I had the same problem on a Dell Studio 17/1749. I fixed it by generating this file and rebooting:
i5:/etc/modprobe.d$ cat dellstudio.conf options snd-hda-intel model=dell-m6 # or dell-m6-amic, dell-m6-dmic, dell-eq see https://help.ubuntu.com/community/HdaIntelSoundHowto sound is not very loud but for now it is good enough for me. -- No Sound from Head phone Jack from Studio XPS 1645 https://bugs.launchpad.net/bugs/553002 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs