clipping sound on new iMac when Logix X is running

The Art Of Sound,

Thank you! You are the first person to give me a precise answer. Let's hope Roland brings the solution soon...

fishmax,

Please read my updated post above as Roland have now released the updated drivers 🙂

...and you are welcome.. Fingers crossed the new ones will work for you!

The Art Of The Sound,

I've already installed the Mavericks Version of the driver. Unfortunately, it does not fix the problem.

But it works fine on an old USB2 iMac withe Mavericks and Loic 10.0.4...

I don't think, Roland has updated the UBS3 issue in that Mavericks copmatible version.

i just did a bit more of testing as i had been quite brief earlier..

i find this quite interesting, not sure if it matches up with the experiences i've read earlier in the thread..

so i started with my apogee interface disconnected.. tried spotify, itunes, audio and video in safari and logic x. no isses at all, all programs running at once, switching between them etc.

then i connected my apogee card again, tried all apps again - no issues at all - until i started logic again. completely dead. i tried disabling and enabling core audio, select a audio device and back again, disconnected the apogee card and connected it again.. logic is still dead.. meter are moving etc, but no sound output.

i find this interesting, because that is not how it behaved the other day when it was really bad. when the sound died then it died in the whole system.. now it still works in other apps even when it's dead in logic..

i find it a bit curious, because at first i thought my ACTUAL issue is with the apogee driver as right now i can't provoke the problem with the internal card (didn't even try that before my first post). but when it actually dies in logic specifically, i again start to suspect apple, but still doesn't act like what i've read earlier.. core audio obviously still works on a system level as other apps than logic still produce sound, but not within logic itself.

i will try with my monitors as well (used headphones now) when i get a chance, they might show the issue clearer than my headphones which are fairly cheap..

Art of Sound... Your replies rock! Thanks for all the energy you've put into this discussion and sorting the info to get it making a bit of sense. We really should have 3 separate threads going on for these different problems!

Hey DeadPhish,

I would consider Airplay as onboard audio so that would confirm what you are asking/seeing as your issue.

Note: Just to clarify... #1 can happen only with onboard Audio but it can also happen with both onboard Audio and AIs too.

Cheers..

Nigel

fishmax,

Sorry to hear this..

Maybe it's time to contact Roland's support directly and make them aware you are continuing to have an issue despite using the new drivers... I suspect the problem will still be related to the USB3/USB2 incompatibiltiy issue... for some USB2 devices... and so hopefully they will work with you and help fix the problem.

kenny,

I believe the reason the issue starts once you fire up Logic is not because of Logic itself but because it 'activates' certain CoreAudio routines along with the AI's drivers which then 'brings down everything" so to speak...

Having said that it could be some very weird Logic issue but I suspect not to be honest.

The clue being it happens for you using the Apogee and that it doesn't always crash the internal Audio... and it could be that CoreAudio is crashing to different degrees and that could result in various side effects on different levels.. Usually, when I have seen similar things in the past it has come down to an AI Driver tripping up CoreAudio which then results in a full or partial crash of the Audio Subsystems... which seems to be what is happening to your setup.

Of course, this is just supposition on my behalf... but based on past expeirences.. that would be my best guess.

Hello again,

I've tested the same configuration Logic Pro 10.0.4, Mavericks, Octa-Capture 1.5.1 on a MacBook Retina USB 3.0., and there's no problem. The interface works fine...

So, it's maybe not a USB 3.0 problem, but an iMac related problem? Any idea?

I'll try to contact Roland to get more infos.

Thanks a lot to everybody

The Art Of Sound wrote:

kenny,

I believe the reason the issue starts once you fire up Logic is not because of Logic itself but because it 'activates' certain CoreAudio routines along with the AI's drivers which then 'brings down everything" so to speak...

This is true, Logic interfaces with core audio at a much higher priority plus it also access both audio Input and Output. Once the Input routines are are active sample rate and Logic audio/MIDI sync are dependent on the audio Input sync being accurate (and steady). If input sync is lost audio will go down.

fishmax,

It could be the differences between USB3 implementation on the new iMac compared to the retina... or it could be a difference in available power via the USB3 bus bewteen the two Macs...... Again, it's hard to say.... but yes, a call to Roland and to Apple would seem to be the best action to take.

Note: Have you tried making sure the only USB device plugged in to your imac is the Octa and testing?

The mismatch in audio rates is typically a driver/setup issue and has been noted in the past.. with various different audio devices on various different Macs and OS X versions... so I suspect your issue may be unrelated to the ones being described here but again, who knows!

Good luck...

i spoke too soon.. now all audio died on my whole system after a bit longer in logic. 🙂

Kenny,

kennylovrin wrote:

i spoke too soon.. now all audio died on my whole system after a bit longer in logic. 🙂

That makes more sense that would happen based on what we believe is going on...

Ah well....

i get that logic runs on different prio than the rest of the system, so i'm starting to think i don't actually have the problem of clicks and pops on the internal sound card.. but it sounds to me as if everyone with the fusion drive does have that problem, so would be weird if i didn't.

what i did notice now tough after sitting in logic for a bit was that at first no issues (like i wrote above), but then clicks and pops started happening, more and more, and then finally it just died. just to clarify, when i say clicks and pops, i mean it sounds exactly like running the interface with a too small buffer. it's just that it doesn't matter what i set the buffer to, it happens anyway.

i'm running logic on the internal interface now to see if it will start clicking as well.. so far it seems not, which leads me to believe my problem is my apogee card and not the machine..