Here's a new AppleAC97AudioVIA.kext so you can get stereo out of a VIA 8237R + ALC655 (I don't think the codec part matters as much as the controller)

Should work with any VIA 82xx chipset.

Hooray!

That's great, thanks dude!

I'll test it and report back.


Edit: Greeeeeat!! I have sound on both speakers now! It worked like a charm Thank you again pattjin!

My specs:

Southbridge: VIA VT8237 (487 BGA)
Sound chipset: Realtek ALC655

This is now on the HCL 10.4.5 Wiki

Worx here! pattjin U´re the man!! Just wanted to know how U managed this driver please give us more info so we could fix the input too!


One question: my volume slider doesn´t work at all is this normal?

Edit: Just tested my input and worx too! I´m very happy!!! No need 2 buy an expensive (or unexpensive) USB sound card!!

I knew that someone ´ll make it sooner or later

My volume slider works just fine.

Great Ill test this in my sse2 box right now

Jas / Proteo can one of U tell me why my volume slider does not work at all? The rest is OK but my volume slider is useless!

I think my chipset is VIA VT8233 not sure I´m gonna check it in Windows now

Also any ideas how to add this to a ISO DVD?

This is awesome! Thanks, I'll give this a try as soon as I get home this afternoon. I've long been searching for a cure to this left-channel only annoyance

20AppleAC97AudioEngine is not compatible with its superclass, 13IOAudioEngine superclass changed?
kextload: a link/load error occured for kernel extension /System/Library/Extensions/AppleAC97Audio.kext/
load failed for extension /System/Library/Extensions/AppleAC97Audio.kext/

this is in 10.4.6 so it seems this was compiled on a earlier build,too bad i was getting happy about stereo on this box

Could someone compile it please 4 10.4.6 now that I´m studying to upgrade?

skeewiff:

Actually I did nothing but replacing the file and repair its permissions with the usual commands. Are you having error messages during boot process?

JaS:

I'm using 10.4.6 Myzar patch, not sure if it's different from yours at this level. What chipset do you have?

I just got a chance to try this out, and it's not working at all for me. Now it's saying there are no audio devices on my computer. I replaced the original file with this new one, then did chown -R root:wheel /System/Library/Extensions/AppleAC97Audio.kext - Am I perhaps missing a step? I'm using a VIA 8237 + ALC655 chip, and the 10.4.6 DVD from JaS. Does this not work with JaS' 10.4.6?

Proteo: No error on booting just to say that I had this bug before I installed this kext the volume slide didn´t worked. I´m in 10.4.5

maybe myzars is using some of the old 4.5 frameworks all i know is in this 4.6 install it's not working.Send me the souce and ill compile it for 4.6

Copy and paste the new file to /System/Library/Extensions/. Choose authenticate in the dialog and enter your password. Replace the file.

Then open Terminal and type:

sudo -s

(enter your password)

cd /System/Library/Extensions

rm Extensions.mkext Extensions.kextcache

(no problem if one or both files don't exist)

chown -R root:wheel *.kext

kextcache -k /System/Library/Extensions

(exit terminal)

Applications > Disk Utility > select your volume and repair permissions

Quit and reboot.

That's exactly what i did and it worked like a charm.

huh?the superclass is not the same.it wont load.

20AppleAC97AudioEngine is not compatible with its superclass, 13IOAudioEngine superclass changed?
kextload: a link/load error occured for kernel extension /System/Library/Extensions/AppleAC97Audio.kext/
load failed for extension /System/Library/Extensions/AppleAC97Audio.kext/

Yoooohoooo, Pattjin,..... IT WORKS..

Great Work man.....

Thanks for making it stereo

Finally music in stereo !!!
Thanks a lot !!

Almost time to dump windows now...

It works for me too !

Excellent work !

You could try just copying the file AppleAC97Audio.kext/Contents/PlugIns/AppleAC97AudioVIA.kext/Contents/MacOS/AppleAC97AudioVIA, since that's really the only part that changed.

Of course, make it root:wheel, and all the permissions and stuff like that.

Now to see if I can figure out the other channels and maybe the onboard VIA8237 Ethernet as well.

Pat

For those that this work:

a) Is the onboard audio present in the system profiler?

Does work the volume slider? Mine is VIA8237 and doesn´t work

Also can you post what you changed in the source to fix the problem so i can compile the kext so it runs under my install.

