2015-02-16 10:57 GMT+01:00 Pavel Machek <pavel@xxxxxx>: > Ahoj! > >> > By default, output goes to loudspeaker (top right relative to >> > keyboard). Any ideas how to switch it to the speaker on the left or >> > wired headset? Because I suspect that echo cancelation is not going to >> > be simple... >> > Pavel >> > -- >> > (english) http://www.livejournal.com/~pavelmachek >> > (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html >> >> Hi, >> in case of direct alsa output (not PA), setup is pretty complex. >> Headphones referenced as line. All audio outputs are differential. >> Here are controls that affects volumes... > > Aha, thanks for nice explanation. Now it starts to make sense... I got > headset connected to 3.5" jack to work. > > Now, I guess I'd like the internal speaker on the left to work, > too... Aha, so n900 has two stereo "loud" speakers on the keyboard > part, plus extra speaker on the left display part for communication? > Yes, exactly. > I got the two stereo ones to work now. > > Any idea what is the last speaker on display is called? HPCOM? Mono? In schematics, earphone is connected to Left HP, channel B (loudspeakers are channel A). But even after enabling all its controls, earphone stays muted. My N900 may have broken flex causing my touchscreen problems too. Better try it yourself. >> global: >> PCM (volume) >> left/right DAC mux (below) >> -- DAC_L1/R1 passes sound to loudspeakers, line, (maybe others) >> -- DAC_L2/R2 passes sound to loudspeakers, NOT line, (maybe others) >> -- DAC_L3/R3 passes sound to NOT loudspeakers, line, (maybe others) >> if DAC_L1/R1 is chosen, you can hear lower volume on both >> outputs in compare to dedicated outputs (DAC_L2/R2, DAC_L3/R3), >> probabbly due to higher load of ADC >> >> >> loudspeakers: >> Speaker function (on) >> HP (unmute) >> HP DAC (volume) >> left HP Mixer DACL1 (below) >> right HP Mixer DACR1 (below) >> --unmute theese two, this will pass left channel sound to left >> channel output and vice versa >> left HP Mixer DACR1 (below) >> right HP Mixer DACL1 (below) >> --mute these two, this controls channel crosstalk ( amount of left >> channel sound going to right channel output and vice versa) >> >> line: >> line (unmute) >> line DAC (volume) >> jack function (headphone) >> TPA6130A2 Headphone (volume) >> left Line Mixer DACL1 (below) >> right Line Mixer DACR1 (below) >> --unmute theese two, this will pass left channel sound to left >> channel output and vice versa >> left Line Mixer DACR1 (below) >> right Line Mixer DACL1 (below) >> --mute these two, this controls channel crosstalk ( amount of left >> channel sound going to right channel output and vice versa) > > Thanks a lot! > Pavel > -- > (english) http://www.livejournal.com/~pavelmachek > (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
