Normal USB usage causes Yosemite to Freeze
Since 10.10 and 10.10.1 Yosemite has been freezing me out of the OS on my 2014 Retina MBP.
It happens regularly when a new USB device is plugged in, or when an already plugged in device has an alteration in it's state of power. The result is that all mouse and keyboard input is impaired/frozen. This includes the trackpad, built in keyboard and external mouse. No amount of plugging and unplugging restores access to the computer. The system still seems to be running as the odd email notification will come up, and once I had a large folder of files copying that seemed to finish. To restore use, I need to force restart.
Other times, plugging in or removing (gracefully) a USB device will interrupt audio playing through my USB sound card, which goes silent for a second, or squeals at a speaker/ear piercing 10,000 Hz. This, and with Ableton live 9 freezing itself every 5 minutes makes using this thing for audio production completely useless.
The triggers so far have been...
- Switching my Remote SL midi keyboard off and on again
- Switching my Motu Mk3 Ultralight on or off
- Switching my DN-MC6000 on or off
- Unplugging all of the above directly from the USB port (i.e. hot swap)
Note: I have tried plugging in to my Dlink USB2 hub and also directly into the MBP. The Dlink has been very stable in the past, although audio equipment, and many other USB devices seem to prefer being plugged in to the root port. It's ironic that Apple applies form over function when it comes to the number of USB ports provided, yet seems so unstable when an external hub is used.
Note that the laptop came with Mavericks, and one of the first things I did before installing anything else was accept the Yosemite upgrade. So technically it's not a clean install. But there should have been very little in the way of system files that needed to make the transition.
MacBook Pro (Retina, 15-inch, Mid 2014), OS X Yosemite (10.10.1)