- May 3, 2012
- Intel DH67BL
- Core i7-2600K
- Intel HD 3000
- Mobile Phone
Which audio codec. For alc283 should be enough to simply install the kext.For Acer Aspire E5-771-74E7 with Realtek ALC283 (HiDef Audio), the info in this thread helped to fix the problem with my sound quality with headphones. The actual sound was similar to the hollow effect as if the connector had not been pushed in all the way. Somewhat garbled and missing frequencies.
 Download and install the CodecCommander kext port from RehabMan's site.
 Set fix using hda-verb in terminal (included in download above):
hda-verb 0x19 SET_PIN_WIDGET_CONTROL 0x25
 Enjoy headphone sound.
I've noticed I get occasional pops when there is no audio playing. I need to do more investigation.