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

  1. #1
    Join Date
    Feb 2009
    Location
    France
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    309

    Unhappy 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:
    http://mupuf.org/blog/article/10/

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

    Thanks a lot

  2. #2
    Join Date
    Oct 2007
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    Toronto-ish
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    Default

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

  3. #3
    Join Date
    Dec 2007
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    2,402

    Default

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

  4. #4
    Join Date
    Feb 2009
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    France
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    Default

    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

  5. #5
    Join Date
    Oct 2008
    Posts
    52

    Default

    Quote Originally Posted by MPF 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 MPF.

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

  7. #7
    Join Date
    Oct 2008
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    52

    Default

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

  8. #8
    Join Date
    Jan 2008
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    294

    Default

    Quote 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 MPF.
    Yes, this is a known issue.

  9. #9
    Join Date
    Jun 2009
    Posts
    2,933

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    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.

  10. #10
    Join Date
    Nov 2008
    Location
    Madison, WI, USA
    Posts
    881

    Default

    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.

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