2012-10-22 下午3:38 於 "John Frankish" <<a href="mailto:j-frankish@slb.com">j-frankish@slb.com</a>> 寫道： > > > > On 10/22/2012 08:50 AM, John Frankish wrote: > > > Using pulseaudio-2.1 with a dell latitude e6220 and the internal mono microphone: > > > > > > The pavucontrol "configuration" tab correctly shows the internal microphone as mono. why do you say the internal mic is mono ? do you mean only left channel has signal or left and right channel out of phase ? if the default Amp-In , the control should be a internal mic boost instead of internal mic capture volume the capture volume control is at node 0x17 which support R/L (swap of left and right channel) Default Amp-In caps: ofs=0x00, nsteps=0x03, stepsize=0x27, mute=0 Node 0x11 [Pin Complex] wcaps 0x400483: Stereo Amp-In Control: name="Internal Mic Capture Volume", index=0, device=0 ControlAmp: chs=3, dir=In, idx=0, ofs=0 Amp-In caps: N/A Amp-In vals: [0x01 0x01] Pincap 0x00000024: IN Detect Pin Default 0xd5a30130: [Both] Mic at Int Top Conn = ATAPI, Color = Unknown DefAssociation = 0x3, Sequence = 0x0 Misc = NO_PRESENCE Pin-ctls: 0x20: IN Unsolicited: tag=00, enabled=0 Power: setting=D0, actual=D0 Node 0x17 [Audio Selector] wcaps 0x300d0d: Stereo Amp-Out R/L Control: name="Capture Volume", index=0, device=0 ControlAmp: chs=3, dir=Out, idx=0, ofs=0 Control: name="Capture Switch", index=0, device=0 ControlAmp: chs=3, dir=Out, idx=0, ofs=0 Amp-Out caps: ofs=0x10, nsteps=0x2e, stepsize=0x03, mute=1 Amp-Out vals: [0x11 0x11] Power: setting=D0, actual=D0 Connection: 6 0x1b 0x0a 0x0c 0x0f 0x11* 0x12 > > > > > > The pavucontrol "input" tab incorrectly assumes the internal microphone is > > > stereo and any input is blocked until the "link channels" icon is clicked in order to unlink the channels. > > > > > > From google I can see that several people have seen the same problem, but I don't see a solution/bug fix anywhere. > > > > > > Is there some way to add/edit/modify a configuration file to avoid having > > > to remember to unlink the microphone channels every time? > > > > > Thanks for the reply, please see: > > <a href="http://www.alsa-project.org/db/?f=de69a107ac63f0a3629cd16fe9b89d23ccef5888">http://www.alsa-project.org/db/?f=de69a107ac63f0a3629cd16fe9b89d23ccef5888</a> >