This bug is awaiting verification that the linux/5.19.0-40.41 kernel in
-proposed solves the problem. Please test the kernel and update this bug
with the results. If the problem is solved, change the tag
'verification-needed-kinetic' to 'verification-done-kinetic'. If the
problem still exists, change the tag 'verification-needed-kinetic' to
'verification-failed-kinetic'.

If verification is not done by 5 working days from today, this fix will
be dropped from the source code, and this bug will be closed.

See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how
to enable and use -proposed. Thank you!


** Tags added: kernel-spammed-kinetic-linux verification-needed-kinetic

-- 
You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux-oem-6.1 in Ubuntu.
https://bugs.launchpad.net/bugs/2009024

Title:
  Fail to output sound to external monitor which connects via docking
  station

Status in HWE Next:
  New
Status in linux package in Ubuntu:
  Fix Released
Status in linux-oem-6.1 package in Ubuntu:
  Invalid
Status in linux source package in Jammy:
  Fix Committed
Status in linux-oem-6.1 source package in Jammy:
  Fix Committed
Status in linux source package in Kinetic:
  Fix Committed
Status in linux-oem-6.1 source package in Kinetic:
  Invalid
Status in linux source package in Lunar:
  Fix Released
Status in linux-oem-6.1 source package in Lunar:
  Invalid

Bug description:
  [Impact]
  No sound output from the external monitor which connect via some docking 
station. It only happens when user boot the system with docking station 
connected. Re-plug the docking station can fix this issue. Or plug the docking 
station later won't trigger this problem.

  [Fix]
  Turn on the CONFIG_SND_HDA_INTEL_HDMI_SILENT in kernel config. It will start 
sending an "audio keepalive" to the monitor as soon as it is connected.

  [Test]
  Connect the external monitor to the Atomic Type-C Dock (HD22Q) and boot the 
system with the dock connected. Play sound via HDMI/DP port and check if 
there's any audio output from the external monitor.

  [Where problems could occur]
  It sends the "audio keepalive"(silent stream) to the monitor when connected. 
Doesn't affect original workflow of the audio system.

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