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No-backfill still needed?

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  • No-backfill still needed?

    I was thinking of reinstalling Ubuntu 9.10 and was wondering if the no-backfill X-server patch was still needed for "a lag free experience with Compiz" if I use Catalyst 10.1 together with my HD4870?

  • #2
    Not the backfill, but the newer backclear patch is needed.

    I hear this problem is going to get fixed in a future Catalyst driver release

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    • #3
      Ah, silly me. I was actually thinking of the backclear patch :P

      Thanks.

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      • #4
        Here on opensuse 11.2 the backclear patch is still needed.

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        • #5
          Originally posted by d2kx View Post
          Not the backfill, but the newer backclear patch is needed.

          I hear this problem is going to get fixed in a future Catalyst driver release

          A new 2D acceleration mechanism has gone into the 10.2 and 10.3 betas and is in testing. Supposedly it improves performance under composite window managers, but I haven't been able to test it due to unrelated issues in the drivers. They seem to be targeting Compiz, but I expect kwin will also see improvements. Hopefully everything pans out in the end.

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          • #6
            FYI I just installed ubuntu 10.04 with the catalyst drivers v10.3 which came out just yesterday and the no-backfill problem is still there...

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            • #7
              You probably want the backclear patch, not the no-backfill patch.

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              • #8
                Originally posted by bridgman View Post
                You probably want the backclear patch, not the no-backfill patch.
                why are u saying that? I have exactly the same issue with maximizing/minimizing windows in compiz

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                • #9
                  Are you using the backclear patch ?

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                  • #10
                    It is still needed unless you enable this new 2D acceleration method. It's called 'Direct2D'
                    1. Kill the x server
                    2. Open /etc/ati/amdpcsdb, and under the section [AMDPCSROOT/SYSTEM/DDX]
                    add:
                    Direct2DAccel=STRUE
                    3. Reboot (just in case)

                    It's still on testing, but its getting pretty stable, at least for me.

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