Probably this is a dupe from bug #410769 or bug #412807
Can you test the workaround described there?
also please execute from a terminal
apport-collect -p alsa-base 383756
** Summary changed:
- Internal speakers are not disabled if speakers are plugged into docking
station (Dell Latitude E6400)
+ Internal speakers are not disabled if speakers are plugged into docking
station (Dell Latitude E6400) 8086:293e Codec IDT 92HD71B7X
** Changed in: linux (Ubuntu)
Status: New => Incomplete
** Changed in: linux (Ubuntu)
Importance: Undecided => Medium
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Internal speakers are not disabled if speakers are plugged into docking station
(Dell Latitude E6400) 8086:293e Codec IDT 92HD71B7X
https://bugs.launchpad.net/bugs/383756
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