptop heavily...
    Last edited by jeremy31; January 24th, 2018 at 12:30 PM.

  3. #3
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    Jan 2018
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    Re: Flickering colored bar at bottom of screen with nvidia-340 driver

    Try changing the shell theme to the default or none. Somehow that helps after you login, and during gnome-session... flickering stops completely. I wander if it is a gtk process that is a problem problem, the reason I think that is that the flickering is not consistent.

  4. #4
    Join Date
    Jan 2018
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    Re: Flickering colored bar at bottom of screen with nvidia-340 driver

    Please keep in mind I am using the Dash to Panel Extension...

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