Same here on a XPS 15 9550 running ubuntu 16.10. This issue occurs randomly at boot for a while now (6 months+).
Sometimes multiple reboot are needed to get the headphone to work. I tried rebooting alsa or pulse audio and other tricks like alsamixer. But somehow, I found out that suspend/resume fix it everytime... (Side note, suspend/resume breaks my wifi so need to restart NetworkManager service, but that is another issue) I wonder what the suspend/resume process does to have this fix every time... -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1583801 Title: No sound via headphones (headset) when Ubuntu boots with them plugged in To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/1583801/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
