toleda
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5/2/12 - An update is available for this AppleHDA.kext; see 892_Lion_AppleHDA
The ALC892 edited Lion AppleHDA.kext is available for Lion 10.7.2 and motherboards with the Realtek ALC892 audio codec . Supports most Lion analog and digital audio capabilities. Users interested in capabilities beyond standard on board audio, such as, HDMI audio (discrete and HD3000 integrated), front panel audio and more, should consider this option. This kext supports two layout ids: layout_id 892 for full 892 analog audio on any 892 motherboard with or without discrete graphics card HDMI audio (Note 1) and layout_id 392 for 892 analog audio on 892 Sandy Bridge motherboards with HD3000 HDMI audio (Note 2).
Update Changes
1. Improved audio quality on all inputs, see Audio Input Level Setting
2. New binary edit, more reliable and stable
Clarification
1. Supports Optical 5.1 Surround Sound (DD/DTS - Note 5)
Benefits
1. 892 on board audio
2. HDMI audio, if configured
3. Front panel switching
4. Optical Surround Soundå
5. Improved audio quality
6. Less popping
7. Easy installation
8. Nearly native
Requirements
1. Realtek ALC892 audio codec
2. 10.7.2 - 64 bit kernel
3. dsdt w/HDEF/Layout_id is 0x7C 0x03 0x00 0x00
For HD3000 HDMI audio; dsdt w/HDEF/Layout_id is 0x88 0x01 0x00 0x00
Capabilities
Note: System Preferences/Sound/Output/Input and Keyboard - Mute is not available.
Audio Input Level Setting
1. Mic (Pink/Motherboard), Line In (Pink/Chassis) and Line In (Blue/Motherboard) levels are the same
2. Three Amplifiers in series
a. Source (mic, player, etc.): set volume high
b. OS X Input Amp (System Preferences/Sound/Input/device): set volume 50%
c. OS X Output Amp (System Preferences/Sound/Output/device, keyboard): set volume to personal preference
Options - AppleHDA binary
1. Standard - Less analog speaker popping
2. Native - no binary editing for audio codec, HDMI audio only (w/dsdt edits), kext testing
Installation
1. Downloads/892Beta_Lion_AppleHDA/See Read_Me_First-892_AppleHDA.kext
Attachments
1. 892Beta_Lion_AppleHDA
2. 892Beta_Lion_Audio_Screenshots
10.7.2 Nvidia HDMI Audio Issue
If your system boots to a black screen after installing this kext
1. Restore Original AppleHDA
a. Reboot with GraphicsEnabler=No
b. Install your AppleHDA.kext backup
2. See this thread (TBA)
Notes
1. HDMI audio dsdt and kext edits required
2. HD3000 HDMI audio dsdt and kext edits required.
3. Use Applications/Utilities/Audio MIDI Setup to configure analog 5.1 surround sound with 3 Line Outs
4. Requires Platforms.xml edit, adds Grey LineOut and deletes SPDIFOut. Use Audio MIDI Setup to configure analog 7.1 surround sound with 4 Line Outs
5. SPDIFOut Encoded Digital Audio (Surround Sound) requires Dolby Digital/DTS source, DD/DTS player (Plex, XBMC, Boxee) and DD/DTS sound system. Audi MIDI Setup/Audio Devices/Digital Output/ always shows 2 Channel Stereo. VLC encoded digital audio - no working solution at this time.
HDEF Edits:
Audio ID:892, layout-id: 37C
Code:
Device (HDEF)
{
Name (_ADR, 0x001B0000)
Method (_PRW, 0, NotSerialized)
{
Return (Package (0x02)
{
0x0D,
0x05
})
}
Method (_DSM, 4, NotSerialized)
{
Store (Package (0x04)
{
"layout-id",
Buffer (0x04)
{
0x7C, 0x03, 0x00, 0x00
},
"PinConfigurations",
Buffer (Zero) {}
}, Local0)
DTGP (Arg0, Arg1, Arg2, Arg3, RefOf (Local0))
Return (Local0)
}
}HD3000 HDMI audio only
Code:
Device (HDEF)
{
Name (_ADR, 0x001B0000)
Method (_PRW, 0, NotSerialized)
{
Return (Package (0x02)
{
0x0D,
0x05
})
}
Method (_DSM, 4, NotSerialized)
{
Store (Package (0x06)
{
"hda-gfx",
Buffer (0x0A)
{
"onboard-2"
},
"layout-id",
Buffer (0x04)
{
0x88, 0x01, 0x00, 0x00
},
"PinConfigurations",
Buffer (Zero) {}
}, Local0)
DTGP (Arg0, Arg1, Arg2, Arg3, RefOf (Local0))
Return (Local0)
}
}Credits
VHC888 http://www.insanelymac.com/forum/index.php?showtopic=140941
.:ErmaC:. http://www.insanelymac.com/forum/in...0ae2&showtopic=266531&view=findpost&p=1752351
blueking http://tonymacx86.com/viewtopic.php?p=244839#p244839
BigDonkey http://tonymacx86.com/viewtopic.php?p=244748#p244748
RevoGirl http://revogirl.wordpress.com/2012/01/15/how-to-patch-applehda-for-892-and-898-one-file/#respond
Screenshots
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