Ubuntu sound mixer shows 'Dummy Output' instead of the correct dev1 output pin names.Audio output on dev1 does NOT work after these attempts:.Sound output will break immediately upon the failure.All attempts at retasking audio jack pins using sudo hdajackretask.extra audio pkg installed: alsa-tools, alsa-tools-gui, gnome-alsamixer.Audio device 2 (dev2 below): Audio-gd® USB DAC NFB-2015.Intel B75 chipset, MSI B75MA-P45 (MSI-7798) board Audio device 1 (dev1 below): Realtek® ALC887 HD Audio Codec,.Don’t know anything about Linux hardware architecture. Adept at Device Manager and devcon.exe under Windows®.
