kernel-packages team mailing list archive

[Jerry Kao <jerry.kao@xxxxxxxxxxxxx>]

One additional information for comment#17

When verified fix patch, audio icon disappeared once after reboot system
with HDMI connected. Please refer attached screenshot and log. Can not
recover this issue by reboot/power off system.

After recover the system and check the clean system without patch, can
not reproduce this issue anymore.

Without patch
reboot for 5 times: can not reproduce
power off for times: can not reproduce

With patch
reboot for 5 times: can not reproduce
power off for times: can not reproduce

Conclusion
There is no evidence that the audio icon disappear issue is a regression of this fix patch. 

** Attachment added: "audio_icon_gone.png"
   https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1490895/+attachment/4459003/+files/audio_icon_gone.png

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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.

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