Lee Revell wrote: > On Mon, Feb 23, 2009 at 8:09 AM, Alan Bromborsky <abrombo@xxxxxxxxxxx> wrote: > >> System: Asus M3N78 PRO (On board sound disabled) >> Sound Card: C-Media CMI8738 (Using ALSA mixer) >> OS: Ubuntu 8.10 amd64 (Upgraded 2/22/09) >> >> Problem: Using line-in on sound card to capture sound from verizon >> set-top-box. Sound is passed through to sound output (speakers) unless >> I mute line-in on alsa mixer >> > > All the time, or only if tvtime is running? > > >> but if I mute line-in I cannot capture >> sound under any circumstances. I wish sound output to happen only if >> application I am running requests it (tvtime for example). How do I set >> up sound system to accomplish this? >> >> > > This is a job of the app, not ALSA. > > Please post the output of "amixer". > > Lee > > Attached is the output of amixer. The line-in is passed to the speaker even if tvtime or anyother sound app is running or not. If I try to run vlc I get a feedback effect in the sound coming out of the speakers. There are no microphones on my system so any feedback would have to be internal. Output of amixer: Simple mixer control 'Master',0 Capabilities: pvolume Playback channels: Front Left - Front Right Limits: Playback 0 - 31 Mono: Front Left: Playback 31 [100%] Front Right: Playback 31 [100%] Simple mixer control '3D Control - Switch',0 Capabilities: pswitch pswitch-joined Playback channels: Mono Mono: Playback [off] Simple mixer control 'PCM',0 Capabilities: pvolume pswitch pswitch-joined cswitch 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 'Synth',0 Capabilities: pvolume pswitch pswitch-joined cswitch Playback channels: Front Left - Front Right Capture channels: Front Left - Front Right Limits: Playback 0 - 31 Front Left: Playback 25 [81%] [on] Capture [off] Front Right: Playback 25 [81%] [on] Capture [off] Simple mixer control 'Line',0 Capabilities: pvolume pswitch cswitch 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 'Line-In Mode',0 Capabilities: enum Items: 'Line-In' 'Rear Output' 'Bass Output' Item0: 'Line-In' Simple mixer control 'CD',0 Capabilities: pvolume pswitch cswitch 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',0 Capabilities: pvolume pvolume-joined cvolume cvolume-joined pswitch pswitch-joined cswitch cswitch-joined Playback channels: Mono Capture channels: Mono Limits: Playback 0 - 31 Capture 0 - 7 Mono: Playback 0 [0%] [off] Capture 0 [0%] [off] Simple mixer control 'Mic Boost',0 Capabilities: pswitch pswitch-joined cswitch cswitch-joined Playback channels: Mono Capture channels: Mono Mono: Playback [off] Capture [off] Simple mixer control 'Mic-In Mode',0 Capabilities: enum Items: 'Mic-In' 'Center/LFE Output' Item0: 'Center/LFE Output' Simple mixer control 'Phone',0 Capabilities: pvolume pvolume-joined pswitch pswitch-joined Playback channels: Mono Limits: Playback 0 - 7 Mono: Playback 0 [0%] [off] Simple mixer control 'IEC958 5V',0 Capabilities: pswitch pswitch-joined Playback channels: Mono Mono: Playback [on] Simple mixer control 'IEC958 Copyright',0 Capabilities: pswitch pswitch-joined Playback channels: Mono Mono: Playback [off] Simple mixer control 'IEC958 In Monitor',0 Capabilities: pswitch pswitch-joined Playback channels: Mono Mono: Playback [off] Simple mixer control 'IEC958 In Phase Inverse',0 Capabilities: pswitch pswitch-joined Playback channels: Mono Mono: Playback [off] Simple mixer control 'IEC958 In Select',0 Capabilities: pswitch pswitch-joined Playback channels: Mono Mono: Playback [off] Simple mixer control 'IEC958 In Valid',0 Capabilities: pswitch pswitch-joined Playback channels: Mono Mono: Playback [off] Simple mixer control 'IEC958 Loop',0 Capabilities: pswitch pswitch-joined Playback channels: Mono Mono: Playback [off] Simple mixer control 'IEC958 Output',0 Capabilities: pswitch pswitch-joined Playback channels: Mono Mono: Playback [off] Simple mixer control 'PC Speaker',0 Capabilities: pvolume pvolume-joined pswitch pswitch-joined Playback channels: Mono Limits: Playback 0 - 3 Mono: Playback 2 [67%] [on] Simple mixer control 'Aux',0 Capabilities: pvolume pswitch cswitch Playback channels: Front Left - Front Right Capture channels: Front Left - Front Right Limits: Playback 0 - 15 Front Left: Playback 15 [100%] [on] Capture [on] Front Right: Playback 15 [100%] [on] Capture [on] Simple mixer control 'Four Channel Mode',0 Capabilities: pswitch pswitch-joined Playback channels: Mono Mono: Playback [on] ------------------------------------------------------------------------------ Open Source Business Conference (OSBC), March 24-25, 2009, San Francisco, CA -OSBC tackles the biggest issue in open source: Open Sourcing the Enterprise -Strategies to boost innovation and cut costs with open source participation -Receive a $600 discount off the registration fee with the source code: SFAD http://p.sf.net/sfu/XcvMzF8H _______________________________________________ Alsa-user mailing list Alsa-user@xxxxxxxxxxxxxxxxxxxxx https://lists.sourceforge.net/lists/listinfo/alsa-user
