GA-B75M-D3P Audio Skipping

Background: This is my 2nd Hackintosh (1st one was a bulletproof install of 10.6.8, but all fingers pointed toward building a new one to start using my pretty new 27" ACD)

Wanted as few headaches as possible so bought the following from the Custo2012 Guide:
Intel Core i3-3225
GA-B75M-D3P (Flashed from F3 to F5 BIOS)
8GB Corsair 1600Mhz DDR3

UniBeast - Mountain Lion 1.5.3
Fresh install with USB from 10.8.2 installer
MultiBeast - Mountain Lion 5.0.2 with the following ticks:


After a couple nights of ironing out small problems, I finally got ALMOST everything working. The only remaining problem is the audio skips I've been getting. The 27" ACD works perfectly on the HD4000 Displayport (including iSight, built-in mic and speakers).

ACTUAL PROBLEM:
Every 1-3 songs, the audio will cut out for a split second once or twice. You'd never notice unless you were listening to music or watching youtube videos or something. I think I've narrowed it down to the drivers for the Realtek 887 audio because the problem doesn't happen when I switch the audio output to the ACD's speakers. I also booted into Win7 and listened to a full album using the onboard 887 without a single skip.

Am I not ticking off the right audio in Multibeast? Is this something other people have witnessed before? My deepest thanks in advance.

Not having that problem myself. I also used Toleda's DSDT free patched AppleHDA for 887 (the one you ticked off) and never experienced that at all as far as I can remember. I am now using a DSDT which I compiled myself and patched AZAL to HDEF so I can use the blue and pink ports on the rear panel to give Rear Left/Right and Centre / SubWoofer on my 5.1 sound system. (you have to have a DSDT for 5.1 audio) That just uses the patched DSDT version of the same patched AppleHDA. Sorry... no audio skips here.

I had a very similar problem with 889 Digital output. When i streamed movies from my server it worked fine. But when I switched to itunes or music from the server. i received sound cuts like the one you mentioned. I am unsure if this will help but the way I got around it was to change the frequency in the Audio Midi set up. It was outputting at 44100Mhz and after changing it to 48000Mhz I had no more sound cuts.

Hope it helps.

I think you just solved the problem I've been having.

Just in case anyone else is experiencing this: I used to get audio clicks that were extremely annoying when listening to music or watching a movie. Every second or so there'd be a slight pop or click sound. If the system was under heavy load, sometimes it'd be a long scratch or total distortion.

I just fiddled around with the settings in Audio MIDI Setup and it seems to be working. This had been going on for 2 years and although I tried things like getting the right DSDT for my hardware and every possible kext combination, I never found a solution that worked until now! Thank you!

kc429 said:

I think you just solved the problem I've been having.

Just in case anyone else is experiencing this: I used to get audio clicks that were extremely annoying when listening to music or watching a movie. Every second or so there'd be a slight pop or click sound. If the system was under heavy load, sometimes it'd be a long scratch or total distortion.

I just fiddled around with the settings in Audio MIDI Setup and it seems to be working. This had been going on for 2 years and although I tried things like getting the right DSDT for my hardware and every possible kext combination, I never found a solution that worked until now! Thank you!

Click to expand...

Glad it helped someone. Enjoy!

Thanks, wildwillow. Cycled through every possible combination of frequency and rate and still have skipping present... will press on!

hi

i'm having the same problem

i'm running the gigabyte ga-z77x-up5 th and using black line out. it's a UEFI board.

i listen to music or watch music and the audio occasionally drops out for a split second. it happens at irregular intervals: sometimes a few in a row, some times nothing for a few minutes. each time it drops out it leaves a pair of messages in the Console's Diagnostic & Usage Messages.


2/3/13 11:45:17.508 PM powerd[18]: PID 155(coreaudiod) Released NoIdleSleepAssertion "com.apple.audio.'AppleHDAEngineOutput:1B,2,1,2:0'.noidlesleep" 00:08:11 id:0x100000201 Aggregate:0x100242
com.apple.message.domain: com.apple.powermanagement.Assertions
Process: 155
Action: Released
AssertionName: NoIdleSleepAssertion
RetainCount: 0
com.apple.powermanagement: pmlog

2/3/13 11:45:25.251 PM powerd[18]: PID 155(coreaudiod) Created NoIdleSleepAssertion "com.apple.audio.'AppleHDAEngineOutput:1B,2,1,2:0'.noidlesleep" 00:00:07 id:0x100000210 Aggregate:0x100242
com.apple.message.domain: com.apple.powermanagement.Assertions
Process: 155
Action: Created
AssertionName: NoIdleSleepAssertion
com.apple.powermanagement: pmlog


i tried setting system sleep to never in energy saver, but it doesn't stop the problem ...

any help much appreciated!

I never had this problem when using a DSDT solution. I have now removed DSDT and use the non-dsdt AppleHDA together with HDEnabler2. I found that this causes my B75M-D3P to skip audio at random too. Then one day it stopped. It was then that I noticed I had the mic-in from my skype headset still plugged in (front mic port - using 5.1 audio channels on the rear ports). When I removed it, audio would skip randomly. If I leave it plugged in, audio is perfect. I do not have a technical explanation for this at all. I believe Toleda knows.

I would just like to echo that changing the frequency as described above worked for me as well.

it's a difficult problem to reproduce! but very annoying while working with video!

now it still skips occasionally, but it shows no associated noidlesleepassertion on the console.

i put the machine to sleep and woke it back up again, and it's skipping a lot less, but still skipping!

bleh! strange!

edit: for the ga-z77-up5 th (and some similar boards) see this thread: http://www.tonymacx86.com/audio/70741-alc898-audio-dropouts-rear-jack-only.html