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C-Media 8738

Hiro_
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Hiro_
Hiro_
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Posted

Well guys, i tired of it try it do my AC'97 sound card works on OS X x86, so i buyed a off-board sound card C-Media 8738 5.1 , following a suggestion of a friend from here the of forum, and unfortunately i re-install my system and i not get none sound, it continue not works. Please will be than i buyed a sound card than not works in the x86 system? Please if someone know some information about this help me. :)

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Hiro_
Hiro_
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Guys i finded this thread in the forum http://forum.osx86project.org/index.php?sh...6&hl=8738&st=40, but when i go install the kext, it return this message:

 

junio-vitorinos-computer:~/Desktop/Deployment-1 root# ./install.sh
Installing CMI8738 kernel extension...
22com_CMI8738AudioEngine is not compatible with its superclass, 13IOAudioEngine superclass changed?
kextload: a link/load error occured for kernel extension /System/Library/Extensions/CMI8738PCIAudioDriver.kext
load failed for extension /System/Library/Extensions/CMI8738PCIAudioDriver.kext
(run kextload with -t for diagnostic output)
Installation finished - enjoy! dogbert <dogber1@gmail.com>

 

Please someone can help me? :weight_lift:

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Antman
Antman
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Posted

Junio Vitorino calm down... the reason it doesn't install is because it was meant for 10.4.1.. you just need to replace the kext the installer is using with this one: http://scifi.pages.at/ffm-2/CMI8738PCIAudi...6.4-1043.tar.gz

then run the install.sh file with that new kext file in there and away you go..

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Hiro_
Hiro_
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Generate this errour.

 

junio-vitorinos-computer:~/Desktop/CMI8738 junio$ ./install.sh

 

We trust you have received the usual lecture from the local System

Administrator. It usually boils down to these three things:

 

#1) Respect the privacy of others.

#2) Think before you type.

#3) With great power comes great responsibility.

 

Password:

Installing CMI8738 kernel extension...

22com_CMI8738AudioEngine is not compatible with its superclass, 13IOAudioEngine superclass changed?

kextload: a link/load error occured for kernel extension /System/Library/Extensions/CMI8738PCIAudioDriver.kext

load failed for extension /System/Library/Extensions/CMI8738PCIAudioDriver.kext

(run kextload with -t for diagnostic output)

Installation finished - enjoy! dogbert <dogber1@gmail.com>

junio-vitorinos-computer:~/Desktop/CMI8738 junio$

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Antman
Antman
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Posted

unzip to desktop

then open console

then type "sudo -s"

enter password

the type "cd Desktop"

then type "cd CMI8738Install10.4.3-6"

then type "./install.sh"

and your done.

 

This download is the one I have that is open source.. I take no credit but it is great driver. I give props to all those responsible..

CMI8738Install10.4.3_6.zip

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Hiro_
Hiro_
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Antman the kext load with success, but if i open the iTunes or i use something than use the sound, my system lock and send me this message in several languages.

 

"You need restart your computer. Hold down the power button for several seconds or press the restart button."

 

And not stoped with this. All time than i use some app than it use the sound, it send me the same message, to for it empty my trash the system lock, several troubles are happening after i loaded this kext, but i find than we are in the correct path.

 

 

My CMI8738 is 5.1 and not 5.5, Antman you find than this can be a trouble?

 

 

Antman if i it download the source code, the than i need for compile it for my system configuration?

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Antman
Antman
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Posted

ok.. bad news I am afraid.. that driver works perfect with the card that is not 5.1... if your card has the extra output for more than 2 speakers to be hooked up no one has eve developed a driver for that card. you will want to find the card that has just the 2 channel outputs. In my sound it says my sound card is: CMI8738-v37. this card is perfect. this page shows what one looks like.. http://www.amazon.com/gp/product/B0006UZJ6...glance&n=541966 That is the card I have to a tee.. if I remember the discussion when I got mine I was told the other one doesnt work. I am sure if someone were to work on that driver they could get it to work. Sorry guys..

