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  1. #1

    Trouble with KVM switch

    hello again all, i bought a KVM switch and i'm trying to use it to have it connected to my main PC (win7) and my new machine i just installed ubuntu on. I hooked it up properly, and tried using it. It worked when switching from the win7 machine to the ubuntu one, but after the (1st and only) successful switch, ubuntu just didn't seem to recognize my mouse or keyboard.

    Basically when i tried it the easiest was to explain what happened was it only worked with Win7. When i switched over to ubuntu by doing a [scroll-lock] [scroll-lock], my keyboard and mouse were not recognized. However, the lights on the keyboard and mouse did work when on ubuntu, but they didn't function, and since keyboard wouldn't function, i couldn't do a [scroll-lock] [scroll-lock] to switch back to the win7 machine. So i was basically locked in to ubuntu with no mouse or keyboard, and i had to unplug the keyboard/mouse usb's and d-sub to plug the monitor d-sub back into win7 computer to type up this thread and google the issue. Seems some people have had this issue before but i couldn't find a fix...

    I am 80% sure it has to do with drivers... *but there isn't any for KVM switches, at least not this one* also i never was unable to find ubuntu drivers/firmware for my mouse and keyboard (Logitech G15 and Razer Deathadder 3500). I don't know how to fix this, perhaps someone super-savvy could write/code a script or work-around or something? I really need to get this thing working, my back is getting sore from bending over and plugging in / unplugging usb/monitor/usb/monitor/usb/usb over and over again lol... and i really would be sad if the constant plugging unplugging of the usb's or the d-sub port would over time damage the ports... i don't want that...

    There has to be some way to get this working..
    Can anyone help?

    The KVM is a IOGEAR GCS632U

    Win7 x64
    Ubuntu 10.10

  2. #2
    When the OS boots up it needs to see the mouse and keyboard for it to configure the devices.
    PS2 input devices are not hot pluggable like a USB device and they will not be detected after the pc boots up and then plugged in.

    Try this;

    Start up Windows first.
    Then switch the kvm to the Ubuntu pc.
    Now start Ubuntu.
    It should recognize the mouse and keyboard and they should work properly now.
    You should be able to switch back and forth now with no issues.

  3. #3
    Linux User ptkobe's Avatar
    Join Date
    Feb 2008
    Torres Vedras, PT
    If you are still using the Logitech G15 keyboard, could you try a more common keyboard and see if the KVM works ok?

    If so, take a look at Logitech Forums
    Re: G15 + KVM(iogear) Works - Page 2 - Logitech Forums

    A lot of solutions (?) are presented. Maybe messages 17, 19 or 20 may help you. Regards,

  4. $spacer_open
  5. #4
    thank you so much, that worked!! you rule!!!

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