This bug was fixed in the package linux-oem-6.1 - 6.1.0-1028.28
---------------
linux-oem-6.1 (6.1.0-1028.28) jammy; urgency=medium
* jammy/linux-oem-6.1: 6.1.0-1028.28 -proposed tracker (LP: #2046239)
* drm/amd: Disable PSR-SU to fix the brightness issue (LP: #2046131)
- drm/amd: Disable PSR-SU on Parade 0803 TCON
* Sound: Add rtl quirk of M90-Gen5 (LP: #2046105)
- ALSA: hda/realtek: Enable headset on Lenovo M90 Gen5
* Avoid using damage rectangle under hardware rotation mode when PSR is
enabled (LP: #2045958)
- SAUCE: drm/amd/display: fix hw rotated modes when PSR-SU is enabled
* CVE-2023-6111
- netfilter: nf_tables: remove catchall element in GC sync path
-- Timo Aaltonen <timo.aalto...@canonical.com> Wed, 13 Dec 2023
14:41:09 +0200
** Changed in: linux-oem-6.1 (Ubuntu Jammy)
Status: Fix Committed => Fix Released
** CVE added: https://cve.mitre.org/cgi-bin/cvename.cgi?name=2023-6111
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https://bugs.launchpad.net/bugs/2046131
Title:
drm/amd: Disable PSR-SU to fix the brightness issue
Status in HWE Next:
In Progress
Status in linux package in Ubuntu:
New
Status in linux-oem-6.1 package in Ubuntu:
Invalid
Status in linux-oem-6.5 package in Ubuntu:
Invalid
Status in linux source package in Jammy:
Invalid
Status in linux-oem-6.1 source package in Jammy:
Fix Released
Status in linux-oem-6.5 source package in Jammy:
Fix Committed
Bug description:
[Impact]
Sometimes the brightness isn't changed on gnome menu.
[Fix]
The TCON is random hung by PSR-SU.
Add a workaround to disable PSR-SU until the real fix.
[Test]
Tested on hardware, the brightness is changed as expected.
[Where problems could occur]
It may break AMD display.
Note: This commit is replaced by commit: cd2e31a9ab93d13c4
("drm/amd/display: Set minimum requirement for using PSR-SU on
Phoenix") in v6.5, but new commit failed to fix the original issue,
disable PSR-SU again by this commit.
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