Q: Problem with 27" LED display and Logitech Unifying receiver
I am borrowing an Apple 27" LED Cinema Display and using it with a mid-2010 MacBook Pro. I also use a Logitech Performance MX wireless mouse, which uses the tiny USB Logitech Unifying receiver.
My previous monitor was a 24" DELL DVI, which was working fine (using a Mini DisplayPort to DVI adapter) with the receiver plugged into one of the monitor's USB ports. However, with the Apple 27", I have encountered a nasty problem if the receiver is connected via the monitor either by direct connection or via my Apple wired USB keyboard (connected to the monitor).
If I boot with the Mini DisplayPort and USB connected to the MBP, everything is fine. If disconnect my MBP from the monitor and then later reconnect it, various problems occur:
* the USB keyboard and mouse stop working
* sometimes the trackpad stops responding
* iChat & Skype stop responding to input (beachball, and shown as not responding in Activity Monitor)
* All attempts to restart fail, including shutting down via "shutdown" shell command and killing WindowServer
After much gnashing of teeth, I tracked it down to the Unifying receiver. If I leave the receiver plugged directly into the MBP, I can connect and disconnect the monitor without incident.
Has anyone else encountered this problem? It appears to be some interaction between the monitor and the receiver. I'm guessing it has something to do with the USB peripherals embedded in the Apple 27" monitor, perhaps the microphone or iSight since both iChat and Skype would access those devices.
Thanks.
My previous monitor was a 24" DELL DVI, which was working fine (using a Mini DisplayPort to DVI adapter) with the receiver plugged into one of the monitor's USB ports. However, with the Apple 27", I have encountered a nasty problem if the receiver is connected via the monitor either by direct connection or via my Apple wired USB keyboard (connected to the monitor).
If I boot with the Mini DisplayPort and USB connected to the MBP, everything is fine. If disconnect my MBP from the monitor and then later reconnect it, various problems occur:
* the USB keyboard and mouse stop working
* sometimes the trackpad stops responding
* iChat & Skype stop responding to input (beachball, and shown as not responding in Activity Monitor)
* All attempts to restart fail, including shutting down via "shutdown" shell command and killing WindowServer
After much gnashing of teeth, I tracked it down to the Unifying receiver. If I leave the receiver plugged directly into the MBP, I can connect and disconnect the monitor without incident.
Has anyone else encountered this problem? It appears to be some interaction between the monitor and the receiver. I'm guessing it has something to do with the USB peripherals embedded in the Apple 27" monitor, perhaps the microphone or iSight since both iChat and Skype would access those devices.
Thanks.
MacBook Pro 15" 2.66 GHz, Mac OS X (10.6.5)
Posted on Dec 15, 2010 3:27 PM