[Beta1] No speaker output on Asus Eee PC 1011PX

[Dan Bright]

Speaker output appears to be broken on the Asus Eee PC 1011PX.

Audio is working, as headphone output is fine. But there is no output whatsoever through the built-in audio analogue stereo. Sound test is silent, using both Stereo Duplex and Stereo Output device profiles.

Update:

Issue is resolved by running AlsaMixer in terminal and un-muting 'Headphones'. The default setting of mute (MM) for headphones in AlsaMixer appears to mute built-in speakers even when "Speaker", "Master" and "PCM" are unmuted and set to 100% volume.

This issue also appears to affect other Ubuntu based distributions (see threads on Ubuntu forum). I'll leave this recorded here in case you might want to consider a "fix" to ensure Headphones are unmuted after initial install of Ubuntu Mate, for the benefit of newcomers to Linux who may be less inclined to troubleshoot and/or use the CLI.