Page 1 of 2 12 LastLast
Results 1 to 10 of 17

Thread: help with multihead setup in xorg with radeon

  1. #1
    Join Date
    Jun 2009
    Posts
    1,020

    Default help with multihead setup in xorg with radeon

    hi guyz, i have a radeon 4850x2 ehich have 4 dvi connectors, is possible to use 1 monitor per GPU (both same rez) without xinerama?

  2. #2
    Join Date
    Oct 2009
    Posts
    1,987

    Default

    Xinerama wouldn't come into play when two monitors are on two GPUs. You'll have 1 xserver running per GPU.

  3. #3
    Join Date
    Jun 2009
    Posts
    1,020

    Default

    mmm ok, i had that idea too, let me try to force kdm to initialize both xservers

  4. #4
    Join Date
    Dec 2008
    Posts
    980

    Default

    You don't need to run two xservers for that, you can just run one xserver with 2 separate screens.

  5. #5
    Join Date
    Oct 2009
    Posts
    1,987

    Default

    Quote Originally Posted by monraaf View Post
    You don't need to run two xservers for that, you can just run one xserver with 2 separate screens.
    TWO GPUs!!!!

  6. #6
    Join Date
    Dec 2008
    Posts
    980

    Default

    Yes no problem. I'm using two different GPUs with one xserver myself, works fine.

    Code:
    $ glxinfo 2>/dev/null|grep renderer
    OpenGL renderer string: Mesa DRI R600 (JUNIPER 68BE) 20090101  TCL DRI2
    OpenGL renderer string: Mesa DRI R600 (RS780 9610) 20090101  TCL DRI2

  7. #7
    Join Date
    Oct 2009
    Posts
    1,987

    Default

    Right... count the number of Xorg processes you have running.

  8. #8
    Join Date
    Dec 2008
    Posts
    980

    Default

    Don't be stubborn. Like I said I have only one xserver running with two separate screens.

  9. #9
    Join Date
    Jun 2009
    Posts
    1,020

    Default

    Quote Originally Posted by monraaf View Post
    Yes no problem. I'm using two different GPUs with one xserver myself, works fine.

    Code:
    $ glxinfo 2>/dev/null|grep renderer
    OpenGL renderer string: Mesa DRI R600 (JUNIPER 68BE) 20090101  TCL DRI2
    OpenGL renderer string: Mesa DRI R600 (RS780 9610) 20090101  TCL DRI2
    nice, can you explain me how to try that configuration? i tried many methods but i couldn't get it like that

    plz

  10. #10
    Join Date
    Nov 2008
    Posts
    755

    Default

    I think what monraaf did was to create two Device and Screen sections in his xorg.conf, then join them with Xinerama.

    If you want a big desktop with the ability to drag windows between screens, you need Xinerama if you have multiple GPUs.

    You could also configure both as a single X server without Xinerama, using a single mouse/keyboard, but without the ability to drag windows across screen boundaries.

    The third option is to configure two separate X servers, needing a separate mouse/keyboard for each and some multiseat hackery so they don't fight over the active VT.


    You could forfeit one GPU and attach both monitors to the other; then you'd have a big desktop without Xinerama. For 2d and compositing that would probably be faster. Not for heavy 3d-apps (games) though.

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •