GA-B75M-D3P Audio Skipping

[phatsweep]

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.

 

[SubXero]

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.

 

[wildwillow]

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.

 

[kc429]

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!

 

[wildwillow]

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!

Glad it helped someone. Enjoy!

 

[phatsweep]

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

 

[balaclava9]

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!

 

[SubXero]

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.

 

[afishkind]

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

 

[balaclava9]

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