Jonas Smedegaard wrote on 2/12/20 1:26 PM: > 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) "System Sounds" is the only one. It's at 100% > * Recording > + one control per recorder (irrelevant for _playing_ audio) > * Output Devices > + one control per audio device (incl. virtual ones if enabled) One slider, at 100%. > * Input Devices > + one control per audio device (irrelevant for _playing_ audio) > * Configuration > + switch to select routing mode (e.g. use HDMI instead of analog) It's set to "Analog Stereo Output"; since my speakers are plugged into the green jack at the back, it seems like that should be the correct selection. > > Make sure that you check both application level volume (for the > application you want to test - while it is running) and output device > volume. At this point I've tried with several programs that I've used (on other systems) for a long time. On all of them, even with the volume set to 100%, the sound is audible but too quiet. The same applications playing the same files on my debian 9 system produces output that is too loud for comfort. > Also, try available routing modes - they depend on your audio > device(s) so I cannot tell what is correct or optimal on your system. I don't know what "routing modes" means, nor where to control them. Doc -- Web: http://enginehousebooks.com/drevans
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