Wrong sound configuration on ASUS Eee PC

With the standard installation of Ubuntu 16.04 32-Bit the single/mono internal speaker doesn't work on ASUS Eee PC with ALC269VB sound chip.

Workaround:
- sudo apt-get install alsa-tools-gui
- sudo -H hdajackretask
- Override "Internal Speaker" pin 0x14 with "Line out (Front)"
                                         or "Dock line out".
- Invoke "Install boot override".
- Reboot.
With this workaround, the Speaker entry (icon) no more appears in Audio settings, so no settings or test sound are accessible. Only the Headphone entry (icon) appears, if a headphone is plugged in.

For more details you may refer to https://forum.ubuntuusers.de/topic/kein-ton-am-internen-lautsprecher-nur-mit-kopf/