Quoting D. R. Evans (2020-02-12 19:05:40) > Jonas Smedegaard wrote on 2/12/20 10:43 AM: > > Quoting D. R. Evans (2020-02-12 18:34:27) > >> I just installed buster on a new (to me) machine, and the audio > >> level is very low. With all the mixer controls and the physical > >> volume control on the speakers turned up, I can hear audio, but > >> even then it is unpleasantly quiet, certainly nothing one would > >> want to listen to. > >> > >> Any suggestions as to how to fix this, or even how to go about > >> investigating it sensibly, would be gratefully received. > > > > Maybe you missed some mixer controls? Desktop environments nowadays > > commonly use (not only ALSA but also) Pulseaudio, and a common > > mistake is to only play with the knobs tied to ALSA. > > > > One relatively userfriendly interface to Pulseaudio that I know of > > is pavucontrol, available in the Debian package of the same name. > > You can run it as a self-contained graphical tool, or if you want it > > handy accesible then additionally install pasystray. > > > > OK; I installed that, but it doesn't seem to do anything more than the > desktop mixer program. > > It says that Analog Stereo Output is 100%, as does the mixer program. > Moving that slider does make the volume even lower, so it is having an > effect, but only to make the audio even harder to hear. That sounds like you have looked at _one_ of the volume controls. When I open pavucontrol (on my Debian unstable system, but should be similar e.g. on Debian buster), there are 5 tabs: * Playback + one control per source (e.g. "System sounds", mpv, and microphone) * Recording + one control per recorder (irrelevant for _playing_ audio) * Output Devices + one control per audio device (incl. virtual ones if enabled) * Input Devices + one control per audio device (irrelevant for _playing_ audio) * Configuration + switch to select routing mode (e.g. use HDMI instead of analog) Make sure that you check both application level volume (for the application you want to test - while it is running) and output device volume. Also, try available routing modes - they depend on your audio device(s) so I cannot tell what is correct or optimal on your system. - Jonas -- * Jonas Smedegaard - idealist & Internet-arkitekt * Tlf.: +45 40843136 Website: http://dr.jones.dk/ [x] quote me freely [ ] ask before reusing [ ] keep private
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