A NOTE has been added to this issue. ====================================================================== <https://bugtrack.alsa-project.org/alsa-bug/view.php?id=2240> ====================================================================== Reported By: Alexis_Cousein Assigned To: ====================================================================== Project: ALSA - driver Issue ID: 2240 Category: PCI - intel8x0 Reproducibility: always Severity: major Priority: normal Status: new Distribution: SuSE 10.1 Kernel Version: 2.6.16.13-4-smp ====================================================================== Date Submitted: 06-28-2006 18:21 CEST Last Modified: 06-29-2006 19:18 CEST ====================================================================== Summary: no microphone capture from motherboard onboard sound using intel8x0 driver Description: I'm using Skype on (ugh!) Windows for the moment, and microphone is fully functional. Plugged in the back of the PC (which should be Mic1); there's a second Mic input at the front. In SuSE 10.1, microphone doesn't work. krecord, arecord and Skype all record silence (or a constant pitch signal at very high gains), even though mixer settings appear correct. Evidently, some parts of ALSA do think they're recording from the microphone, because there is a 20dB boost to whatever constant pitch thinggummie is recorded when toggling the Mic boost in the mixer. Plugging Microphone in other port doesn't change anything; neither does selecting Mic2 in the mixer panel. lspci details: 00:1f.5 Multimedia audio controller: Intel Corporation 82801EB/ER (ICH5/ICH5R) AC'97 Audio Controller (rev 02) yggdrasil:/proc/asound/card0/codec97#0 # cat ac97#0-0 0-0/0: C-Media Electronics CMI9780 PCI Subsys Vendor: 0x1462 PCI Subsys Device: 0x0480 Revision : 0x01 Compat. Class : 0x04 Subsys. Vendor ID: 0x8086 Subsys. ID : 0x1234 Capabilities : DAC resolution : 16-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 Extended status : SPCV LDAC SDAC CDAC SPDIF=10/11 SPDIF Control : Consumer PCM Category=0x2 Generation=1 Rate=48kHz yggdrasil:/proc/asound/card0/codec97#0 # cat ac97#0-0+regs 0:00 = 0000 0:02 = 0808 0:04 = 0000 0:06 = 0000 0:08 = 0000 0:0a = 8000 0:0c = 0000 0:0e = 0040 0:10 = 9f1f 0:12 = 1f1f 0:14 = 8000 0:16 = 8000 0:18 = 0808 0:1a = 0000 0:1c = 0f0f 0:1e = 0000 0:20 = 0000 0:22 = 0000 0:24 = 0001 0:26 = 800f 0:28 = 0bc6 0:2a = 05f0 0:2c = 0000 0:2e = 0000 0:30 = 0000 0:32 = 0000 0:34 = 0000 0:36 = 8080 0:38 = 8080 0:3a = 2824 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 = 0004 0:5e = 0000 0:60 = 0401 0:62 = 8086 0:64 = 1234 0:66 = 0000 0:68 = 0000 0:6a = 0000 amixer output: Simple mixer control 'Master',0 Capabilities: pvolume pswitch pswitch-joined Playback channels: Front Left - Front Right Limits: Playback 0 - 31 Mono: Front Left: Playback 23 [74%] [on] Front Right: Playback 23 [74%] [on] Simple mixer control 'PCM',0 Capabilities: pvolume pswitch pswitch-joined Playback channels: Front Left - Front Right Limits: Playback 0 - 255 Mono: Front Left: Playback 230 [90%] [on] Front Right: Playback 230 [90%] [on] Simple mixer control 'Surround',0 Capabilities: pswitch Playback channels: Front Left - Front Right Mono: Front Left: Playback [off] Front Right: Playback [off] Simple mixer control 'Center',0 Capabilities: pvolume pvolume-joined pswitch pswitch-joined Playback channels: Mono Limits: Playback 0 - 31 Mono: Playback 31 [100%] [off] Simple mixer control 'LFE',0 Capabilities: pvolume pvolume-joined pswitch pswitch-joined Playback channels: Mono Limits: Playback 0 - 31 Mono: Playback 31 [100%] [off] Simple mixer control 'Side',0 Capabilities: pvolume pswitch enum Items: 'Front' 'Side' 'Center/LFE' 'Rear' Item0: 'Front' Item1: 'Front' Simple mixer control 'Line',0 Capabilities: pvolume pswitch pswitch-joined cswitch cswitch-exclusive Capture exclusive group: 0 Playback channels: Front Left - Front Right Capture channels: Front Left - Front Right Limits: Playback 0 - 31 Front Left: Playback 0 [0%] [off] Capture [off] Front Right: Playback 0 [0%] [off] Capture [off] Simple mixer control 'CD',0 Capabilities: