Have you tried using a conventional set of headphones plugging into the "headphone out" socket that is connected to your sound card?
My sound has also just stopped working; rebooted this morning for the first time in a few days, and now it just crackles when the system tries to play something. Could've been a change in the last 3-5 days as I've not rebooted too often this week. Am running an HP Pavilion DV3507 laptop that has not had any sound problems previously. Bugs #325547, #326864 and #328030 appear to relate. -- New! no sound from external speakers. Sound from headset only. https://bugs.launchpad.net/bugs/328869 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