[alsa-devel] Intel ICH6 with AD1986: Mic not working

Joerg Platte lists at naasa.net
Wed May 2 15:28:53 CEST 2007


Hi!

On my computer both microphones are not working but playback and all other 
audio stuff seems to work. I'm not sure if the microphones ever worked with 
alsa because I never tried it before. On windows they are working as 
expected, hence the hardware seems to be OK. Is there anything I can do to 
further debug this? Is it a known problem?

Below you can find more information about the hardware:

root at ds19:~> uname -a
Linux ds19 2.6.20-1-686 #1 SMP Tue Apr 24 21:52:11 UTC 2007 i686 GNU/Linux
(Debian kernel)
Doesn't work with 2.6.18 as well.

root at ds19:~> cat /proc/asound/card0/codec97#0/ac97#0-0
0-0/0: Analog Devices AD1986

PCI Subsys Vendor: 0x1734
PCI Subsys Device: 0x105a

Revision         : 0x02
Compat. Class    : 0x00
Subsys. Vendor ID: 0x0000
Subsys. ID       : 0x0000

Capabilities     : -headphone out-
DAC resolution   : 20-bit
ADC resolution   : 16-bit
3D enhancement   : No 3D Stereo Enhancement

Current setup
Mic gain         : +20dB [+20dB]
POP path         : pre 3D
Sim. stereo      : off
3D enhancement   : off
Loudness         : off
Mono output      : MIX
Mic select       : Mic1
ADC/DAC loopback : off
Double rate slots: 10/11
Extended ID      : codec=0 rev=2 AMAP LDAC SDAC CDAC DSA=0 SPDIF DRA VRA
Extended status  : SPCV LDAC SDAC CDAC SPDIF=10/11 VRA
PCM front DAC    : 48000Hz
PCM Surr DAC     : 48000Hz
PCM LFE DAC      : 48000Hz
PCM ADC          : 48000Hz
SPDIF Control    : Consumer PCM Copyright Category=0x22 Generation=1 
Rate=48kHz

                    Gain     Inverted  Buffer delay  Location
Master Out       :   0.0 dBV    -      16/fs         Rear I/O Panel
AUX Out          :   0.0 dBV    -      16/fs         Rear I/O Panel
Center/LFE Out   :   0.0 dBV    -      16/fs         Rear I/O Panel
Mic 1            :   0.0 dBV    -      16/fs         Rear I/O Panel
Mic 2            :   0.0 dBV    -      16/fs         Rear I/O Panel
Line In          :   0.0 dBV    -      16/fs         Rear I/O Panel



AD18XX configuration
Unchained        : 0x1000,0x0000,0x0000
Chained          : 0x0000,0x0000,0x0000

root at ds19:~> cat /proc/asound/card0/codec97#0/ac97#0-0+regs
0:00 = 0090
0:02 = 0404
0:04 = 0606
0:06 = 0006
0:08 = 0000
0:0a = 0000
0:0c = 801f
0:0e = 0040
0:10 = 9f9f
0:12 = 0606
0:14 = 0000
0:16 = 9f9f
0:18 = 0606
0:1a = 0000
0:1c = 0000
0:1e = 0000
0:20 = 0000
0:22 = 0000
0:24 = 0000
0:26 = 800f
0:28 = 0bc7
0:2a = 05f1
0:2c = bb80
0:2e = bb80
0:30 = bb80
0:32 = bb80
0:34 = 0000
0:36 = 0300
0:38 = 0202
0:3a = 2a20
0:3c = 0000
0:3e = 0000
0:40 = 0000
0:42 = 0000
0:44 = 0000
0:46 = 0000
0:48 = 0000
0:4a = 0000
0:4c = 0000
0:4e = 0000
0:50 = 0000
0:52 = 0000
0:54 = 0000
0:56 = 0000
0:58 = 0000
0:5a = 0000
0:5c = 1000
0:5e = 0000
0:60 = 8080
0:62 = 0000
0:64 = 0000
0:66 = 0000
0:68 = 0000
0:6a = 0000
0:6c = 8080
0:6e = 8080
0:70 = 0000
0:72 = 0000
0:74 = 1001
0:76 = 7c7c
0:78 = 0000
0:7a = 0000
0:7c = 4144
0:7e = 5378

