@Hui Wang, I ran Software Updater, but there was no 0616 in PPA. I downloaded the package from the link below, and installed it manually. oem-audio-hda-daily-dkms (0.201706180301~ubuntu16.04.1) https://launchpad.net/~ubuntu-audio-dev/+archive/ubuntu/alsa-daily/+packages I can see HDMI/Display Port in [All Settings][Sound] after installing the package.
$ uname -r 4.4.0-80-generic -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1694665 Title: [DP MST] No audio output through HDMI/DP/mDP ports in Dell WD15 and TB15 docking stations Status in linux package in Ubuntu: Triaged Status in linux source package in Xenial: Fix Committed Bug description: [Impact] With Ubuntu 16.04, there is no audio (output) interface shows up in Sound settings when connecting an audio capable monitors to the HDMI, mDP and DP ports in Dell WD15 and TB15 docking stations. Fixed in 4.11-rc1 and up. [Test case] Hook up a HDMI/DP monitor, test that audio works. [Regression potential] This is a new feature. Regression testing has been conducted on non- MST setups (SKL/KBL which use i915_bpo), where HDMI/DP audio still works. i915 has been tested on BDW and HDMI audio still works. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1694665/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
