ThoMo1969
Level 1 (0 points)

Q: USB port 1 & 3 not working, BT not available

iMAC 27", Mid 2011

 

The USB port 1 & 3 (1 is near the firewire port) are not working, also Bluetooth is not available.

I try to reset PRAM and SMC but it didnt change the situation.

 

When executing Hardware Test (Diagnostics) no errors are found (short and long test). When in the hardware test, all USB ports are working.

 

AND afterwards when restarting Mavericks the USB port 3 works again - but when I then unplug the mouse, put it to port 4 and back to port 3 it does not work anymore. (I didn't check if the same happens with port 1).

 

Any suggestions how to fix it?

 

Thomas

iMac (27-inch Mid 2011), OS X Mavericks (10.9.5)

Posted on Oct 17, 2014 11:30 AM

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ThoMo1969

Q: USB port 1 & 3 not working, BT not available

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  • by rkaufmann87,

    rkaufmann87 rkaufmann87 Oct 17, 2014 11:55 AM in response to ThoMo1969
    Level 9 (58,956 points)
    Photos for Mac
    Oct 17, 2014 11:55 AM in response to ThoMo1969

    In order to really do a valid SMC and PRAM reset you should do them 2-3 times back to back, sometimes they simply don't work the first time. Instructions for each are in iMac SMC and PRAM reset. If you still have problems after the third reset then try switching cables or devices. It's not that uncommon for devices or cables to fail. If the problem really is a bad port your only alternative outside replacing the main logic board ($$$) is to connect each of the devices to a powered USB Hub and connect the hub to one of the remaining working ports.

  • by ThoMo1969,

    ThoMo1969 ThoMo1969 Oct 18, 2014 7:09 AM in response to ThoMo1969
    Level 1 (0 points)
    Oct 18, 2014 7:09 AM in response to ThoMo1969

    USB ports work again but Bluetooth keeps not be available.

  • by rkaufmann87,

    rkaufmann87 rkaufmann87 Oct 18, 2014 7:41 AM in response to ThoMo1969
    Level 9 (58,956 points)
    Photos for Mac
    Oct 18, 2014 7:41 AM in response to ThoMo1969

    Bluetooth Troubleshooting

  • by ThoMo1969,

    ThoMo1969 ThoMo1969 Oct 26, 2014 2:19 AM in response to rkaufmann87
    Level 1 (0 points)
    Oct 26, 2014 2:19 AM in response to rkaufmann87

    Unfortunately it doesn't change anything.

    Yesterday I reinstall Mavericks from scratch (erase hard disk and install OS). Now no bluetooth icon appears in the menu bar - even not in system preferences.

     

    Some further issues I notice but I'm not sure if they are related to the bluetooth issue:

    • it takes about 60sec. after a reboot/restart until the apple logo appears and the progress indicator is running
    • I found a lot of USB error messages in the logs:
      $ sudo dmesg | grep USB
USBMSC Identifier (non-unique): 000000009833 0x5ac 0x8403 0x9833, 2
USBF:    6.179    AppleUSBEHCI::Found a transaction which hasn't moved in 5000 milliseconds on bus 0xfa, timing out! (Addr: 0, EP: 0)
USBF:    12.182    AppleUSBEHCI::Found a transaction which hasn't moved in 5000 milliseconds on bus 0xfa, timing out! (Addr: 0, EP: 0)
USBF:    12.215    The IOUSBFamily is having trouble enumerating a USB device that has been plugged in.  It will keep retrying.  (Port 1 of Hub at 0xfa110000)
USBF:    18.188    AppleUSBEHCI::Found a transaction which hasn't moved in 5000 milliseconds on bus 0xfa, timing out! (Addr: 0, EP: 0)
USBF:    24.191    AppleUSBEHCI::Found a transaction which hasn't moved in 5000 milliseconds on bus 0xfa, timing out! (Addr: 0, EP: 0)
USBF:    24.222    The IOUSBFamily is having trouble enumerating a USB device that has been plugged in.  It will keep retrying.  (Port 3 of Hub at 0xfa110000)
USBF:    30.195    AppleUSBEHCI::Found a transaction which hasn't moved in 5000 milliseconds on bus 0xfa, timing out! (Addr: 0, EP: 0)
USBF:    36.200    AppleUSBEHCI::Found a transaction which hasn't moved in 5000 milliseconds on bus 0xfa, timing out! (Addr: 0, EP: 0)
USBF:    36.231    The IOUSBFamily is having trouble enumerating a USB device that has been plugged in.  It will keep retrying.  (Port 2 of Hub at 0xfa110000)
USBF:    42.205    AppleUSBEHCI::Found a transaction which hasn't moved in 5000 milliseconds on bus 0xfa, timing out! (Addr: 0, EP: 0)


    • It seams to me like the internal USB hub is in trouble.
      Screen Shot 2014-10-26 at 10.11.02.png

     

    Unfortunately I can not compare it to a working iMac.

     

    ThoMo

  • by ThoMo1969,

    ThoMo1969 ThoMo1969 Nov 8, 2014 11:01 AM in response to ThoMo1969
    Level 1 (0 points)
    Nov 8, 2014 11:01 AM in response to ThoMo1969

    Finally the mainboard had to be replaced. Fortunately I have an extended warrant (3 years) so it doesnt cost me anything. otherwise about 700-800 EUR had to by paid.