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iMac g5- Dual monitor support?

Discussion in 'Macintosh Computers' started by Winstonp, Mar 21, 2005.

  1. macrumors 6502a


    Im interested in an imac g5, but can I use my lcd as a monitor extension?
  2. macrumors 601


    Yes. It requires a "hack" to do, but it can be done and it works well. If you search on these forums, I'm sure it will be easy for you to find out how.
  3. macrumors 6502a


    Yes.. You have to use a hack if you want to use Monitor Spanning.. Google it you will find it.


    here it is
  4. macrumors 68040


    Also, this hack is not supported my Apple and voids the warranty. Correct me if I'm wrong....
  5. macrumors 6502a


    sweet....not bad at all.

    How can that void your warranty?
  6. macrumors 68040


    Not really sure other than the fact that it's not supported or isn't guaranteed, but that's what I [thought] read here :D I know some people here have done the hack and would know for sure.
  7. macrumors 68000


    No it doesn't, it's simply a software modification and can be fixed by a simple formatting of the hard drive.

    I really do wonder why people see the word 'hack' and imeaditly think it voids the warrantee.
  8. macrumors 68040


    You have to reformat the HD to undo it? I thought I read somewhere where you just have to "undo" something in the hack. Man I really made this complicated now :p

    Probably because "hack" sounds so mischievous that is sounds as thought it could. But I could have sworn I read that it did void the warranty. Must have been wrong, oh well :eek: :)
  9. Moderator emeritus


    I had this firmware hack applied to an iMac G5 midplane that was sent back to Apple, they never said a word about it.
  10. macrumors 6502a


  11. macrumors 6502

    Well, since Apple's Warranty is a Hardware warranty and dosen't cover software anyway, I don't see how it would void it. :D
  12. macrumors 6502a



    so, should i get an imac g5 and take this risk and dual it out?

    it'd be so cool...

    Anyone beleive that it isnt permanent?
  13. macrumors 68000


    Maybe? I've never had any reason to uninstall the hack on my computer, but I've lost the ability to span screens every time I reformat the computer.
  14. macrumors 6502a


    what size is your imac? So you're saying that the ability went away with a reformat?
  15. macrumors 6502a

    here's a link to a macworld article regarding this:


    Remember that you have a VGA out... the monitor needs to have a VGA input; if it is DVI only you need an adapter which runs ~$300

    I haven't tried the hack, but I have heard that resetting the NVRAM (or whatever it is) restores the iMac to the original state regarding display properties.
  16. macrumors 68030


    No I think there is a "reverse" function on the app that ley you do it ;)
  17. macrumors 6502a


    i just realized something. this software may not work with tiger...

    what you all think?
  18. Moderator emeritus


    I thought it was a firmware hack, which has nothing to do with the OS, there for it should work no matter what OS you have on your system...I think :D
  19. macrumors 68030


    Well at least it is advertized as a Firmware hack.
    So that should not be bother by the OS then ;)
  20. macrumors 6502a



    so would anyone suggest I don't buy the imac g5 with complete intention to run dual monitors?

  21. macrumors 6502

    Look, people, if you don't know how this "hack" works (it's an Open Firmware patch), don't chime in with ill-informed advice.

    You do NOT reverse this patch by formatting the hard disk. The patch is in the firmware and can be reversed by resetting the NVRAM - all you have to do is shut down and hold down Command-Option-P-R while turning on the computer.

    It doesn't void your warranty. If you're worried about it, you can reset your firmware before having your computer serviced.

    And yes, it works like a champ on the iMac G5. The patch is available as an easy-to-run applescript "Screen Spanning Doctor" available at http://macparts.de/ibook


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