root at ds19:~> cat /proc/asound/cards
 0 [ICH6           ]: ICH4 - Intel ICH6
                      Intel ICH6 with AD1986 at 0xf0140800, irq 16

root at ds19:~> lspci
00:00.0 Host bridge: Intel Corporation 82915G/P/GV/GL/PL/910GL Memory 
Controller Hub (rev 04)
00:02.0 VGA compatible controller: Intel Corporation 82915G/GV/910GL 
Integrated Graphics Controller (rev 04)
00:02.1 Display controller: Intel Corporation 82915G Integrated Graphics 
Controller (rev 04)
00:1c.0 PCI bridge: Intel Corporation 82801FB/FBM/FR/FW/FRW (ICH6 Family) PCI 
Express Port 1 (rev 03)
00:1c.1 PCI bridge: Intel Corporation 82801FB/FBM/FR/FW/FRW (ICH6 Family) PCI 
Express Port 2 (rev 03)
00:1c.2 PCI bridge: Intel Corporation 82801FB/FBM/FR/FW/FRW (ICH6 Family) PCI 
Express Port 3 (rev 03)
00:1c.3 PCI bridge: Intel Corporation 82801FB/FBM/FR/FW/FRW (ICH6 Family) PCI 
Express Port 4 (rev 03)
00:1d.0 USB Controller: Intel Corporation 82801FB/FBM/FR/FW/FRW (ICH6 Family) 
USB UHCI #1 (rev 03)
00:1d.1 USB Controller: Intel Corporation 82801FB/FBM/FR/FW/FRW (ICH6 Family) 
USB UHCI #2 (rev 03)
00:1d.2 USB Controller: Intel Corporation 82801FB/FBM/FR/FW/FRW (ICH6 Family) 
USB UHCI #3 (rev 03)
00:1d.3 USB Controller: Intel Corporation 82801FB/FBM/FR/FW/FRW (ICH6 Family) 
USB UHCI #4 (rev 03)
00:1d.7 USB Controller: Intel Corporation 82801FB/FBM/FR/FW/FRW (ICH6 Family) 
USB2 EHCI Controller (rev 03)
00:1e.0 PCI bridge: Intel Corporation 82801 PCI Bridge (rev d3)
00:1e.2 Multimedia audio controller: Intel Corporation 82801FB/FBM/FR/FW/FRW 
(ICH6 Family) AC'97 Audio Controller (rev 03)
00:1f.0 ISA bridge: Intel Corporation 82801FB/FR (ICH6/ICH6R) LPC Interface 
Bridge (rev 03)
00:1f.1 IDE interface: Intel Corporation 82801FB/FBM/FR/FW/FRW (ICH6 Family) 
IDE Controller (rev 03)
00:1f.2 IDE interface: Intel Corporation 82801FB/FW (ICH6/ICH6W) SATA 
Controller (rev 03)
00:1f.3 SMBus: Intel Corporation 82801FB/FBM/FR/FW/FRW (ICH6 Family) SMBus 
Controller (rev 03)
07:00.0 Ethernet controller: Broadcom Corporation NetXtreme BCM5751 Gigabit 
Ethernet PCI Express (rev 01)

root at ds19:~> lsmod | grep snd
snd_intel8x0           31420  1
snd_ac97_codec         89412  1 snd_intel8x0
ac97_bus                2432  1 snd_ac97_codec
snd_pcm_oss            39232  0
snd_mixer_oss          15488  1 snd_pcm_oss
snd_pcm                72036  3 snd_intel8x0,snd_ac97_codec,snd_pcm_oss
snd_timer              20964  1 snd_pcm
snd                    48196  8 
snd_intel8x0,snd_ac97_codec,snd_pcm_oss,snd_mixer_oss,snd_pcm,snd_timer
soundcore               7616  1 snd
snd_page_alloc          9736  2 snd_intel8x0,snd_pcm

regards,
Jörg
Grüße,
Jörg

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