** Changed in: linux (Ubuntu Hirsute)
Status: In Progress => Fix Committed
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https://bugs.launchpad.net/bugs/1930527
Title:
[SRU][OEM-5.10/H] UBUNTU: SAUCE: Fix backlight control on Samsung
16727 panel
Status in HWE Next:
New
Status in linux package in Ubuntu:
Invalid
Status in linux-oem-5.10 package in Ubuntu:
Invalid
Status in linux-oem-5.10 source package in Focal:
Fix Released
Status in linux source package in Hirsute:
Fix Committed
Bug description:
SRU justification:
[Impact]
Backlight can't be controlled on 5.11- version of kernel.
[Fix]
The panel needs DPCD to get control of backlight.
After 5.12 kernel introduced new Intel HDR backlight control, and it works
well
on this panel.
Add quirk ID to enable DPCD on 5.11- kernel.
[Test]
Vendor Verified on hardware, with this quirk backlight can be changed on 5.10
and 5.11 kernel.
[Where problems could occur]
The panel backlight may not be changed.
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