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

root@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@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