![]() If you really want to make all those changes, go ahead, and let me know how it works.ĮDIT: Found out that even though alsamixer thinks it's still mono, you can control the volume with it. But I've also found this:, it's a guide on how to make ALSA default but it says to change so many things I'd rather just keep it the way it is now until it starts to really bother me. This works, but since Ubuntu is built to work with PulseAudio, things like the volume controller will just show mute and you can't change it. So while the idea here is not to give a step-by-step tutorial on two-track mixing, hopefully we can cover at least a few concepts that are useful for everyone. It says to open /etc/pulse/nf, then uncomment (remove the character) and edit the following line: I've found this guide: : Disable_PulseAudio_and_use_ALSA(without_removing_PulseAudio)_for_Ubuntu. Without supply voltage, you should measure an impedance above 200R from any of the five signal pins to Vcc- and Vcc+. The problem seems to be that the pi is meant to use ALSA but Ubuntu wants to use PulseAudio. When you fry an OP-AMP, very often one of the signal pins has a permanent low impedance connection to Vcc- (negative supply) or Vcc+ (positive supply) terminals. ![]() And so you know you aren’t alone.Īfter lots of searching and messing around, I think I've sort of done it. Please look at the pictures, which quite frankly arent my best, but hopefully good enough to see most of the details. I did not try to figure out what was wrong in mine, I just stopped using the flawed code.Īgain, this was Z83 not Pi, so a lot of differences, but offered FWIW. Also if present asound.state in /var/lib/alsa. You might investigate the code in the vanilla distro (look in /usr/share/alsa/ucm perhaps) against what’s in the pi distro you are using. My point is not to try 18.10, but rather that I think some code has been floating around possibly since 16.04 that in 18.04 causes mono output. I found that the plain distro code in 18.10 (maybe 18.04 have not tried that again yet) worked without modification. The code there worked, but caused mono not stereo output. In that case the manufacturer’s site had been recommending code from here, which apparently worked at one time (so maybe 16.04). I have a Z83 board (Atom) and had the same problem with a rt5651 device (though I started on 18.04, did not try 16.04).
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