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  • amdpcsdb customizing

    Hello.

    i was helping a friend debug some troubles with ATI cards on a winblows box, and in the winblows registry i found the ati section, and noticed that the options in there looks suspeciously similar to a few of those in the /etc/ati/amdpcsdb on linux with the fglrx driver.

    I was wondering if some of you have had the oppertunity to try some of these options, if they improve performance? or if they dont work at all?

    I myself am unable to attempt this, as i dont have an ati card in anymore(only had for test, an 3450), and i also dont have access to winblows easily.

    But if anyone knows something, im very interrested in the results, there seemed to be some interrestingly looking settings.

  • #2
    nobody thats in a position to try this?

    Comment


    • #3
      Originally posted by Redeeman View Post
      nobody thats in a position to try this?
      well I could.. and it seems interesting! but I don't have time now.

      anyway do you remember where the ati section was in the registry?

      Comment


      • #4
        I use only the xorg.conf and after every change I restore the defaults with:

        cp -av /etc/ati/amdpcsdb.default /etc/ati/amdpcsdb

        I don't trust this database.
        Last edited by Gregor A.; 06-30-2008, 01:32 AM.

        Comment


        • #5
          Originally posted by Gregor A. View Post
          I use only the xorg.conf and after every change I restore the defaults with:

          cp -av /etc/ati/amdpcsdb.default /etc/ati/amdpcsdb

          I don't trust this database.
          But ATi does!

          every time you start Xorg, the driver re-fills the /etc/ati/amdpcsdb with the settings of xorg.conf

          Considering also that it's the only place where info about Anti-Aliasing, Anisotropic Filter, and so on... are placed, you need it.

          It's reason is quite simple: ati devs say that they prefer use the xorg.conf for Xorg and /etc/ati/amdpcsdb for the driver. I think it's flawless.

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          • #6
            Originally posted by Gregor A. View Post
            I use only the xorg.conf and after every change I restore the defaults with:

            cp -av /etc/ati/amdpcsdb.default /etc/ati/amdpcsdb

            I don't trust this database.
            You don't "trust" the database? It's not witchcraft, you know. It's just a file that stores driver settings. There's nothing particularly complex or spooky about it, as far as I can tell.

            Comment


            • #7
              Following this http://www.phoronix.com/scan.php?pag...rsistent&num=1 article, I went and had a look:
              Code:
              DALObjectData0=R010000000100000000000000010000000100000000000000010000000100000000000000010000000100000000000000010000000200000000000000010000000200000000000000030000000100000002000000030000000100000002000000010000000400000000000000010000000400000000000000010000000500000000000000010000000500000000000000010000000200000000000000010000000200000000000000010000000500000000000000010000000500000000000000010000000800000000000000010000000800000000000000010000000900000000000000010000000900000000000000010000000A00000000000000010000000A00000000000000030000000900000002000000030000000900000002000000030000000800000004000000030000000800000004000000030000000900000004000000030000000900000004000000010000000A00000000000000010000000A00000000000000030000000900000002000000030000000900000002000000010000000100000000000000010000000100000000000000010000000100000000000000000000000000000000000000010000000200000000000000000000000000000000000000010000000100000000000000020000000000000002000000010000000400000000000000000000000000000000000000010000000100000000000000020000000000000004000000010000000200000000000000000000000000000000000000010000000500000000000000000000000000000000000000010000000800000000000000000000000000000000000000010000000800000000000000020000000000000001000000010000000800000000000000020000000000000002000000010000000900000000000000020000000000000002000000010000000800000000000000020000000000000004000000010000000900000000000000020000000000000004000000010000000A00000000000000000000000000000000000000010000000900000000000000020000000000000002000000
              This is just one line !!!
              But my god, that is very very spooky looking indeed.
              I mean xorg.conf my be a pain to setup, but at least its structured cleanly and human-readable. I can't count the times I needed to go in there and fix something, but at least I could do so, from a text console.
              But this database is just a mess. Oh wait, were supposed to use amdccccccccccc...isn't it great to have such a wonderful tool around?!
              *Irony off*, but seriously amdccc sucks, under linux as much as under windows.

              The opensource world definitely should NOT follow in those kind of footsteps when designing their sollution. IMO

              Comment


              • #8
                I guess it is just a part of the driver (current variables) as binary snapshot, thats pretty easy to implement but hard to change.

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                • #9
                  That's what I thought, but if you look closely, you'll actually see its hex!?
                  Now I always thought the point of using hex-number representation in computers was to make the whole affair digestible to our puny human minds.
                  But, allas I was wrong...

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                  • #10
                    I appreciate the whole persistent config idea, but I do have to question whether the database approach may be completely against the Linux philosophy of KISS. I think plain-text human-readable config files are great for keeping things configurable and under the user's control. It's easier to diagnose problems that way, too. I guess this makes sense for a proprietary driver setup.

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