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I am very sorry that brought you guys the inconvenience. I am very |
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surprise, too. Just as what I usually do, I opened the firefox, |
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logined my gmail account, then wrote and sent out the email which you |
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have received. |
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|
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On 10/19/07, Mick <michaelkintzios@×××××.com> wrote: |
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> On Thursday 18 October 2007, Chuanwen Wu wrote: |
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> > Hi, |
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> > I have a sound problem with my dell1400 laptop: I have no sound from |
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> > the speakers in the laptop but I can have sound from headphones after |
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> > I insert them. |
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> > |
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> > When I used $alsamixer -V all, I got these informations: |
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> > |
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> > Card: HDA Intel |
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> > │ Chip: SigmaTel STAC9228 |
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> > │ View: Playback Capture [All] |
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> > │ Item: Master [dB gain=-33.75, -33.75] |
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> > Item: PCM [dB gain=-10.00, -10.00] |
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> > Item: Front [dB gain=-45.00, -47.25] |
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> > Item: Mic as Output |
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> > Item: IEC958 |
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> > Item: ADCMux |
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> > Item: InMux [dB gain=30.00, 30.00] |
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> > Item: InVol [dB gain=16.50, 16.50] |
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> > |
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> > As you can see, Mic and IEC958's values are both 0. |
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> |
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> We probably can't see what you're describing. Can you unmute one at a time or |
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> increase their volume to check if someting gives? |
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As you know, the output of alsamixer is in graphics mode, so I felt |
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very uncomfortable when I described this problem and selected the |
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information from alsamixer. I appology for this. |
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Thanks goodness we have amixer: |
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|
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$ amixer |
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Simple mixer control 'Master',0 |
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Capabilities: pvolume pswitch |
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Playback channels: Front Left - Front Right |
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Limits: Playback 0 - 127 |
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Mono: |
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Front Left: Playback 127 [100%] [0.00dB] [on] |
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Front Right: Playback 127 [100%] [0.00dB] [on] |
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Simple mixer control 'PCM',0 |
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Capabilities: pvolume |
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Playback channels: Front Left - Front Right |
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Limits: Playback 0 - 255 |
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Mono: |
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Front Left: Playback 255 [100%] [0.00dB] |
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Front Right: Playback 255 [100%] [0.00dB] |
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Simple mixer control 'Front',0 |
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Capabilities: pvolume pswitch |
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Playback channels: Front Left - Front Right |
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Limits: Playback 0 - 127 |
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Mono: |
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Front Left: Playback 127 [100%] [0.00dB] [on] |
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Front Right: Playback 127 [100%] [0.00dB] [on] |
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Simple mixer control 'Mic as Output',0 |
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Capabilities: pswitch pswitch-joined |
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Playback channels: Mono |
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Mono: Playback [on] |
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Simple mixer control 'IEC958',0 |
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Capabilities: pswitch pswitch-joined |
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Playback channels: Mono |
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Mono: Playback [on] |
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Simple mixer control 'ADCMux',0 |
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Capabilities: cswitch |
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Capture channels: Front Left - Front Right |
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Front Left: Capture [on] |
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Front Right: Capture [on] |
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Simple mixer control 'InMux',0 |
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Capabilities: cvolume |
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Capture channels: Front Left - Front Right |
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Limits: Capture 0 - 4 |
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Front Left: Capture 4 [100%] [40.00dB] |
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Front Right: Capture 4 [100%] [40.00dB] |
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Simple mixer control 'InVol',0 |
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Capabilities: cvolume |
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Capture channels: Front Left - Front Right |
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Limits: Capture 0 - 14 |
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Front Left: Capture 14 [100%] [21.00dB] |
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Front Right: Capture 14 [100%] [21.00dB] |
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Simple mixer control 'Input Source',0 |
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Capabilities: enum |
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Items: 'Front Line' |
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Item0: 'Front Line' |
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|
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You can see above that, I have set the largest volume(100%) except the |
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"Mic as Output" and 'IEC958' and 'ADCMux', I am not very sure what |
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their functions are when controlling my sound card. |
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|
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|
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> |
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> > I always think that headphones are equal with speakers, because them |
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> > are both connected to the same thing in physics. |
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> > But now, why my headphones are aloud but my speakers are silent. |
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> > In Windows xp, both of them work very well. Headphones were after I |
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> > insert them and otherwise, the speakers loud . |
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> |
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> I too thought that this is a hardware issue . . . |
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I also consider the switching between headphone and speakers attached |
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as hardware. So I am also surprised when I found this problem. |
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|
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|
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I use the Alsa-driver-1.0.14-rc3, which is a unstable one. And the |
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weird thing is that *ONLY* this version's driver can drive my sound |
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card. I also tried the in-kernel(2.6.22-r2) one; the version 1.0.14, |
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which is the newest stable one that came out after 1.0.14-rc3, and |
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also the 1.0.15-rc2 one. |
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But none of them work. |
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> -- |
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> Regards, |
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> Mick |
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> |
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> |
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|
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Best regards, |
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|
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wcw |