HD4770: Screen corruption and artefacts with the from-git graphical stack

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  • MuPuF
    Nouveau
    • Feb 2009
    • 381

    HD4770: Screen corruption and artefacts with the from-git graphical stack

    Hi,

    I have had corruption problems with the open source driver for a few days now and it doesn't seem to go away.

    Here is a video of the current state on my computer:


    Do you guys have any idea of what's going on ?

    Thanks a lot
  • bridgman
    AMD Linux
    • Oct 2007
    • 13183

    #2
    Are you running openarena with LIBGL_ALWAYS_INDIRECT=yes ? It will look pretty bad if you don't right now...
    Test signature

    Comment

    • agd5f
      AMD Graphics Driver Developer
      • Dec 2007
      • 3939

      #3
      Also, EXA DFS seems to have issues on some rv740s.
      Option "EXANoDownloadFromScreen"
      should fix any issues with the cursor or small pixmaps.

      Comment

      • MuPuF
        Nouveau
        • Feb 2009
        • 381

        #4
        Thanks to both of you! It works quite well.
        There are still some minor corruption problems when typing text for example but I can live with it

        Comment

        • Perry3D
          Phoronix Member
          • Oct 2008
          • 58

          #5
          Originally posted by M?P?F View Post
          Thanks to both of you! It works quite well.
          There are still some minor corruption problems when typing text for example but I can live with it
          I have the same issues with compiz enabled.


          I hope this is a known bug and not Arch related, since I am using the same packages as M?P?F.

          Comment

          • MuPuF
            Nouveau
            • Feb 2009
            • 381

            #6
            Perry3D: Did you activate Option "EXANoDownloadFromScreen" ?
            It solved my problems and I no longer have this kind of corruption.

            Comment

            • Perry3D
              Phoronix Member
              • Oct 2008
              • 58

              #7
              Yes, i already tried this option: no difference.
              The corruptions appears when typing text, opening the gnome menu and some progress bars:

              Comment

              • legume
                Senior Member
                • Jan 2008
                • 332

                #8
                Originally posted by Perry3D View Post
                I have the same issues with compiz enabled.

                I hope this is a known bug and not Arch related, since I am using the same packages as M?P?F.
                Yes, this is a known issue.

                Comment

                • pingufunkybeat
                  Senior Member
                  • Jun 2009
                  • 2921

                  #9
                  Speaking of corruption, after upgrading to KDE 4.3, all the XRender-related artefacts disappeared and compositing in XRender mode is working great (though seemingly a bit slower than before).

                  OpenGL compositing starts, but hangs after a while.

                  Comment

                  • Veerappan
                    Senior Member
                    • Nov 2008
                    • 1377

                    #10
                    I'd just like to chime in and say that EXANoDownloadFromScreen fixed the pointer corruption issues I was having in Gnome as well (no compositing, Ubuntu 9.04 w/ git drm/mesa/xorg-driver).

                    My card is a Radeon HD 4770 on a Gigabyte 785G-based mATX motherboard.

                    I'm still getting glxgears corruption with both normal GL, and with LIBGB_ALWAYS_INDIRECT=1, but I won't be able to do much troubleshooting with that until after work probably.

                    Comment

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