Cool! I have a first version of the patch here. First make sure
https://wiki.ubuntu.com/Audio/InstallingLinuxAlsaDriverModules is *not*
installed. Then install
http://people.canonical.com/~diwic/temp/alsa-intel-hda-update-diwic-ideapad-y550-dkms_1.0.23_all.deb
and reboot. Please report back whether it fixes your problem or not. Thanks!
** Changed in: alsa-driver (Ubuntu)
Status: New => In Progress
** Changed in: alsa-driver (Ubuntu)
Assignee: (unassigned) => David Henningsson (diwic)
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[Lenovo IdeaPad Y550] Subwoofer not mute automatic when headphones attached
https://bugs.launchpad.net/bugs/611803
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