0 Replies Latest reply on Feb 1, 2016 8:24 AM by merlin123

    X-Plane 10 Linux and AMD Cards

    merlin123

      Hi everyone,

       

      I am setting up a home flight simulator using the Simulator X-Plane 10 and AMD graphic cards.

      Xplane 10 is using Open GL for rendering

      I am using two AMD graphics cards in my system the R9 380 and the R7 265.

      Under Windows as a operating system both cards give me the same performance in X plane witch is OK, but i was surprised that the r9 isn't faster even it is a much newer card.

       

      But using Linux as an operating system, both cards are not performing good(About 10 Frames lower than on Windows, and the r9 even 15 ). Of course i made these tests witch the exact same situation and conditions using an amd eyefinity group with 3 1280x1024 monitors.

       

      As a Linux distribution i use Linux mint Debian witch is actually based on debian and as a driver for both cards the fglrx Version 15.10

       

      Why is the Linux system performing so bad?

       

      My system specs are:

      CPU: Intel 4790k at Stock Speed 4GHz

      Motherboard Gigiabyte Z97X Soc Force

      Two amd graphic cards: R9 380 and R7 265

      8GByte Kingston Hyper X RAM

       

      Note there is no visible performance difference using only one of this cards in the system, even the 4790 has only 16 pci-e lanes, and with two cards every card gets only 8 Lanes

       

      It seems that the driver performs bad on linux using open gl