Why is this bug marked as invalid? I believe I am also affected by this bug. I have the same model of Dell (Precision 3510) with a Realtek ALC3235. Audio worked correctly with Ubuntu 14.04 which was pre-installed by Dell. After upgrading to 16.04 I have the issue. When I look in sound settings nothing is listed within the "Play audio through" list under the Output tab. I have been able to use alsamixer to get audio to work when this happens. It seems that the internal speaker has been muted. I recently ran "apt update" and then "apt upgrade" and now I cannot get audio to play through the internal speaker even with alsamixer. The problem seems to have gotten worse.
If I connect a headset or an external docking station, audio works fine with those devices. They appear as normal within sound settings. And I am able to configure them without any problem. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1683990 Title: [Precision 3510, Realtek ALC3235, Speaker, Internal] No sound at all. Resets to mute. No 'Play Sound Through' options To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/1683990/+subscriptions -- ubuntu-bugs mailing list firstname.lastname@example.org https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs