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Stuttering Audio ALC1150 - 10.12


Panamamax
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Good day...

 

i cannot get rid of stuttering Audio. i followed this installation guide:

 

 

i further bought a USB sound device that i can see in my Audio settings... hoping that it will fix my stuttering audio... however no improvement.

 

I can choose where i want to output my Audio, everywhere including the optical output and the USB outputs i can output the music, however all of them have stuttering sound with the sound coming and going 2-3 times per second...

 

any idea how to fix it? couldn't find much information about stuttering sound...

 

my system is 10.12 on a Supermicro X10SRA-F board that runs the ALC1150 chip...

post-1716125-0-06773700-1475548228_thumb.png

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yes you are right... the frequencys are different.. thats what terminal send out:

 

net.pktsched.verbose: 0

machdep.cpu.tsc_ccc.denominator: 0

machdep.cpu.tsc_ccc.numerator: 0

machdep.tsc.nanotime.generation: 2

machdep.tsc.nanotime.shift: 0

machdep.tsc.nanotime.scale: 1594410217

machdep.tsc.nanotime.ns_base: 0

machdep.tsc.nanotime.tsc_base: 219744514948

machdep.tsc.rebase_abs_time: 80834478698

machdep.tsc.at_boot: 1995381892

machdep.tsc.deep_idle_rebase: 1

machdep.tsc.frequency: 2693765538

 

and now whats the next step to compensate it?

Thanks for your help!

...Max

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You've got to check Clover for the value you currently have but I'm guessing it's near 100000. So 1995381892/2693765538 * whatyouhavenow ~= 74074. 

Put that in your clover config.plist! Or type it in on boot in Clover's options -> CPU -> bus freq.

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hmm this sounds very strange.., only by applying the Bus Speed, my performance changes from this to that... if i remove the frequency the speed goes up again...

 

will try and see if adding the msr199 kext will re-establish my performance once i change the bus speed tonight...

 

 

post-1716125-0-41272600-1475760382_thumb.png

post-1716125-0-45657100-1475760388_thumb.png

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hmm this sounds very strange.., only by applying the Bus Speed, my performance changes from this to that... if i remove the frequency the speed goes up again...

 

will try and see if adding the msr199 kext will re-establish my performance once i change the bus speed tonight...

You see, if you don't compensate the TSC frequency error, one second on your computer now actually lasts for 1,35s! That's exactly the multiplier for the scores...

It's not faster it's just WRONG. :)

 

So, you're not re-establisishing performance, you're getting it right!

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hmm... going to make some tests tonight... cause when its true what you say is that the actual power is the same... but i believe it feels slower.. i will make some tests and render a video file again the clock to see if there is a difference... also... why does the CPU frequency drop to 1,5 instead of 2? 

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hmm... going to make some tests tonight... cause when its true what you say is that the actual power is the same... but i believe it feels slower.. i will make some tests and render a video file again the clock to see if there is a difference... also... why does the CPU frequency drop to 1,5 instead of 2? 

It doesn't really drop, it just reads wrong due to multiplier times busfreq calculation... It doesn't matter at all.

 

You could do this in terminal to see how much your clock drifts instead of rendering...

ntpdate -d somentpserver

 

run it a few times and you'll see...

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Hey!

 

i have done the following tests: 

 

I added a 4,2Gb h264 4K DCI file from a phantom3 professional to iFFMPEG to cenvert the clip in Pro Res. i have done this without bus speed and kext, with bus speed onlz and with bus speed and kext

 

1. Without bus speed and kext: 5:45min

2. with bus speed, without kext: 5:50min

3. with bus speed and kext: 5:46min

 

i assume that it really does not matter at all...

what should do the kext? i cannot recognize any difference

 

 

 

in Cinebench i now run 1946cb insted of 2679cb i had before....

 

does this mean now that the 1946 is the real value and the 2679 is the wrong fake value calculated wrong having a wrong system clock?

 

Further if i run sysctl -a | grep tsc

 

i now have:

 

net.pktsched.verbose: 0

machdep.cpu.tsc_ccc.denominator: 0

machdep.cpu.tsc_ccc.numerator: 0

machdep.tsc.nanotime.generation: 2

machdep.tsc.nanotime.shift: 0

machdep.tsc.nanotime.scale: 2147485795

machdep.tsc.nanotime.ns_base: 0

machdep.tsc.nanotime.tsc_base: 214561511488

machdep.tsc.rebase_abs_time: 106283172869

machdep.tsc.at_boot: 1995378212

machdep.tsc.deep_idle_rebase: 1

machdep.tsc.frequency: 1999998000

 

is this sufficient adjusted or do i have to modify my 74074 bus speed again?

 

Thank you!

Max 

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That's pretty close, but 73902 will put you right on the spot! Just load the msr199.kext and you'll also get turbo!

And yes, those results were wrong as you had your clock running at wrong speed.

 

Make sure you have c1e or "halt to mwait" enabled in your bios!

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  • 2 months later...

good  day...

 

im working on a dual  build and time runns crazy   .

 

this is what i get:

 

i  have  to  set 7,25    in   the   bus   speed???

 

 

 

Last login: Thu Dec  8 21:11:52 on console

Maxs-Mac-Pro:~ max$ syssysctl -a | grep tsc

-bash: syssysctl: command not found

Maxs-Mac-Pro:~ max$ sysctl -a | grep tsc

net.pktsched.verbose: 0

machdep.cpu.tsc_ccc.denominator: 0

machdep.cpu.tsc_ccc.numerator: 0

machdep.tsc.nanotime.generation: 2

machdep.tsc.nanotime.shift: 2

machdep.tsc.nanotime.scale: 2690268146

machdep.tsc.nanotime.ns_base: 0

machdep.tsc.nanotime.tsc_base: 113725429977

machdep.tsc.rebase_abs_time: 277689912609

machdep.tsc.at_boot: 2893625398

machdep.tsc.deep_idle_rebase: 1

machdep.tsc.frequency: 399120744

Maxs-Mac-Pro:~ max$ 

 

 

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  • 2 months later...

Good day,

 

tried to revive my dual project after some time but have the same problem with the running clock...

 

One minute takes about 8,2 to 8,5 seconds at the moment.

 

i changed the bus speed to 100.000 and this is what i get:

 

Maxs-Mac-Pro-2:~ max$ sysctl -a | grep tsc

net.pktsched.verbose: 0

machdep.cpu.tsc_ccc.denominator: 0

machdep.cpu.tsc_ccc.numerator: 0

machdep.tsc.nanotime.generation: 2

machdep.tsc.nanotime.shift: 2

machdep.tsc.nanotime.scale: 2684354560

machdep.tsc.nanotime.ns_base: 0

machdep.tsc.nanotime.tsc_base: 139030667766

machdep.tsc.rebase_abs_time: 340342613280

machdep.tsc.at_boot: 2893622398

machdep.tsc.deep_idle_rebase: 1

machdep.tsc.frequency: 400000000

Maxs-Mac-Pro-2:~ max$ 

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