January 24, 2019


The ALC CODEC provides three pairs of stereo outputs with 5-bit volume The ALC CODEC supports host/soft audio from Intel ICHx chipsets as well as audio controller-based VIA/SIS/ALI/AMD/nVIDIA/ATI chipsets. Datasheets. ALC from Realtek Semiconductor Corp.. Find the PDF Datasheet, Specifications and Distributor Information. Realtek ALC datasheet, cross reference, circuit and application notes in pdf format.

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I saw a lot of people who reports a “no problem” usb setup with your computer chipset, have you tried to connect something to see if it works?

So what kexts i need to modify?


Posted June 10, Anyway I am anxious to go home and check system log and now that i know what ehci and uhci are maybe i will find a way Posted March 19, Anyone know how can i have datasgeet least sound back?

It boot very fast sec.


You need to be a member in order to leave a comment. By bogdan08March 19, in Hardware Components and Drivers. Posted July 18, One way to do it: In fact what i don’t find in this forum is the combination datasehet and alc codec that I have.

【ALC662/ALC655 REALTEK】Electronic Components In Stock Suppliers in 2018【Price】【Datasheet PDF】USA

Or sign in with one of these services. Or sign in with one of these services Sign in with Facebook. Posted May 19, Any hint will be high appreciated. Posted March eatasheet, Posted Aalc655 25, Posted July 21, Boot in vmware OK with sound and usb but boot native not working.

But my sound still muted and greyout-canot be unmuted and still no output sound device in System Preferences.

Sign in with Twitter. Finally i can boot. What “this are my 2 cents” mean?


I am using uphuck Posted April 7, I feel dtaasheet am in a dead end but i dont want to giveup. Sign up for a new account in our community.

Maybe its just a warning message. I have the same audio chip in my PC and the sound works only on the left channel, it seems to be a problem with the AppleAC97Audio.

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I read in wiki Datashfet that some of guys managed to install without problems and they have sound and usb on similar or identic configurations chipsets, controllers,processors with mine.

Boot with -v show: I was on the way to think that this is a zombie forum. After that my sound dissapear and in system prefererences show “no output devices found” and output volume is mute and is al6c55 and canot be unmuted.


System profiler show nothing in audio built datashfet section but i have sound in system preferences. Problem is that if i want to boot native i must change iousbfamily.

But now i need some help. I have USB and Ethernet onboard. I managed so far to load AC97Audio.