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Antman
Antman
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then you need to post the kext you were using on 10.4.1 and it will need to be recompiled for 10.4.3-6, were you able to load the one i posted? Cause with my 2channel I have no probs I believe I steered away from the 5.1 because of this prob but if your 10.4.1 kext you were using worked than it can just be recompiled..

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Hiro_
Hiro_
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Well i go it desists of this, i buyed this sound card following an suggestion of a guy of the forum, than sayed for me than this card would work, then i see than i was misled, and lament than some people of the forum recommend something than not will work, i not understand much of the hardwares and OS X x86, then i waited it count with the help of the forum, and some peoples playing with the doubts the others, and make this. I unfortunately live and an country than technology is very expensive and i cannot it buy other sound card. Thank you a lot, Antman for all your help.

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Hiro_
Hiro_
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Hum, yeah you no caused me none problem, you very helped, and i thanks for this, but i go it try buy a genuine mac or a intel motherboard fully supported, for not it have this problems, the problem is than i'm student and in the Brazil, the particular university is very expensive and my money all go for it, without it count than a mac here, would buy three in the United States or Canada.

 

I sayed with Dogbert today and i'm waiting your answer.

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antiben
antiben
Posted
Posted

same problem here

 

i've tried some old pci 5.1 soundcard flying round.

on the packing its written that this card has a c-media 8738 chip

 

so i edit the info.plist with the right ids..

after successfully loading the kext, mac os x frezze with the black 'you need to restart' - screen

if i load the sound system-preference or play the first sound :/ ( also in safe boot mode :/ )

 

systemprofiler tells no soundcard.

its only recognized under pci-cards with type audio..

 

heres some dmesg output:

CMI8738AudioDevice[0x2561100]::initHardware(0x2158100)
CMI8738AudioDevice[0x2561100]::queryChip()
CMI8738AudioDevice[0x2561100]::createAudioEngine()
CMI8738AudioEngine[0x2561000]::init(0x256118c)
CMI8738AudioEngine[0x2561000]::initHardware(0x2561100)
CMI8738AudioEngine[0x2561000]::peformFormatChange(0x2594900, 0x13923af4, 0)
CMI8738AudioEngine[0x2561000]::setDACChannels(2, 3)
CMI8738AudioEngine[0x2561000]::setupSPDIFPlayback(1, 0)
CMI8738AudioEngine[0x2561000]::setupAC3Passthru(0)
CMI8738AudioEngine[0x2561000]::dumpRegisters()
 FUNCTRL0:	0x00000002
 FUNCTRL1:	0x00000d10
 CHFORMAT:	0xfff00003
 INT_HLDCLR:  0x00000000
 MISC_CTRL:   0x00000000
 LEGACY_CTRL: 0xfff0ca00
 CH0_FRAME1:  0xffffffff
 CH0_FRAME2:  0xffffffff
 bit shift:   0
 bit depth:   16
 sample rate: 44100

winxp device manager tells me fm801 (wdm)

vendor id 1319 ( ForteMedia )

dev id 0801

 

any ideas how to get more infos? (debugging)

whats the reasons? need help - much thx...

 

//edit

finally its only written on the packing - lol

maybe sansun (pulpy com.) swept their halls

and found some forte media fm801-au chips - well done..

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  • 3 weeks later...
bbogus_2008
bbogus_2008
Posted
Posted

hey everybody

 

..here´s how i fixed the same problem (..a little unusual way i guess..)

..downloaded the "Kernel_Debug_Kit_10.4.6_8l1119.dmg" from (..k**k my a$$, i´m not sure anymore, but i guess it was..)

 

http://developer.apple.com/hardwaredrivers/

 

..made reboot - pressed "Shift" ´till that that apple-ring ran

(in other words: i booted in Safe Mode :smoke:

..cleaned up

 

/System/Library/Caches/com.apple.kernelcaches

/System/Library/Extensions.kextcache

/System/Library/Extensions.mkext

/Library/Caches/com.apple.ATS

in /Library/Caches, removed all "com.apple.LaunchServices"

(found that on an external link: www.macosxhints.ch - after googling)

 

..took IOAudioFamily.kext out of that package, replaced that one in

/System/Library/Extensions/

(..i placed CMI8738PCIAudio.kext there before cleaning..)

