Two simultaneous users?

Discussion in 'Mac Pro' started by grcar, Oct 25, 2015.

  1. grcar Suspended

    grcar

    Joined:
    Sep 28, 2014
    #1
    So the Mac Pro has two graphics chips. Is it possible to connect two monitors, keyboards, mice or whatever so that two users can login to their own accounts simultaneously?
     
  2. Intell macrumors P6

    Intell

    Joined:
    Jan 24, 2010
    Location:
    Inside
    #2
    No, OS X cannot do this yet without Screen Sharing.
     
  3. ActionableMango macrumors 604

    ActionableMango

    Joined:
    Sep 21, 2010
    #3
    No, one of the graphics cards has no video outputs at all. Also OS X doesn't support multiple users at the same time. All connected mouse and keyboard devices will be applied to the one user currently logged in.

    You could do this in theory using VM software such as Parallels or VMWare. These let you assign USB devices to either the physical machine or the VM, so theoretically you could run a second copy of OS X in a VM, assign your second keyboard and mouse to it, and move the VM window to a second monitor. But I've never seen anyone try this so I don't think it's been confirmed to work.
     
  4. h9826790 macrumors 604

    h9826790

    Joined:
    Apr 3, 2014
    Location:
    Hong Kong
    #4
    I did that and it works. However, it has nothing to do with the 2nd GPU. And there is no way to assign the whole 2nd GPU for the VM to use.

    So, it's do-able, the 2nd GPU is not required, but OP can't take any benefit from the 2nd GPU with this setup.
     
  5. ActionableMango macrumors 604

    ActionableMango

    Joined:
    Sep 21, 2010
    #5
    That's great to know! I've suggested this a few times now, but rather meekly since I haven't seen anyone do it yet.

    I'm curious, which VM software and which host and guest operating systems do you use for this?
     
  6. h9826790 macrumors 604

    h9826790

    Joined:
    Apr 3, 2014
    Location:
    Hong Kong
    #6
    Software: Parallel

    Host: OSX
    Guest: Windows (OSX works as well, but no GPU acceleration, the UI will be very choppy).

    For multiple User simultaneous OSX desktop operation. I will use Google remote for the second user (already login in the host computer, but not active), it's good enough for simple ops. And won't affect the primary (active) user in the host computer.
     
  7. ActionableMango macrumors 604

    ActionableMango

    Joined:
    Sep 21, 2010
    #7
    Thanks for the reply. Interesting stuff.

    That's too bad there's no GPU acceleration for an OS X guest even on a Mac with an OS X host.
     

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