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Thread: Screen tearing

  1. #1
    Join Date
    Jun 2009
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    33

    Screen tearing

    I'm using the open source ati driver in Xubuntu and everything works flawlessly except i'm getting screen tearing. I can notice it when dragging around windows and more importantly in VLC when trying to watch videos.

    Is there a way I can turn on vsync with the open source ati driver in xubuntu or something? Thank you.

    Edit: I also noticed that with compositing turned off I don't have any tearing.
    Last edited by janderson91z; February 16th, 2012 at 11:28 AM.

  2. #2
    Join Date
    Mar 2007
    Location
    Portsmouth, UK
    Beans
    Hidden!
    Distro
    Ubuntu 11.10 Oneiric Ocelot

    Re: Screen tearing

    Are you unable to use the proprietary driver? The control centre used to have an anti-tear feature which you can enable?

  3. #3
    Join Date
    Mar 2006
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    Hidden!

    Re: Screen tearing

    Try turning compositing off.

    You can do this from the command line and / or create a launcher to turn it on and off if this is the problem.

    To turn off
    Code:
    xfconf-query --channel=xfwm4 --property=/general/use_compositing --set=false
    To turn on
    Code:
    xfconf-query --channel=xfwm4 --property=/general/use_compositing --set=true
    No longer participating......

  4. #4
    Join Date
    Jul 2009
    Location
    United States
    Beans
    156
    Distro
    Ubuntu 10.10 Maverick Meerkat

    Re: Screen tearing

    I had the same issue with the open source driver and tried several things to remedy this. However the only successful option was switching to the proprietary AMD/ATI driver which has an option for fixing the tearing.
    1: Win 7 - 2500k - 660ti - 8GB DDR3
    2: Xubuntu - 3570 - 650ti (2GB) - 12GB DDR3
    3: Win 8.1 - Q6600 - 9800 GTX+ - 8GB DDR2
    4: Arch - E7500 - 8800 GT - 6GB DDR2

  5. #5
    Join Date
    Jun 2009
    Beans
    33

    Re: Screen tearing

    Thank you for responding guys.

    Yeah, the ATI proprietary driver does fix this issue. I forgot to mention that. However when I use the ATI driver I can't enable my second monitor to extend the desktop. It only mirrors. When I try to extend it just closes out the AMD control center and doesn't change anything.

    And yes Jose, turning off compositing works but I like using compositing =/

    Currently I just have it turned off to resolve the issue but I would love to be able to use it with the ATI driver but the multimonitor issue is holding me back.
    Last edited by janderson91z; February 17th, 2012 at 10:55 AM.

  6. #6
    Join Date
    Jun 2009
    Beans
    33

    Re: Screen tearing

    Alright guys, I wanted to post that after searching and trying a few methods I was able to get dual monitors working in Xubuntu with the AMD proprietary driver by adding a line to the xorg.conf

    Code:
    Option "Xinerama" "on"
    If someone would like to explain to me what this is and why it's working I would love to know what this is doing.

    However, I have a new issue now. Everything is working perfectly BUT, now when I go into the XFCE settings panel and turn on the compositor, I hit the check box and nothing happens. The compositor doesn't turn on, despite the box being checked. I would love to have the compositor on with the tear free desktop. I like having opacity on the panel.

    Thank you.

  7. #7
    Join Date
    Mar 2007
    Location
    Portsmouth, UK
    Beans
    Hidden!
    Distro
    Ubuntu 11.10 Oneiric Ocelot

    Re: Screen tearing

    Greetings;

    Xinorama is an X extension which basically just allows you to display a desktop across multiple displays. I've seen other people complain about compositing and xinerama not working together; so it's probably common. It may be worth having a search for "xinorama compositing", as that seems to bring up a fair few things to try.

    I only use Nvidia (with twinview), so I have no means to dabble here.

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