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Thread: Ubuntu 11.04 + Radeon 4200 + fglrx issues

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  1. #1
    Join Date
    Jul 2007
    Posts
    100

    Default Ubuntu 11.04 + Radeon 4200 + fglrx issues

    Hi,

    I have a Athlon II X2 + 785G based system plugged into my LCD TV over HDMI @ 1920x1080

    I'm running Ubuntu 11.04 + the default r600g driver.

    Almost everything in the open source driver is fantastic, firmly in the Just Works camp.
    Only Banshee's video player plays video at a reasonable frame rate without audio sync drift issues and minecraft is unplayable (slideshow, control lag and crackly sound)

    The only way I've found I can play minecraft well is by installing fglrx.

    However, this causes desktop composition, all video and all, well, applications to run like a slideshow. Scrolling, windows dragging, video playing. Awful.

    I think flash still works well, and that's about it.

    Has anybody else got any information on solving these issues? It seems odd that it should improve performance so much in a game and trash everything else.

    Thanks,

    J1M.

  2. #2
    Join Date
    Jul 2007
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    100

  3. #3
    Join Date
    Jan 2010
    Location
    Portugal
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    Default

    I'm having similar issues. Even disabling sync to vblank doesn't completely solve it, but it does help, e.g. scrolling in chromium isn't smooth at all. It seems that 2D stuff with compiz active is very slow once again. It used to be a big weakness but AMD supposedly fixed it a few driver versions ago.

  4. #4
    Join Date
    Jul 2007
    Posts
    100

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    Grr, phoronix NEVER sends me notification emails for thread replies, sorry.

    I tried the vsync fix for fglrx, better, except in Firefox.
    Still epic slow in FF, both typing lag (AAARGH) and scrolling.

    I shall continue searching as at least fglrx is no longer mental unstable.
    Also, minecraft and system shock 2 works (under wine)

  5. #5
    Join Date
    Jan 2010
    Location
    Portugal
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    I've been digging deeper into this issue and it seems to affect more GPUs, but Radeon IGPs are the ones where it is more evident. It is probably a Compiz problem as some users reported similar symptoms using Ubuntu Classic with Effects, and downgrading compiz to version 0.8.6 fixed the issues for them. Also, my own personal workaround is to use unity-2d. It's sooo much smoother now! I don't understand how they fucked this up so badly. Ubuntu 11.04 with Unity feels like KDE used to with KWin and compositing.

  6. #6
    Join Date
    Jul 2007
    Posts
    100

    Default

    HA!

    I just installed unity-2D as well (great minds)

    I can live without Compiz, but I can't live without Unity.
    Just 5 minutes in Classic made me want to scream (Applications/Start menu? Please, 1995 called...)

    Still, I'm very tempted to drive to local PC shop and buy a cheap NVidia card.
    Shouldn't do that though, as I'm quite deliberately supporting AMD/ATI because of their sterling FOSS efforts.

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