I also have this issue. Running "alsactl restore" will allow sound to come through the headphones without rebooting, but this is suboptimal. I have attached my alsa-info output.
** Attachment added: "alsa-info.txt.vU4MuqgaEu" https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/1670059/+attachment/4883677/+files/alsa-info.txt.vU4MuqgaEu -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to alsa-driver in Ubuntu. https://bugs.launchpad.net/bugs/1670059 Title: [Latitude 3340, Realtek ALC3234] Headphones Not Detected if Plugged in before Boot Status in alsa-driver package in Ubuntu: New Bug description: When (re)booting with headphones in, audio won't play. Once the headphones are unplugged, it will start to come through the speakers and will work with the headphones when they are plugged back in. Expected headphones to be detected automatically even if plugged in before boot. This is on latest Xenial HWE kernel (4.8.0-39-generic x86_64). ALSA Info attached. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/1670059/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp
