Rebooting with headphones unplugged worked fine for a while; then I suspended my laptop for an hour. When I came back and the laptop was reactivated (by opening the lid) sound was not working. Now I went to System Settings->Sound again, and to my surprise some new items had been added to the Output Tab ( see attached file ). It now showed three additional devices: "HDMI/DisplayPort: Built-in Audio", "HDMI/DisplayPort 2: Built-in Audio", and "HDMI/DisplayPort 3: Built-in Audio". But none of these devices worked any better than the original "Headphones: Built-in Audio". If I now uplugged the headphones, there was no sound from the speakers either. And if I tried to replug the headphones, I did not get the popup window about unknown audio device, and still no sound. (aplay -l still shows correct output). I will now try to reboot again and see what happens. I expect I will now have come back to my original problem where sound is permanently disabled, and the sound card is not recognized at all.
-- 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/1636905 Title: Sound card not recognized on Dell Vostro 5568 Status in alsa-driver package in Ubuntu: New Bug description: I just reinstalled a fresh Ubuntu 16.10 on my Dell Vostro 5568 laptop. The audio controller on the laptop is a Realtek ALC3246 with Waves MaxxAudio Pro. The external interface connector is a microphone in/stereo headphones/external speakers connector. When I select "System Settings->Sound" the output device in the dialog window shows as "Dummy Output" and when I press the "Test Sound" button no sound is heard from either front left or front right speaker ( I have ensured sound is not muted ). Note: Before reinstalling, I asked a question on askubuntu,com: http://askubuntu.com/q/841759/156688 So reinstallation of Ubuntu 16.10 did not help on my sound problem. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/1636905/+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
