Popping in Logic Pro X with 1024 buffer on late 2013 MBP !!! (mavericks)

Hi

Does the problem go away if you run with the Built-In audio?

CCT

The fact your interface works fine under a different OS with different drivers.. isn't a clear or good indication it's not your interface or it's driver's problem.

Are you absolutely sure nothing changed? (Like an update to Mavericks for example or the installation of a new app inbetween when it did work and now it doesn't?)

Have you tried the following?

Shut down your Mac

Unplug the Pod...

Start your Mac

Fully uninstall the Pod drivers...

Restart your Mac

Delete both Logic's own prefs and the CS prefs as per this Toubleshooting Guide,... Section #8

http://support.apple.com/kb/HT5859?viewlocale=en_US&locale=en_US

Restart your Mac..

Install the Pod drivers (latest versions)

Restart your Mac...

Wait until your mac has fully restarted....

Plug in the Pod...

Wait a few mins.... for the Pod to be correctly recognised and setup.. If it doesn't appear for some odd reason, restart the Mac one last time....

Test...

All the restarts are essential so please follow the steps exactly as laid out.... and see if that fixes things for you.

Ok.. Further troubleshooting is needed to lock down on the actual cause...

So, unplug all/any USB/FW devices (Including HDs etc) or hubs... except Pod and test using audio tracks only (Apple Loops)

If no popping then it's an external USB device causing it so...

Next add back any USB devices, one at a time and test again..... and see which, if any, causes the issue...

if you get popping without any other USB device, it's your Pod and/or its drivers or the specific USB port you are using....... So, try strarting your mac and then plugging Pod into different USB port or Powered USB Hub.... if you have one.. (without any other USB devices plugged in) and test again....

Popping only when you record? Does it also pop when you record using the built in mic rather than your GX?

I'm leaning torwards your HD might be a part of the cause.... How much free space left on your system drive? (if thats the drive you are also recording to)

So.. there is the clue.. If it only happens with your GX then that indicates the issue lies with the GX drivers or the connectivity to your Mac it seems... given the hardware works fine with a PC.

For this issue to suddenly happen means something has changed somewhere... be it an update in OS X... another program installed or updated or some hardware change.... or failure somewhere... or flakey drivers that have been affected by something else for some reason.

Have you checked the system logs around the time this issue began? (use the OS X Console app to take a look/see)

After a quick bit of googling I found this, which may be of interest....

http://line6.com/support/topic/4214-toneport-gx-not-working-well-with-mavericks/

Try googling Pod GX mavericks issue for more such posts and info....

Do you restart / turn off your Mac when you disconnect your Midi keyboard?

Or,,,

Do you just unplug/plug it in while your Mac is running? You could have popped your USB port which is why i asked you to try other USB2/3 ports on your Mac. .. and then test (and only plug in or /plug out when the Mac is off)

Also, there is a known issue regarding power or lack of it... when using some USB2 devices plugged into a USB3 port.... One common resolution for this issue is to plug the USB2 device into a powered USB2 hub that is then plugged into a USB3 port.... but its not a fix all.

So, in summary, its most likely going to be your Pod and it's OS X software drivers/software (simply because many people report similar issues using that hardware range) the USB2/3 issue which is well documented.. and/or something else connected to or installed in your system... or simply User error, which cannot be ruled out at this time 🙂