 

went to terminal:

sudo -s

<keyword>

chmod -R 755 /System/Library/Extensions/

chown -R root:wheel /System/Library/Extensions/

kextcache -k /System/Library/Extensions

kextload /System/Library/Extensions/IOAudioFamily.kext

kextload /System/Library/Extensions/CMI8738PCIAudioDriver.kext/

 

..and: here we go again with sound [REEL BIG FISH RULES!!!] after a little reboot :D

 

*gg* ..did this (detailed statement) for all that poor little su**ers, that -i hope so- won´t go as nuts as me by searching for a little help..

 

enjoy

 

[if you can´t find that .dmg you might contact me - it´s just about 24.4 mb and my

a«u®€u$ is running most of time..]

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  • 1 month later...
DJSpike
DJSpike
Posted
Posted

Hello,

 

I got a L-8738-6C (5.1 version) to work great with JaS 10.4.7 using the IOAudioFamily.kext from JaS 10.4.6 and the CMI8738PCIAudioDriver.kext

;)

 

Big thanks to dogbert for this driver.

I hope we'll have audio input working too one day. Keep the good job !

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  • 3 weeks later...
  • 2 months later...
iawval
iawval
Posted
Posted
hey everybody

 

..here´s how i fixed the same problem (..a little unusual way i guess..)

..downloaded the "Kernel_Debug_Kit_10.4.6_8l1119.dmg" from (..k**k my a$$, i´m not sure anymore, but i guess it was..)

 

http://developer.apple.com/hardwaredrivers/

 

..made reboot - pressed "Shift" ´till that that apple-ring ran

(in other words: i booted in Safe Mode :)

..cleaned up

 

/System/Library/Caches/com.apple.kernelcaches

/System/Library/Extensions.kextcache

/System/Library/Extensions.mkext

/Library/Caches/com.apple.ATS

in /Library/Caches, removed all "com.apple.LaunchServices"

(found that on an external link: www.macosxhints.ch - after googling)

 

..took IOAudioFamily.kext out of that package, replaced that one in

/System/Library/Extensions/

(..i placed CMI8738PCIAudio.kext there before cleaning..)

 

went to terminal:

sudo -s

<keyword>

chmod -R 755 /System/Library/Extensions/

chown -R root:wheel /System/Library/Extensions/

kextcache -k /System/Library/Extensions

kextload /System/Library/Extensions/IOAudioFamily.kext

kextload /System/Library/Extensions/CMI8738PCIAudioDriver.kext/

 

..and: here we go again with sound [REEL BIG FISH RULES!!!] after a little reboot ;)

 

*gg* ..did this (detailed statement) for all that poor little su**ers, that -i hope so- won´t go as nuts as me by searching for a little help..

 

enjoy

 

[if you can´t find that .dmg you might contact me - it´s just about 24.4 mb and my

a«u®€u$ is running most of time..]

 

 

Great! BigBogus, after endless fighting this solved my CMI8738 problem: it's working great, I'm thinking that the Kext shipped has more strict version control than the one in the debug kit. Vielen Dank

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Luminaire
Luminaire
Posted
Posted

Humm. don't get it installed. BigBonus seemed like he had it right for me, but every time I check (and reboot) the system gives me "No Audio Devices".

 

So I checked the system profiler; told me there where no PCI cards except for my Network card... Weird.

 

It's a Sweex 4.1 Audio card with, of course, the CMI 8738 chipset.

 

I'll try it out in windows first, see if it works there at all >.>

 

 

// Edit

Nope, windows gives me a "No Resources error".

I should try inputting the vendor and device id's... Yeah, I'm trying that first.

 

Still odd Sys. Profiler doesn't pick anything up.

 

//Edit No.2

YES. Seemed a hardware error >.>. This works mighty fine right now!

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