This bug was fixed in the package linux-firmware - 1.183.2
---------------
linux-firmware (1.183.2) eoan; urgency=medium
* update-initramfs complains of missing amdgpu firmware files
(LP: #1850654)
- amdgpu: add new raven rlc firmware
* Add RTL8822cu bluetooth support (LP: #1849598)
- rtl_bt: Update configuration file for BT part of RTL8822CU
* Revert the firmware update for sound/sof (LP: #1850739)
- Revert "UBUNTU: SAUCE: update firmware for sound sof driver to fix hang
issues"
* Add support for Realtek 8723DE wireless adapter (LP: #1780590)
- rtw88: RTL8723D: add firmware file v48
-- Seth Forshee <seth.fors...@canonical.com> Tue, 05 Nov 2019 15:47:04
-0600
** Changed in: linux-firmware (Ubuntu Eoan)
Status: Fix Committed => Fix Released
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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:
Fix Released
Status in linux-firmware source package in Disco:
Fix Released
Status in linux-firmware source package in Eoan:
Fix Released
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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