did availability of analog-output-headphone change to yes when you plugged the headphone ?
pactl list sinks ports: analog-output-speaker: Haut-parleurs (priority 10000, latency offset 0 usec, available: unknown) properties: device.icon_name = "audio-speakers" analog-output-headphones: Casques analogiques (priority 9000, latency offset 0 usec, available: no) properties: device.icon_name = "audio-headphones" http://git.kernel.org/cgit/linux/kernel/git/tiwai/sound.git/plain/Documentation/sound/alsa /HD-Audio.txt study the following section and try hda-analyzer to toggle gpio Speaker and Headphone Output ~~~~~~~~~~~~~~~~~~~~~~~~~~~~ -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1181828 Title: macbook air 2,1 no sound To manage notifications about this bug go to: https://bugs.launchpad.net/alsa-driver/+bug/1181828/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs