I tried the 12.04 Live CD, and I was surprised that the problem remained. Then I tried using the Ubuntu 10.04.2 Live CD. From it audio came from both speakers.
Here's the alsa-info of the speakers working perfectly in Ubuntu 10.04.2: http://www.alsa-project.org/db/?f=c633ff994562edbb21f2d9bdefae40b8c5c68c05 and here's them not working in Ubuntu 12.10: http://www.alsa-project.org/db/?f=c964bb7dd7d08f5e86818c56533dc519c45291fd Previously, I attached the Pulse Audio Log of the speakers NOT working in 12.10. Now, this attachment is the Pulse Audio Log of them WORKING in Ubuntu 10.04.2 ** Attachment added: "pulseverbose.log" https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/1075405/+attachment/3431618/+files/pulseverbose.log -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to alsa-driver in Ubuntu. https://bugs.launchpad.net/bugs/1075405 Title: Sound Only From Right Speaker after Upgrade Status in “alsa-driver” package in Ubuntu: New Bug description: After upgrading from Ubuntu 12.04 to Ubuntu 12.10, my laptop's sound will only come from its right speaker (despite that the balance is centered). ALSA Info: http://www.alsa-project.org/db/?f=c964bb7dd7d08f5e86818c56533dc519c45291fd To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/1075405/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
