Hello Hui, or anyone else affected,

Accepted linux-firmware into eoan-proposed. The package will build now
and be available at https://launchpad.net/ubuntu/+source/linux-
firmware/1.183.2 in a few hours, and then in the -proposed repository.

Please help us by testing this new package.  See
https://wiki.ubuntu.com/Testing/EnableProposed for documentation on how
to enable and use -proposed.  Your feedback will aid us getting this
update out to other Ubuntu users.

If this package fixes the bug for you, please add a comment to this bug,
mentioning the version of the package you tested and change the tag from
verification-needed-eoan to verification-done-eoan. If it does not fix
the bug for you, please add a comment stating that, and change the tag
to verification-failed-eoan. In either case, without details of your
testing we will not be able to proceed.

Further information regarding the verification process can be found at
https://wiki.ubuntu.com/QATeam/PerformingSRUVerification .  Thank you in
advance for helping!

N.B. The updated package will be released to -updates after the bug(s)
fixed by this package have been verified and the package has been in
-proposed for a minimum of 7 days.

** Changed in: linux-firmware (Ubuntu Eoan)
       Status: New => Fix Committed

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Packages, which is subscribed to linux-firmware in Ubuntu.
https://bugs.launchpad.net/bugs/1850739

Title:
  Revert the firmware update for sound/sof

Status in linux-firmware package in Ubuntu:
  Confirmed
Status in linux-firmware source package in Bionic:
  New
Status in linux-firmware source package in Disco:
  New
Status in linux-firmware source package in Eoan:
  Fix Committed

Bug description:
  SRU Justification

  Impact: An update to the sound sof firmware does not set the PV bit
  for cometlake, and thus will not load. This is a regression on
  cometlake platforms.

  Fix: Revert the update.

  Test Case: Check that the firmware will load on affected platforms.

  Regression Potential: This fixes a regression on cometlake paltforms,
  but will regress the platforms fixed by the patch being reverted.

  ---

  I submitted a firmware update for sound/sof, the tracking bug number
  is: https://bugs.launchpad.net/bugs/1847250

  Recently we found this update introduced one problem for cometlake
  platforms, cometlake need to check PV bit when loading the firmware,
  but this update doesn't set the PV bit for cometlake, as a result, on
  cometlake platforms, it always fails to load the firmware.

  So we should revert this update

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