I have been trying for a very long time to run alsamixer. Here 's the output upon writing alsamixer in the terminal in Fedora 25. I am running as root user because whenever I open alsamixer as just user, there is just one Master Control although I have my speakers plugged in like soAnd the output on running alsamixer -c 0 No protocol specifiedxcb_connection_has_error() returned trueXDG_RUNTIME_DIR (/run/user/1000) is not owned by us (uid 0), but byuid 1000! (This could e g happen if you try to connect to a non-root PulseAudio as a root user, over the native protocol. Don't do that.)ALSA lib pulse.c:243:(pulse_connect) PulseAudio: Unable to connect:   Connection refusedcannot open mixer: Connection refused
Not able to run alsamixer in Fedora 25 as Root User
fedora;audio;alsa;pulseaudio