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Thread: Display slow and jerky with Natty and 11.4, 11.5 Catalyst

  1. #1
    Join Date
    Sep 2010
    Posts
    13

    Default Display slow and jerky with Natty and 11.4, 11.5 Catalyst

    Hi, I am trying to get the Catalyst drivers working properly with Ubuntu 11.04 Natty. So far I haven't any luck. I used both 11.4 and 11.5 versions of fglrx, anyone have any ideas?

    Thanks,
    Andrew

  2. #2
    Join Date
    Apr 2011
    Posts
    80

    Default

    What do you mean by "slow"?

    When I installed Natty, I needed to change compiz configuration to make the environment smother.

    I went to opengl options inside compizconfig-settings-manager and I unchecked all, leaving texture filter as fast.

  3. #3
    Join Date
    May 2010
    Posts
    684

    Default

    Turn "sync to vblank" off in ccsm. Its enabled by default in natty and seems to cause speed issues with ati cards (especially when moving windows). That setting doesn't even work with fglrx anyway (and you just use tear free desktop in ccc for vsync)

  4. #4
    Join Date
    Sep 2010
    Posts
    13

    Default

    I think that's a go, I have been looking for the place where I could change the vsync values but I couldn't exactly find them... off to do some more exploring in ccsm. Thanks!

  5. #5
    Join Date
    Jan 2007
    Location
    Germany
    Posts
    2,117

    Default

    Turning off sync to vblank really improves the performance a lot. It should be the default when the Catalyst is being used.

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