828mkii Sometimes Stops Working Options

[MatzeMillion]

Hi everyone,

I have a strange problem with an 828mkII and a MacPro. Sometimes after closing an application with motu sound output (logic, a game, quicktime, etc) the interface stops working. Its still avaliable, but don't play back any sound. Only way to get sound back is a restart.

It does happen only with a MacPro. With an Intel MacMini, a MacBook Pro and Powerbook G4 evertything is fine.
I tried a complete reinstall, other cable, removing other devices, factory reset, unplugging / reconnecting, switching on/off, unloading/loading kernel extensions, booting the MacPro via firewire from a MacBook Pro, tried an other 828mkII interface, etc.
Nothing helps.

When it happens, the MOTU Midi interface is greyed out in Audio-Midi-Config.
Quicktime is hanging like 10sec when trying to play back sound.

Is there anyone with same problem or with a MacPro and no problems?

Thanks for any reply!!

Matthias


MacPro 2,66 GHz, 5GB Ram, X1900XT, OS X 10.4.8, MOTU 828mkII with 1.4.2 driver, LogicPro 7.2.3, Waves 5.9.1 with iLok, Midisport 2x2