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Level 1

0 points

Sound Keeps cutting out, and it gets weirder

Ok this is weird. But my Mac Pro has been solid since I got it. I've been using computers for nearly 25 years now, and I've never seen memory affect sound, but here goes.

I installled 2gb of new memory ... Kingston Fully buffered 1gb chips, reviews all said work great with mac pro. I am using a Motu 828 Mk II. Well since the new memory, my sound keeps cutting off every once in a while. The computer still recognizes the Motu as the sound device (through firewire), but no sound, and I have to reboot to get it back.

Has anyone had experience with the Motu (which didn't do this for the entire first month until memory) cutting out on the mac pro after a while, or does anyone know of a problem with sound cutting out on Mac Pros? Memory causing sound to stop (extremely weird)?

Thanks

Mac Pro, Mac OS X (10.4.8)

Posted on Oct 20, 2006 8:57 AM

115 replies

Nov 28, 2006 7:21 AM in response to Maxwell Sheffield

No, we can't. The MOTU 828 we're talkin' about is FireWire only, and has no USB connector.

I think that the bug could be linked with the ATI configuration has sense.

But I'm not sure that is a MOTU only problem. As I said, I heard that someone had the same problem with a SME interface (FW).

Nov 28, 2006 10:59 AM in response to chaosngn

Same problem here. Motu 828 (mkI), Mac Pro, 3 gig RAM, X1900 etc.
This *****...

Nov 28, 2006 11:36 AM in response to Haakon Flemmen

It seems you all own the ATI 1900 video card... :-( Could it be that possible this particular issue could be a kind of incompatibility between this card and the firewire interface ? I don't know how, since they don't seem to share anything....

Max

Nov 28, 2006 1:10 PM in response to chaosngn

I just got through to MOTU tech support and they had me cycle through the Optical Inputs on the MOTU Audio setup for the 828. So it's not on the General tab, but the 828 tab, cycle the Optical inputand output from none, to ADAT and then back to None. This seems to work for now. I will test more thoroughly and report back what I find

MacPro Quad 3.0 4GB RAM ATI x1900 500 GB HD Mac OS X (10.4.8)

Nov 28, 2006 1:33 PM in response to Jonathan Pabalate

I did that, during my first tests two weeks ago, and I didn't see any difference.

I used this hint (disable and enable ADAT) a few monthes ago when the interface had curious sound : there was a difference between ADAT status in Audio MIDI setup and on the MOTU console.

But, with sound lost bug on the Mac Pro, disable ADAT changes nothing, as far as I know.

Nov 28, 2006 1:37 PM in response to jjardoino

ya, for me, this trick doesn't work as well...

Nov 28, 2006 1:49 PM in response to chaosngn

Motu tech support suggested resetting the SMC. Now, I don't know what that is good for. Has anyone tried?

BTW: The otherwise helpful guy at support said he had never heard about this problem before. Sounds strange considering these discussions on the web...

Nov 28, 2006 5:51 PM in response to Haakon Flemmen

I am reporting back to you that the solution of changing the optical inputs and outputs did not solve my problem... for that matter it took a couple reboots of both the CPU and the MOTU 828 to get it back..... fustrating... back to square one. I will call MOTU again tomorrow afternoon.

BTW, the problem also exists with a new traveler that I borrowed from a friend

dmoffitt

Level 1

15 points

Nov 29, 2006 6:49 AM in response to chaosngn

I too am having problems with sound dropping out after a short while / after pausing / after leaving applications. I am using a MOTU Traveler FW interface on a MacPro 2.66 / 4GB RAM (oem) and it's VERY frustrating. MOTU points the finger at Apple who points it back at them...

I've tried it on different FW connectors, bus-powered, AC-powered, pretty much anything I could think of. What is MOST puzzling is it worked GREAT on my MacBook Pro and previous G5.

dmoffitt

Level 1

15 points

Nov 29, 2006 6:51 AM in response to dmoffitt

... and I too have the X1900 😟 Seems to be a connection, not cool.

Nov 29, 2006 4:49 PM in response to chaosngn

Having the same problem here. Mac Pro, 6GB RAM, X1900.

My Metric Halo Mobile I/O cuts out after a few hours of use. I bought a PCIe Firewire card thinking that it was the ports or the motherboard, but the problem is still there.

Hopefully this will be a software fix on Apple's end.... and soon!!!

Nov 29, 2006 7:30 PM in response to kennmichael

so apparently (and what I initially thought) it isn't a Motu issue but an Apple related hardware issue... not Intel as well.

Could be:
a) ATI X1900
b) firewire port/s
c) MAC OS X 10.4.8 release

or a combination of two/three of them.

dmoffitt

Level 1

15 points

Nov 29, 2006 11:45 PM in response to savemefromtears

has anyone else tried an aftermarket FW card / had luck with something along those lines? iirc, the Avid hardware breakout box for Xpress Pro had issues w/ internal FW on some pre-intel Macs.

Nov 30, 2006 3:25 AM in response to savemefromtears

Out of curiosity, has anyone been able to find anything out about this over at Uniciornation.com? I have tried unsuccessfully... someone else may have better luck.

Nov 30, 2006 3:38 AM in response to Jonathan Pabalate

I wanted to talk about that, but I forgot...

I tried to reach UnicorNation. The FAQ says that it's no necessary to be registered to read, but it's not true. So I tried to register. And never received the confirmation mail. I tried to register with another name and mail. And never received the confirmation mail. I wrote to mails to the admin, explaining the problem and telling why it was important to read the post when one has a Mac Pro and a MOTU FW. No answer...

So I can't learn more about the problem in this forum linked by MOTU...

Sound Keeps cutting out, and it gets weirder