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iMac has stopped recognizing USB when bodies are plugged in

Discussion in 'Panasonic Cameras' started by ralf-11, Jan 11, 2019.

  1. ralf-11

    ralf-11 Mu-43 All-Pro

    Jan 16, 2017
    My 2017 iMac has stopped recognizing either my GX85 or my G9 when they are plugged into the USB to transfer files. This is my preference as I can do the transfer and then turn the body off to charge the battery.

    The 2 bodies use different types of cables, and the setup menus on the camera have NOT changed.

    i suspect that Crapple has effed up the USB recognition somehow with one their %^&*()$ "upgrades"...

    Any ideas?

    Maybe there is a way to force the damn USB drivers to rescan the port?
  2. ex machina

    ex machina Mu-43 All-Pro Subscribing Member

    Jan 3, 2014
    Baltimore, MD
    A couple things:

    1. First, the universal fix -- have you restarted?
    2. Second, the USB bus may be overloaded -- try plugging in only one device, directly into your iMac, and see if that works, then add more USB devices until it quits working. If you are plugging into a hub, bypass the hub.
    • Agree Agree x 1
  3. ralf-11

    ralf-11 Mu-43 All-Pro

    Jan 16, 2017
    Thx - but can't figure out why it used to work but stopped as none of those things have changed
  4. Stanga

    Stanga Mu-43 Top Veteran

    Oct 16, 2016
    Check if your MAC has a USB2.0 or 3.0 port. I found that the USB3.0 implementation on the recent MACs no longer supports some external equipment that quite happily works under USB2.0
  5. ralf-11

    ralf-11 Mu-43 All-Pro

    Jan 16, 2017
  6. Rollasaurus

    Rollasaurus Mu-43 Regular Subscribing Member

    Dec 27, 2018
    Evansville IN USA
    You can try resetting the SMC, sometimes that will fix the problem especially something that just seems to come out of nowhere.

    System Management Controller:
    1. Shut down your Mac
    2. Disconnect the power cord
    3. Press and hold the Mac’s power button for 5 seconds
    4. Release the button
    5. Reattach the power cables and boot the Mac as usual
  7. ex machina

    ex machina Mu-43 All-Pro Subscribing Member

    Jan 3, 2014
    Baltimore, MD
    Did you try restarting, yet?
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