Firewire Quit Working In Mountain Lion
I have two devices that previously worked in Mountain Lion and recently both stopped working at the same time.
The first is an Allen & Heath ZED R16. The second is a MOTU 8Pre. Both are Firewire Audio Interfaces for a recording studio.
These have worked in Leopard, Snow Leopard, Lion and more recently Mountain Lion. I recently (January) did a complete fresh install of Mountain Lion on this system. Afterwards I installed the latest drivers for both devices and they both worked fine. They were working fine up until about a month or so ago when they just both stopped being recognized by the computer.
I have tried uninstalling all drivers and reinstalling (with devices off of course). I have tried three separate Firewire 400 cables and two Firewire 400 to Firewire 800 cables. The computer has a 400 and 800 jack so I have obviously tried each device with each port.
Since I had tried all of this, I had started to assume that it was the Firewire ports gone bad on the computer. However, last night a friend of mine brought over his Macbook Pro and we tried both devices on his system (also running fully up to date Mountain Lion) and neither were recognized by his system either. When he got home he plugged his Firewire Audio Interface into his laptop and it too was unrecognized. Fortunately for him, he updated the drivers and it found it. Like I said, I have tried updating my drivers multiple times to no avail.
Also, if I go to my Firewire section of the Mac info it says FireWire Bus: Maximum Speed: Up to 800 Mb/sec. I am assuming this means the computer is recognizing the ports?
I have a hard time believing that both of these devices had Firewire port failures at exactly the same time. They are both plugged into studio quality surge protectors and power conditioners, as is the computer.
Is there anyway to reset anything or test any further? I am out of options.
Specs:
24 Inch Mid 2007 iMac
2.4 GHz Intel Core 2 Duo
4 GB 667 MHz DDR2 SDRAM
ATI Radeon HD 2600
OS X 10.8.3 (12D78)
iMac, OS X Mountain Lion (10.8.3)