Re: [alsa-devel] Strange sound of IDT 82hd206xx6 at font port in AC97 mode
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于 2014年02月04日 17:01, Raymond Yau 写道:
Check the front audio connector of your motherboard in the user manual
Check the front audio panel specification of your computer chassis whether support Jack detection of headphone and mic
Only a few multi channel AC97 2.3 codecs (e.g. ALC850) support jack detection and most AC97 front audio panel does not have jack detection circuit
http://www.intel.com/support/motherboards/desktop/sb/cs-015851.htm
I can't hear the sound in some part of a film and I can hear the stranger accent of sound in the other part of a film(or a music). But all the 7.1 channel in the back ports can output the sound match my mircophone(all are the same).
The front audio panel headphone share the front channel signal only when playing multi channel audio
You need to use applications（e.g mplayer） which can down mix multi channel to stereo or select the stereo track instead of DTS of movie DVD when you are using headphone
I find the other thing, this headphone is for android mobile which combine controller, headphone and speaker. If you don't plug it into font port fully, it works. I have tested a nornal headphone, it works too.
Maybe it cause by my hardware, it is not alsa's problem.
Simple mixer control 'Swap Center/LFE',0 Capabilities: pswitch pswitch-joined penum Playback channels: Mono Mono: Playback [off]
Do this switch change the output of center and lfe when you run
speaker-test -c 6 -t wav -D hw:0,0
I only hear the font left and font right in both side of my headphone(the one for android)
seem that your are not using latest alsa driver
The alsa driver? Well, shall I try the latest kernel?
thank you ayaka
Simple mixer control 'Swap Center/LFE',0 Capabilities: pswitch pswitch-joined penum Playback channels: Mono Mono: Playback [off]
Do this switch change the output of center and lfe when you run
speaker-test -c 6 -t wav -D hw:0,0
I only hear the font left and font right in both side of my headphone(the one for android)
seem that your are not using latest alsa driver
The alsa driver? Well, shall I try the latest kernel?
Do the channel swap at the orange rack at rear panel ?
Do you have a speaker to test ?
This switch seem lost in the latest alsa driver
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于 2014年02月04日 22:16, Raymond Yau 写道:
Simple mixer control 'Swap Center/LFE',0 Capabilities: pswitch pswitch-joined penum Playback channels: Mono Mono: Playback [off]
Do this switch change the output of center and lfe when you run
speaker-test -c 6 -t wav -D hw:0,0
I only hear the font left and font right in both side of my headphone(the one for android)
seem that your are not using latest alsa driver
The alsa driver? Well, shall I try the latest kernel?
Do the channel swap at the orange rack at rear panel ?
Do you have a speaker to test ?
I am very sorry, I mistake the meanings of the mircophone and speaker. What I used is the headphone. For the android headphone At the front panel, not swap, I heared front left and front right in both side. At the rack panel, swaped. For the normal headphone(speaker) The font left and font right is switch the side.
This switch seem lost in the latest alsa driver
Thank you
http://www.alsa-project.org/db/?f=ce795f0f8e31b9eb5e35cc2fed572290d14b1cda
Simple mixer control 'Swap Center/LFE',0 Capabilities: pswitch pswitch-joined penum Playback channels: Mono Mono: Playback [off]
Do this switch change the output of center and lfe when you run
speaker-test -c 6 -t wav -D hw:0,0
I only hear the font left and font right in both side of my headphone(the one for android)
seem that your are not using latest alsa driver
The alsa driver? Well, shall I try the latest kernel?
Do the channel swap at the orange rack at rear panel ?
Do you have a speaker to test ?
At the front panel, not swap, I heared front left and front right in both side. At the rack panel, swaped. For the normal headphone(speaker) The font left and font right is switch the side.
Fix the device part of four line out from speaker to line out for ECS A780GM-A
No more "Rear Mic Jack Mode" , "Front Jack Mode" and "Line Jack Mode" after this fix when there is no internal speaker
those jack mode switches are redundant when the computer have both Line in jack and Mic jack
At Wed, 5 Feb 2014 15:57:21 +0800, Raymond Yau wrote:
http://www.alsa-project.org/db/?f=ce795f0f8e31b9eb5e35cc2fed572290d14b1cda
Simple mixer control 'Swap Center/LFE',0 Capabilities: pswitch pswitch-joined penum Playback channels: Mono Mono: Playback [off]
Do this switch change the output of center and lfe when you run
speaker-test -c 6 -t wav -D hw:0,0
I only hear the font left and font right in both side of my headphone(the one for android)
seem that your are not using latest alsa driver
The alsa driver? Well, shall I try the latest kernel?
Do the channel swap at the orange rack at rear panel ?
Do you have a speaker to test ?
At the front panel, not swap, I heared front left and front right in both side. At the rack panel, swaped. For the normal headphone(speaker) The font left and font right is switch the side.
Fix the device part of four line out from speaker to line out for ECS A780GM-A
No more "Rear Mic Jack Mode" , "Front Jack Mode" and "Line Jack Mode" after this fix when there is no internal speaker
those jack mode switches are redundant when the computer have both Line in jack and Mic jack
Could you give a proper patch that can be merged to upstream? See Documentation/SubmittingPatches.
thanks,
Takashi
participants (3)
-
Randy Li -
Raymond Yau -
Takashi Iwai