macbook ich7 mixer

[Davide Bertola]

I have a first generation white macbook core duo 1.83ghz.
The problem is that alsa-mixer controls for "master" and "front" are wrong.
Master seems to be a lowpass filter, and front seems to be a highpass filter.

This is lspci -vvv for audio chip :

00:1b.0 Audio device: Intel Corporation 82801G (ICH7 Family) High Definition Audio Controller (rev 02)
        Subsystem: Sigmatel Unknown device 7680
        Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B-
        Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR-
        Latency: 0, Cache Line Size: 256 bytes
        Interrupt: pin A routed to IRQ 21
        Region 0: Memory at 90440000 (64-bit, non-prefetchable) [size=16K]
        Capabilities: <access denied>

if you need anything just ask.

[Eric Butler (codebutler)]

I've marked this as a duplicate of 102818 because a lot of discussion has been going on there, please repost your information on that bug.