So no matter what this kext wont work under your install DVD JaS? As of this moment anyway...?

well my install uses all the frameworks from 10.4.6 so it seems the user compiled this under myzars v3 10.4.6 update and it used some of the older frameworks.myzars ppf4 uses the 10.4.6 frameworks also.if he would send me the source I would compile it so it works on this version 10.4.6,too bad i didn't use the old frameworks heh ... lol

works a treat ... cheers

Eh, newer (frameworks) is better right? Is there some way to take that kext apart? I have no idea if that's even possible... I'd lend a hand if for some reason you needed it.

YEEEEES!!! My A8V Deluxe works now perfect... on 10.4.5.
Thanks alot.

BTW: When opening the preferences panel in itunes it freezes. Any hint?

It was built under 10.4.4, Xcode 2.2.1 from AppleAC97Audio-5 sources under 10.4.4 ppc (the code hasn't changed between 10.4.4, 10.4.5, 10.4.6)

I've given the source to JaS so he can build it for later versions.

Hey Pat as for Via 8237 Rhine Ethernet, it's working for me thanks to this post......

http://forum.osx86project.org/index.php?showtopic=15024

im usin 4.4/4.5 w/ myzar v3 patch, and this doesn't work...

Thank you pattjin for sending the code over to JaS. Now we can all enjoy stereo audio

Pat, you can try this marvell thread
http://forum.osx86project.org/index.php?act=ST&f=11&t=4851
I got my Marvell Yukon 88e8001 LAN (VIA K8T800/VT8237 Chipset) working

i'm so fcuking happy!!! thanks!!!

yes, i do it and now work well

many many thanks!

I ended up installing the Myzar 10.4.6 and this patch works like a charm. Thanks again pattjin. Has anyone had any luck installing this patch under JaS' 10.4.6?

From a clean install o 10.4.6 before this i have mono sound, after i have a error refered a the extension not loaded..well at this time no sound.
How can i revert to the initial file (where is located in the iso?). Thanks

Edit : This version of the driver is incompatible on a clean 10.4.6 install, doing an upgrade from 10.4.5 and installing it seems to work.

I have used PACIFIST to return back to the mono state, i will wait a 10.4.6 compiled version.


Thanks

Have you tried doing chown and repair permissions and everything? That might have something to do with it...

Thanks, works fine here on my Acer Ferrari laptop.
Finally sound from both speakers

Hey JaS, I've got the same problem, did you solved it???


Thanks

thanks a lot. sweet stereo sound.

It works on my KV2-lite mother board (AMD X2), now I have both speakers working.

Thanks alot for this great work.

Cougar

I hope JaS is working on this.. since i have left channel only by default... and that driver causes the sound to not work at all in 10.4.6 JaS!

me too. though he seems quite busy working with omni on the ATI drivers. still, once i have those and stereo, my laptop will be nearly perfect! woohoo!

I got this working. I couldnt figure it out because my audio appeared to be functioning (I could change the volume and everything) but it wouldnt work. I then connected my front panel audio connectors and suddenly I had sound but even with this patch it was still only left channel while plugged into the motherboard. So then I tried plugging my speakers into the front audio port and it worked perfectly.

Thanks alot for this

JaS has already made an Ati patch and omni i think... its an ppf u apply to the JaS dvd iso. JaS rocks!

I hope when he fix this patch it will work so i have stereo sound... osx is so cool!

WOWWWW!
That worked perfectly!!!! You are one of my heroes! WOOOHOOO! stereo sound on my notebook! YEAHA

that's great news for you, but i have to ask - how? as far as i knew, we were all still waiting on JaS for a 10.4.6 recompile...

This kext worked for me and my Asus P5VD1-X. I now get stereo analog out my rear speakers, but the front speakers are using S/PDIF which still doesn't work.

Strangely, in Sound control panel, if I set Line out AC 97 (PCM), I get playback too fast. But if I select SPDIF Out, I still get analog only, but playback is normal speed.

Simply install JaS 10.4.6 DVD and add in the AC97 kernel the plugin...
Runs great, no probs.

Rgds.

can you send me the updated source, I am working on the driver for the ATI SB400 sound and i figure that this code would be good to post in a fully compiled kext that should support all the AC97 sounds that aren't supported in the Azalia stuff. Thanks.

well, after waiting a bit, i decided to revert to 10.4.5. the kext in the very first post works perfectly. pity i had to do a complete reinstall, but stereo is sweeeeet