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-
disco' to 'verification-done-disco'. If the problem still exists, change
the tag 'verification-needed-disco' to 'verification-failed-disco'.

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-disco

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https://bugs.launchpad.net/bugs/1836308

Title:
  Unhide Nvidia HDA audio controller

Status in HWE Next:
  New
Status in linux package in Ubuntu:
  Fix Committed
Status in linux-oem package in Ubuntu:
  New
Status in linux-oem-osp1 package in Ubuntu:
  New
Status in linux source package in Bionic:
  Fix Committed
Status in linux-oem source package in Bionic:
  Fix Committed
Status in linux-oem-osp1 source package in Bionic:
  New
Status in linux source package in Disco:
  Fix Committed
Status in linux-oem source package in Disco:
  Invalid
Status in linux-oem-osp1 source package in Disco:
  Invalid

Bug description:
  [Impact]
  Nvidia HDA audio controller comes with Nvidia graphics cannot be found
  by PCI subsystem.

  [Fix]
  Write bit 25 at graphics' config space offset 0x488 to enable the HDA
  controller.

  [Test]
  Nvidia HDA controller is not listed under lspci.
  After applying the fix lspci can find Nvidia HDA controller.

  [Regression Potential]
  Low. This fix doesn't bring any functional change other then exposing
  HDA controller at hardware level.

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