At Thu, 1 Oct 2009 14:07:03 +0300, Munzir Taha (=?utf-8?q?=D9=85=D9=86=D8=B0=D8=B1?= =?utf-8?q?_=D8=B7=D9=87?=) wrote: > > On Yaum al-Arbi'a 10 Shawwal 1430 9:36:10 am Takashi Iwai wrote: > > At Wed, 30 Sep 2009 08:18:31 +0300, > > > > > Hm, are you using pulseaudio? Just to be sure, try like below: > > % arecord -Dplughw -fdat -vv foo.wav > > Yes, pulseaudio is running according to ps -e output. I ran arecord command as > you said and no difference. OK. > > Also, does the patch below have any influence? > > I applied that patch (commented the line) but no influence. Then it's not about ADC power-off feature. > > Basically the signal path from the built-in mic is very simple, so > > there is no much room to change... > > I really don't know but it's a very bad SNR in Linux. Now, could it be that in > Vista they are implementing a Noise cancellation somehow? Possibly. But in general, the digital-mic input is often better quality than analog-mics. I asked whether this appears in the external mic, too. One thing I haven't mentioned is the IDT vendor-specific verbs for digital mic settings, such as rate, voltage, etc. These are listed in the datasheet publicly available. > Another try: could it be an IRQ issue since I noticed before the alsa update > the irq is different > - HDA Intel at 0xda100000 irq 22 > + HDA Intel at 0xda100000 irq 33 > - HDA ATI HDMI at 0xda010000 irq 17 > + HDA ATI HDMI at 0xda010000 irq 34 This is likely the influence of MSI, which is used newly as default. > Now, for some obscure reason I got confused in my previous messages when I > told you the external mic is working after the update. It seems it's always > the internal mic that's recording and when I plug the external mic, it makes > no difference. Attached is the current alsa report. Hm, that's odd. Could you check whether enable_msi=0 option changes the behavior? Takashi _______________________________________________ Alsa-devel mailing list Alsa-devel@xxxxxxxxxxxxxxxx http://mailman.alsa-project.org/mailman/listinfo/alsa-devel
