Results 1 to 7 of 7

Thread: has anyone gotten 2 nVidia cards to work in Ubuntu? (trying 790GX + 2x 9400GT)

  1. #1
    Join Date
    Oct 2008
    Location
    Boston, MA
    Posts
    12

    Default has anyone gotten 2 nVidia cards to work in Ubuntu? (trying 790GX + 2x 9400GT)

    Hello All,
    Has anyone gotten 2 nVidia cards to work in Linux? I'm running Ubuntu 9.04 Januty Jackalope 64-bit with dual monitors. I've installed both cards, but Linux only recognizes one. Is there a trick to enabling the second card? I'm not using SLI. I just want to run a monitor on each card.

    I wanted to build the "perfect" development workstation for writing Java code, checking e-mail, running server software, etc. I have a 1600x1200 monitor on the left and a 1920x1200 monitor on the right. 2D performance is pretty sluggish, so I tried buying 2 graphics cards instead of having 1 older video game card. I am running a Phenom 2 955 on a 790GX motherboard.

    I originally tried running the 790GX integrated graphics and a Radeon 3450 card (they work together in Hybrid Crossfire in Windows), but had lots of issues with their driver with dual monitors (let alone dual GPU) and went back to nVidia as it's what I've been using on Linux for the last 10 years.

    I have dual monitors working with one graphics card. I put a second one in and am trying to see a reference to it in the nVidia X Server Settings panel.

    Has anyone ran 2x 9400 GTs before?
    Has anyone run 2x nVidia cards before?
    Can this configuration work?

    Any advice is greatly appreciated.

    Thanks,
    Steven

  2. #2
    Join Date
    Aug 2007
    Posts
    6,683

    Default

    Did you try nvidia-settings to enable more displays?

  3. #3
    Join Date
    Oct 2008
    Posts
    8

    Default hmm

    Does your mainboard have a nforce chipset with SLI support?

  4. #4
    Join Date
    Oct 2008
    Location
    Boston, MA
    Posts
    12

    Default

    Quote Originally Posted by Kano View Post
    Did you try nvidia-settings to enable more displays?
    Hello Kano, thanks for responding. Yes, I looked in nvidia-settings and only saw one GPU.

  5. #5
    Join Date
    Oct 2008
    Location
    Boston, MA
    Posts
    12

    Default

    Quote Originally Posted by GneXteR View Post
    Does your mainboard have a nforce chipset with SLI support?
    Hello GneXteR, thanks for responding. The 790GX supports crossfire and has 2 PCIe 2.0 slots, but doesn't support SLI.

    I assumed it wasn't a requirement as I'm not trying to get SLI working, I just wanted to run each monitor on a separate 2D accelerator.

    On a related note, I tried installing Windows XP (on another hard drive) this morning and didn't notice any explicit reference to the 2nd graphics card. I've never tried using 2 cards before, so I don't know what I am looking for. I don't even know my way around the windows client very well.

    The 9400GT doesn't have SLI connectors. I assumed it didn't matter, but am starting to wonder.

    Thanks,
    Steven

  6. #6
    Join Date
    Aug 2007
    Posts
    6,683

    Default

    Why do you need 2 gfx cards for only 2 monitors?

  7. #7
    Join Date
    Oct 2008
    Location
    Boston, MA
    Posts
    12

    Default

    Quote Originally Posted by Kano View Post
    Why do you need 2 gfx cards for only 2 monitors?
    It's not a necessity, but I am hoping it will make my machine more responsive at high resolutions by splitting the load across 2 2D accelerators.

    http://phoronix.com/forums/showthread.php?t=17763

    I spend a lot of time writing code in Linux and anything I can do to reduce delays makes my day much less frustrating and enables CPU cycles for other tasks.

Posting Permissions

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