Comment 19 for bug 513069
Revision history for this message
| Eric Chlebek (chlebek) wrote Re: ATI Technologies Inc RS880 Audio Device [Radeon HD 4200] very erratic | #19 |
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0e1f616
(Get the code!)
I have this device (RS880) on a Gateway laptop. I can't set the capture mode on the mic with amixer or alsamixer.
~$ sudo amixer
Simple mixer control 'Master',0
Capabilities: pvolume pswitch pswitch-joined penum
Playback channels: Front Left - Front Right
Limits: Playback 0 - 74
Mono:
Front Left: Playback 64 [86%] [-10.00dB] [on]
Front Right: Playback 63 [85%] [-11.00dB] [on]
Simple mixer control 'PCM',0
Capabilities: pvolume penum
Playback channels: Front Left - Front Right
Limits: Playback 0 - 255
Mono:
Front Left: Playback 252 [99%] [0.60dB]
Front Right: Playback 252 [99%] [0.60dB]
Simple mixer control 'IEC958',0
Capabilities: pswitch pswitch-joined penum
Playback channels: Mono
Mono: Playback [on]
Simple mixer control 'IEC958 Default PCM',0
Capabilities: pswitch pswitch-joined penum
Playback channels: Mono
Mono: Playback [on]
Simple mixer control 'Docking Mic',0
Capabilities: volume pswitch penum
Playback channels: Front Left - Front Right
Capture channels: Front Left - Front Right
Limits: 0 - 80
Front Left: 68 [85%] [-6.00dB] Playback [on]
Front Right: 68 [85%] [-6.00dB] Playback [on]
Simple mixer control 'External Mic',0
Capabilities: volume pswitch penum
Playback channels: Front Left - Front Right
Capture channels: Front Left - Front Right
Limits: 0 - 80
Front Left: 68 [85%] [-6.00dB] Playback [on]
Front Right: 68 [85%] [-6.00dB] Playback [on]
Simple mixer control 'Internal Mic',0
Capabilities: volume pswitch penum
Playback channels: Front Left - Front Right
Capture channels: Front Left - Front Right
Limits: 0 - 80
Front Left: 68 [85%] [-6.00dB] Playback [on]
Front Right: 68 [85%] [-6.00dB] Playback [on]
# amixer set "Internal Mic" capture
amixer: Invalid command!
I'm not sure why amixer considers that command to be invalid. Perhaps the control does not support capture mode. (Why not?)
In alsamixer, pressing spacebar on the control does nothing. It is also worth noting that alsamixer considers all the *Mic devices to be outputs as well as inputs. A little odd.