This bug was fixed in the package linux-firmware -
20220923.gitf09bebf3-0ubuntu1.3
---------------
linux-firmware (20220923.gitf09bebf3-0ubuntu1.3) kinetic; urgency=medium
* Fix The Bluetooth connection cannot be established between two Ubuntu 22.04
systems with Realtek 8821 (LP: #1999491)
- linux-firmware: rtl_bt: Update RTL8821C BT(USB I/F) FW to 0x75b8_f098
linux-firmware (20220923.gitf09bebf3-0ubuntu1.2) kinetic; urgency=medium
* Mediatek WLAN RZ616(MT7922) SAR table control (LP: #1997200)
- linux-firmware: update firmware for MT7922 WiFi device
- linux-firmware: update firmware for mediatek bluetooth chip (MT7922)
* New DMCUB FW for AMD amdgpu DCN 3.1.6 (LP: #1998468)
- amdgpu: update DMCUB firmware for DCN 3.1.6
-- Juerg Haefliger <[email protected]> Tue, 13 Dec 2022
10:41:42 +0100
** Changed in: linux-firmware (Ubuntu Kinetic)
Status: Fix Committed => Fix Released
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https://bugs.launchpad.net/bugs/1998468
Title:
New DMCUB FW for AMD amdgpu DCN 3.1.6
Status in HWE Next:
New
Status in linux-firmware package in Ubuntu:
Fix Released
Status in linux-firmware source package in Jammy:
Fix Released
Status in linux-firmware source package in Kinetic:
Fix Released
Status in linux-firmware source package in Lunar:
Fix Released
Bug description:
[SRU Justification]
[Impact]
Multiple issues in DP alt mode, PSR-SU(Panel Self Refresh–Selective
Update), and HDMI signal integrity.
[Fix]
Upstream commit b0f995cd61cd ("amdgpu: update DMCUB firmware for DCN
3.1.6") that updates binary firmware.
[Test Case]
Can only be verified with dedicated equipment from vendor.
[Where problems could occur]
Binary firmware, everything can go wrong.
[Other Info]
Already in korg upstream, included in Lunar, too. Only Jammy and
Kinetic will be nominated for fix.
========== original bug report ==========
Some fixes for DP alt mode and PSR-SU(Panel Self Refresh–Selective
Update), and also improve HDMI signal integrity. This FW would be
tuning PHY of HDMI to enhance signal integrity in eye diagram to reach
HDMI spec(2.0/1.4b), and also avoid any risk on monitor with multiple
resolutions over HDMI output.
https://git.kernel.org/pub/scm/linux/kernel/git/firmware/linux-
firmware.git/commit/?id=b0f995cd61cd29e7eee1dc22aeeacb2eadc21227
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