10 Replies Latest reply on Jun 4, 2014 7:48 AM by mark_anderson_us

    Fourth Monitor for FirePro 2460 - fglrx

    dkayser

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      I am running 3.2.0-23-generic #36-Ubuntu SMP Tue Apr 10 20:39:51 UTC 2012 x86_64 x86_64 x86_64 GNU/Linux with the FirePro 2460 with the following driver.

       

      fglrx                                  2:8.960-0ubuntu1

       

      I can get 3 monitors working fine each running under a different xserver DISPLAY name, :0.0, :0.1, :0.2. When I add the fourth monitor, I end up with the following error in Xorg.0.log.

       

      Does anyone know if this is supported? Is this an error in configuration? Is this an error in the driver?

       

      Should I ask these questions elsewhere?

       

      [4.063] (EE) fglrx(3): Display Infrastructure Failed Due to Hardware Limitation
      [4.063] (EE) fglrx(3): PreInit failed

       

      Thanks, Donald Kayser

        • Re: Fourth Monitor for FirePro 2460 - fglrx
          chm

          Hi Donald,

           

          can you please provide some details on how you connected the monitors. Are they all connected using passive Display Port to DVI or HDMI adapters?

          Actually you cannot connect 4 different DVI monitors to the 2460. You should connect them through Display Port. If the monitor does not support DisplayPort you should use active DisplayPort to DVI adapters. Those behave to the graphics board as a DP connection.

          All DP monitors can share a single clock whereas each DVI monitor needs its own clock. So the number of possible DVI/HDMI monitors is limited.

           

          A list of recommended active DP to DVI/HDMI adapters can be found on: http://support.amd.com/us/eyefinity/Pages/eyefinity-dongles.aspx

            • Re: Fourth Monitor for FirePro 2460 - fglrx
              dkayser

              Wonderful! Thanks for the answer. That makes sense now. I have been able to get 4 DVI monitors working with each pair of monitors being 'identical'. Very interesting that I could still get each of the 4 monitors at a different resolution. We noticed that the monitor didn't really report the new mode, but the one that it started with. The GPU must be doing the work.

               

              Cool, and thanks for the answer.

               

              Donald

            • Re: Fourth Monitor for FirePro 2460 - fglrx
              pee2002

              I would only want an official answer as there are many questions in the many comments I've seen out there:

               

              The system:

              2x FirePro 2460

              8x Asus VE228H (only have DVI connection)

               

              The question:

              Can i connect all of them with the included mini displayport to DVI-D passive adapters?

               

              Regards