This started happening for me when I upgraded from Trusty to Utopic. And yes, it is a bug, not a feature. Previous versions of Ubuntu always did The Right Thing without asking (admittedly, I've never tried to use a mic/headset, maybe that would have failed before).
I understand that there are technical subtleties here, but at the very least, the popup window shouldn't appear every time the device is plugged in. If there's no way to remember individual devices, there should be a checkbox or something for "assume this answer until I go into the sound settings and say otherwise." If you're worried that people will forget the checkbox and rage on the forums about their microphones not working, maybe add a small bubble on the corner next to the volume icon reminding people they can change, or a menu option in the sound icon dropdown to change settings. Whatever is done shouldn't steal focus from other applications, shouldn't block the view of the center of the screen, and shouldn't require user action under most circumstances. -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to unity-settings-daemon in Ubuntu. https://bugs.launchpad.net/bugs/1297790 Title: "Unknown audio device" dialog pops up every time I plug in headphones Status in “unity-settings-daemon” package in Ubuntu: Confirmed Bug description: I've got a combined headphone/headset socket on my Laptop. Every time I plug in my headphones, an "unknown audio device" dialog pops up asking whether I've plugged in headphones or a headset. This is isn't a great user experience as my phone can auto-detect the device. ProblemType: Bug DistroRelease: Ubuntu 14.04 Package: alsa-base 1.0.25+dfsg-0ubuntu4 ProcVersionSignature: Ubuntu 3.13.0-19.39-generic 3.13.6 Uname: Linux 3.13.0-19-generic x86_64 ApportVersion: 2.13.3-0ubuntu1 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC1: mark 1949 F.... pulseaudio /dev/snd/controlC0: mark 1949 F.... pulseaudio CurrentDesktop: Unity Date: Wed Mar 26 11:03:29 2014 InstallationDate: Installed on 2014-03-24 (2 days ago) InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Alpha amd64 (20140323) PackageArchitecture: all SourcePackage: alsa-driver Symptom: audio Symptom_AlsaPlaybackTest: ALSA playback test through plughw:PCH successful Symptom_Card: Built-in Audio - HDA Intel PCH Symptom_Jack: Green Headphone Out, Front Symptom_PulsePlaybackTest: PulseAudio playback test successful Symptom_Type: None of the above Title: [Latitude E7440, Realtek ALC292, Green Headphone Out, Front] Playback problem UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 02/18/2014 dmi.bios.vendor: Dell Inc. dmi.bios.version: A08 dmi.board.asset.tag: DE004505 dmi.board.name: 07F3F4 dmi.board.vendor: Dell Inc. dmi.board.version: A00 dmi.chassis.asset.tag: DE004505 dmi.chassis.type: 9 dmi.chassis.vendor: Dell Inc. dmi.modalias: dmi:bvnDellInc.:bvrA08:bd02/18/2014:svnDellInc.:pnLatitudeE7440:pvr01:rvnDellInc.:rn07F3F4:rvrA00:cvnDellInc.:ct9:cvr: dmi.product.name: Latitude E7440 dmi.product.version: 01 dmi.sys.vendor: Dell Inc. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/unity-settings-daemon/+bug/1297790/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp

