I'm not sure it's regression issue or not, but it's also happen on 3.19 kernel ( 3.19.0-27 ) "with" HDMI plug, if I unplug the HDMI and test it again then the system can be shutdown without hang.
so the different between original kernel and bpo 2.2 is : bpo 2.2 encounter shutdown hang "without" HDMI plug and both encounter this issue "with" HDMI plug. -- 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/1490895 Title: Skylake/Broadwell/Haswell: No HDMI audio jack detection in D3 Status in linux package in Ubuntu: In Progress Status in linux source package in Vivid: Fix Committed Bug description: This is a long-standing bug for some Haswell, Broadwell and most Skylake machines. When the HDA audio controller is in D3, a hotplug event (i e, HDMI or DisplayPort being plugged in) fails to wake up the audio side so it never registers that something has happened. By having the i915 driver call directly into the hda driver, the HDA driver is always notified that an HDMI hotplug event has happened. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1490895/+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