pvolume pswitch pswitch-joined cswitch cswitch-exclusive Capture exclusive group: 0 Playback channels: Front Left - Front Right Capture channels: Front Left - Front Right Limits: Playback 0 - 31 Front Left: Playback 0 [0%] [on] Capture [off] Front Right: Playback 0 [0%] [on] Capture [off] Simple mixer control 'Mic',0 Capabilities: pvolume pswitch pswitch-joined cswitch cswitch-exclusive Capture exclusive group: 0 Playback channels: Front Left - Front Right Capture channels: Front Left - Front Right Limits: Playback 0 - 31 Front Left: Playback 31 [100%] [on] Capture [on] Front Right: Playback 31 [100%] [on] Capture [on] Simple mixer control 'Mic Boost (+20dB)',0 Capabilities: pswitch pswitch-joined Playback channels: Mono Mono: Playback [on] Simple mixer control 'Mic Select',0 Capabilities: enum Items: 'Mic1' 'Mic2' Item0: 'Mic1' Simple mixer control 'Video',0 Capabilities: pvolume pswitch pswitch-joined cswitch cswitch-exclusive Capture exclusive group: 0 Playback channels: Front Left - Front Right Capture channels: Front Left - Front Right Limits: Playback 0 - 31 Front Left: Playback 31 [100%] [off] Capture [off] Front Right: Playback 31 [100%] [off] Capture [off] Simple mixer control 'Phone',0 Capabilities: cswitch cswitch-exclusive Capture exclusive group: 0 Capture channels: Front Left - Front Right Front Left: Capture [off] Front Right: Capture [off] Simple mixer control 'IEC958',0 Capabilities: pswitch pswitch-joined cswitch cswitch-joined Playback channels: Mono Capture channels: Mono Mono: Playback [off] Capture [off] Simple mixer control 'IEC958 Capture Monitor',0 Capabilities: pswitch pswitch-joined Playback channels: Mono Mono: Playback [off] Simple mixer control 'IEC958 Capture Valid',0 Capabilities: pswitch pswitch-joined Playback channels: Mono Mono: Playback [off] Simple mixer control 'IEC958 Playback AC97-SPSA',0 Capabilities: volume volume-joined Playback channels: Mono Capture channels: Mono Limits: 0 - 3 Mono: 3 [100%] Simple mixer control 'IEC958 Playback Source',0 Capabilities: enum Items: 'AC-Link' 'ADC' 'SPDIF-In' Item0: 'SPDIF-In' Simple mixer control 'PC Speaker',0 Capabilities: pvolume pvolume-joined pswitch pswitch-joined Playback channels: Mono Limits: Playback 0 - 15 Mono: Playback 15 [100%] [off] Simple mixer control 'Aux',0 Capabilities: pvolume pswitch pswitch-joined cswitch cswitch-exclusive Capture exclusive group: 0 Playback channels: Front Left - Front Right Capture channels: Front Left - Front Right Limits: Playback 0 - 31 Front Left: Playback 31 [100%] [off] Capture [off] Front Right: Playback 31 [100%] [off] Capture [off] Simple mixer control 'Mono Output Select',0 Capabilities: enum Items: 'Mix' 'Mic' Item0: 'Mix' Simple mixer control 'Capture',0 Capabilities: cvolume cswitch cswitch-joined Capture channels: Front Left - Front Right Limits: Capture 0 - 15 Front Left: Capture 15 [100%] [on] Front Right: Capture 15 [100%] [on] Simple mixer control 'Mix',0 Capabilities: cswitch cswitch-exclusive Capture exclusive group: 0 Capture channels: Front Left - Front Right Front Left: Capture [off] Front Right: Capture [off] Simple mixer control 'Mix Mono',0 Capabilities: cswitch cswitch-exclusive Capture exclusive group: 0 Capture channels: Front Left - Front Right Front Left: Capture [off] Front Right: Capture [off] Simple mixer control 'DAC Clock Source',0 Capabilities: enum Items: 'AC-Link' 'SPDIF-In' 'Both' Item0: 'Both' Simple mixer control 'External Amplifier',0 Capabilities: pswitch pswitch-joined Playback channels: Mono Mono: Playback [off] ====================================================================== ---------------------------------------------------------------------- Alexis_Cousein - 06-29-06 19:01 ---------------------------------------------------------------------- Incidentally, googling reveals I'm not the only one having seen this problem - unfortunately the other user "resolved" the issue by giving up and buying another sound card: http://debianforum.de/forum/viewtopic.php?p=376068&sid=76136ce09f80ddd7772a307dccda623b Here's the actl -f ... store output: state.ICH5 { control.1 { comment.access 'read write' comment.type BOOLEAN comment.count 1 iface MIXER name 'Master Playback Switch' value true } control.2 { comment.access 'read write' comment.type INTEGER comment.count 2 comment.range '0 - 31' iface MIXER name 'Master Playback Volume' value.0 23 value.1 23 } control.3 { comment.access 'read write' comment.type BOOLEAN comment.count 1 iface MIXER name 'Center Playback Switch' value false } control.4 { comment.access 'read write' comment.type INTEGER comment.count 1 comment.range '0 - 31' iface MIXER name 'Center Playback Volume' value 31 } control.5 { comment.access 'read write' comment.type BOOLEAN comment.count 1 iface MIXER name 'LFE Playback Switch' value false } control.6 { comment.access 'read write' comment.type INTEGER comment.count 1 comment.range '0 - 31' iface MIXER name 'LFE Playback Volume' value 31 } control.7 { comment.access 'read write' comment.type BOOLEAN comment.count 2 iface MIXER name 'Surround Playback Switch' value.0 false value.1 false } control.8 { comment.access 'read write' comment.type BOOLEAN comment.count 1 iface MIXER name 'PC Speaker Playback Switch' value false } control.9 { comment.access 'read write' comment.type INTEGER comment.count 1 comment.range '0 - 15' iface MIXER name 'PC Speaker Playback Volume' value 15 } control.10 { comment.access 'read write' comment.type BOOLEAN comment.count 1 iface MIXER name 'Mic Playback Switch' value true } control.11 { comment.access 'read write' comment.type INTEGER comment.count 2 comment.range '0 - 31' iface MIXER name 'Mic Playback Volume' value.0 31 value.1 31 } control.12 { comment.access 'read write' comment.type BOOLEAN comment.count 1 iface MIXER name 'Mic Boost (+20dB) Switch' value true } control.13 { comment.access 'read write' comment.type BOOLEAN comment.count 1 iface MIXER name 'Line Playback Switch' value false } control.14 { comment.access 'read write' comment.type INTEGER comment.count 2 comment.range '0 - 31' iface MIXER name 'Line Playback Volume' value.0 0 value.1 0 } control.15 { comment.access 'read write' comment.type BOOLEAN comment.count 1 iface MIXER name 'CD Playback Switch' value false } control.16 { comment.access 'read write' comment.type INTEGER comment.count 2 comment.range '0 - 31' iface MIXER name 'CD Playback Volume' value.0 0 value.1 0 } control.17 { comment.access 'read write' comment.type BOOLEAN comment.count 1 iface MIXER name 'Video Playback Switch' value false } control.18 { comment.access 'read write' comment.type INTEGER comment.count 2 comment.range '0 - 31' iface MIXER name 'Video Playback Volume' value.0 31 value.1 31 } control.19 { comment.access 'read write' comment.type BOOLEAN comment.count 1 iface MIXER name 'Aux Playback Switch' value false } control.20 { comment.access 'read write' comment.type INTEGER comment.count 2 comment.range '0 - 31' iface MIXER name 'Aux Playback Volume' value.0 31 value.1 31 } control.21 { comment.access 'read write' comment.type BOOLEAN comment.count 1 iface MIXER name 'PCM Playback Switch' value true } control.22 { comment.access 'read write' comment.type ENUMERATED comment.count 2 comment.item.0 Mic comment.item.1 CD comment.item.2 Video comment.item.3 Aux comment.item.4 Line comment.item.5 Mix comment.item.6 'Mix Mono' comment.item.7 Phone iface MIXER name 'Capture Source' value.0 Mic value.1 Mic } control.23 { comment.access 'read write' comment.type BOOLEAN comment.count 1 iface MIXER name 'Capture Switch' value true } control.24 { comment.access 'read write' comment.type INTEGER comment.count 2 comment.range '0 - 15' iface MIXER name 'Capture Volume' value.0 15 value.1 15 } control.25 { comment.access 'read write' comment.type ENUMERATED comment.count 1 comment.item.0 Mix comment.item.1 Mic iface MIXER name 'Mono Output Select' value Mix } control.26 { comment.access 'read write' comment.type ENUMERATED comment.count 1 comment.item.0 Mic1 comment.item.1 Mic2 iface MIXER name 'Mic Select Capture Switch' value Mic1 } control.27 { comment.access read comment.type IEC958 comment.count 1 iface MIXER name 'IEC958 Playback Con Mask' value '0fff000f00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000 000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000 000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000' } control.28 { comment.access read comment.type IEC958 comment.count 1 iface MIXER name 'IEC958 Playback Pro Mask' value cf000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000 000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000 00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000 } control.29 { comment.access 'read write' comment.type IEC958 comment.count 1 iface MIXER name 'IEC958 Playback Default' value '0082000200000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000 000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000 000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000' } control.30 { comment.access 'read write' comment.type BOOLEAN comment.count 1 iface MIXER name 'IEC958 Playback Switch' value false } control.31 { comment.access 'read write' comment.type INTEGER comment.count 1 comment.range '0 - 3' iface MIXER name 'IEC958 Playback AC97-SPSA' value 3 } control.32 { comment.access 'read write' comment.type ENUMERATED comment.count 1 comment.item.0 AC-Link comment.item.1 ADC comment.item.2 SPDIF-In iface MIXER name 'IEC958 Playback Source' value SPDIF-In } control.33 { comment.access 'read write' comment.type BOOLEAN comment.count 1 iface MIXER name 'IEC958 Capture Valid Switch' value false } control.34 { comment.access 'read write' comment.type BOOLEAN comment.count 1 iface MIXER name 'IEC958 Capture Monitor' value false } control.35 { comment.access 'read write' comment.type BOOLEAN comment.count 1 iface MIXER name 'IEC958 Capture Switch' value false } control.36 { comment.access 'read write' comment.type ENUMERATED comment.count 1 comment.item.0 AC-Link comment.item.1 SPDIF-In comment.item.2 Both iface MIXER name 'DAC Clock Source' value Both } control.37 { comment.access 'read write' comment.type BOOLEAN comment.count 2 iface MIXER name 'Side Playback Switch' value.0 true value.1 true } control.38 { comment.access 'read write' comment.type INTEGER comment.count 2 comment.range '0 - 31' iface MIXER name 'Side Playback Volume' value.0 4 value.1 1 } control.39 { comment.access 'read write' comment.type ENUMERATED comment.count 1 comment.item.0 Front comment.item.1 Side comment.item.2 Center/LFE comment.item.3 Rear iface MIXER name 'Side Playback Route' value Front } control.40 { comment.access 'read write' comment.type BOOLEAN comment.count 1 iface MIXER name 'External Amplifier' value false } control.41 { comment.access 'read write user' comment.type INTEGER comment.count 2 comment.range '0 - 255' iface MIXER name 'PCM Playback Volume' value.0 230 value.1 230 } } Mhhh - setting "Mix" as the capture source in alsamixer gives me a 9dB (i.e. much louder) constant white noise to record, regardless of what is played. Bizarre thing, though, that alsamixer "Mix" capture source - "Mix" can't be selected in alsamixergui as a capture source, and is totally absent from kmix. ---------------------------------------------------------------------- tiwai - 06-29-06 19:18 ---------------------------------------------------------------------- Also, attach the whole content of /proc/asound/card0/codec97#0/ac97#0-0+regs file without trimming. alsamixergui is an obsoleted app, and kmix is known to buggy for many devices. Use alsamixer on terminal to be sure. Issue History Date Modified Username Field Change ====================================================================== 06-28-06 18:21 Alexis_Cousein New Issue 06-28-06 18:21 Alexis_Cousein Distribution => SuSE 10.1 06-28-06 18:21 Alexis_Cousein Kernel Version => 2.6.16.13-4-smp 06-29-06 17:36 tiwai Note Added: 0010670 06-29-06 18:36 Alexis_Cousein Note Added: 0010688 06-29-06 18:44 tiwai Note Added: 0010690 06-29-06 19:01 Alexis_Cousein Note Added: 0010693 06-29-06 19:18 tiwai Note Added: 0010697 ====================================================================== Using Tomcat but need to do more? Need to support web services, security? 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