This bug is awaiting verification that the 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-
bionic' to 'verification-done-bionic'. If the problem still exists,
change the tag 'verification-needed-bionic' to 'verification-failed-
bionic'.

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: verification-needed-bionic

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https://bugs.launchpad.net/bugs/1787058

Title:
  ThinkPad systems have no HDMI sound when using the nvidia GPU

Status in HWE Next:
  New
Status in linux package in Ubuntu:
  Fix Committed
Status in linux source package in Bionic:
  Fix Committed

Bug description:
  Some ThinkPad systems have a power-saving feature that turns off
  Nvidia HDMI audio device in Windows, but NVidia Linux driver does not
  support this feature. As a result, HDMI audio will not work on Linux.

  A BIOS workaround is added with an OEM_OSI string "Linux-Lenovo-NV-
  HDMI-Audio" which needs enabling in Linux kernel too.

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