MOTU posted public beta drivers for El Capitan

[James Steele]

Just went by the MOTU site to see if there were new drivers out for older MOTU audio and MIDI interfaces that connect via USB. The only thing holding me back was drivers for my MTP/AV MIDI interface. MOTU has posted links to public beta drivers for El Capitan compatibility on this page:

http://www.motu.com/newsitems/motu-and-os-x-el-capitan

If you scroll down you'll see the links to the beta drivers in blue in the section listing the models of interface that are not yet compatible. I may get brave and give this a whirl.

[James Steele]

I went ahead and ran the MIDI driver installer while Yosemite was installed and am now downloaded El Capitan. What the heck... I'm living dangerously I guess.

[mikehalloran]

My iMac is not seeing my MTP AV USB with the beta drivers. Let's see if you have better luck.

I have al E-MU PROformance Plus hooked up playing the demo. The lights on my MTP tell me it's seeing the E-MU unit. I keep hitting the ReScan in Audio MIDI Setup but the icon is still greyed out.

[James Steele]

My iMac is not seeing my MTP AV USB with the beta drivers. Let's see if you have better luck.

I have al E-MU PROformance Plus hooked up playing the demo. The lights on my MTP tell me it's seeing the E-MU unit. I keep hitting the ReScan in Audio MIDI Setup but the icon is still greyed out.

Hmmm... well I sure hope I do have better luck because my main studio computer is in the midst of installing El Cap. I installed the new driver *before* upgrading to El Cap. If it doesn't work that way, I'll try reinstalling.

[James Steele]

Well, I'll tell you this much. El Capitan drives the final nail in the coffin for the AlphaTrack it appears, which is a real bummer. Upon rebooting, AlphaTrack is not seen. It seems the extension is incompatible I suppose. Also I can't reinstall the AlphaTrack driver. The installer fails.

This is a different issue than the 64-bit compatibility with DP. In that case, it was just the control surface bundle specific to DP that needed updating. El Capitan pretty much kills the actual USB driver for AlphaTrack. I should've seen this coming with all the problems related to USB with MOTU interfaces.

[James Steele]

I'm restoring to Yosemite from a Carbon Copy Cloner backup. Not only did El Capitan kill off AlphaTrack, but even with the new public beta MIDI driver, my MTP/AV was sending MIDI on all MIDI Outs instead of just the one for the particular device that a MIDI track was targeting.

[MIDI Life Crisis]

YIKES!

[mikehalloran]

I'm restoring to Yosemite from a Carbon Copy Cloner backup

Sounds like the prudent move. Reinstall Yosemite when you are done so that the Repair Partition is restored.

but even with the new public beta MIDI driver, my MTP/AV was sending MIDI on all MIDI Outs instead of just the one for the particular device that a MIDI track was targeting.

Yikes! Indeed. No doubt I am better off it not working at all for me.

[James Steele]

I'm restoring to Yosemite from a Carbon Copy Cloner backup

Sounds like the prudent move. Reinstall Yosemite when you are done so that the Repair Partition is restored.

Carbon Copy Cloner has a facility to do the Restore Partition so I chose that option. However, now that I've restored, I'm getting some squirreliness with playback on one of my projects. Will probably reinstall DP and reinstall MOTU Audio Drivers as well. I guess it couldn't hurt to reinstall Yosemite either. DP of course prompted me for my keycode, so I hope I didn't lose authorizations of too many plugs that use disk authorizations. I'm going to sound like a broken record here, but this is why I like iLok.

[James Steele]

Turns out the strangeness I was getting on playback was due to the LiquidMix app getting it's "Prevent App Nap" checkbox unchecked somehow when I went from El Cap back to Yosemite. Either way, glad to have my AlphaTrack back.

[Shooshie]

So, USB MTP-AV is a no-go with El Cap, even with the new MOTU drivers?

[James Steele]

So, USB MTP-AV is a no-go with El Cap, even with the new MOTU drivers?

For me. The problem is it behaved like a "dumb" MIDI interface. Let's say I had a device that was on a cable connected to MIDI Out 4 on the MTP/AV. When I select that device as the target of a MIDI track in DP, the MIDI for that track is sent out on all 8 MIDI Outs of the MTP/AV.

I didn't hang around El Capitan long enough to try and trouble shoot that one. The fact that the Alpha Track is completely a non-starter was enough for me. The basic USB driver for AlphaTrack is broken. This is more serious than the Control Surface Bundle for DP that was updated to work in DP's 64-bit mode. The Mac can't even "see" the Alpha Track anymore under El Capitan.

[monkey man]

You never used to live this dangerously, James. LOL

As always, I'm happy to let the kiddies play with the new toy on the block. Still on 10.9.2 here, and even so, I still dream of the 10.6.8 days...

[Killahurts]

I was just about to hook my MTP AV back up to do some MIDI stuff.. good info to have, although I'm not going to El Capitan any time soon- it apparently breaks a lot of software I use.

Man what is it with Apple? Do they rewrite the OS from the ground up every time? What could they possibly have to fundamentally change, in a system that is so mature? Is there new MIDI functionality? lol

[Shooshie]

Man what is it with Apple? Do they rewrite the OS from the ground up every time? What could they possibly have to fundamentally change, in a system that is so mature? Is there new MIDI functionality? lol

My questions, exactly.
This is ridiculous.

Shooshie