** Changed in: linux-oem-5.14 (Ubuntu Focal)
Status: In Progress => Fix Committed
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https://bugs.launchpad.net/bugs/1978986
Title:
[SRU][OEM-5.14/OEM-5.17][PATCH 0/1] Fix oled brightness set above
frame-average luminance on AMD
Status in HWE Next:
In Progress
Status in linux package in Ubuntu:
Invalid
Status in linux-oem-5.14 package in Ubuntu:
In Progress
Status in linux-oem-5.17 package in Ubuntu:
In Progress
Status in linux-oem-5.14 source package in Focal:
Fix Committed
Status in linux-oem-5.17 source package in Jammy:
In Progress
Bug description:
[Impact]
The brightness is not changed obviously during 200 to 255.
[Fix]
max_cll defines the content light luminance for individual pixel.
max_fall defines frame-average level luminance.
Use max_fall value instead of max_cll as a limit for brightness control.
[Test]
Verified on AMD Cezanne, Barcelo and Rembrandt, also on LCD panel and
OLED panel. The brightness is changed more obivously on OLED panel, and
no affect on LCD panel.
[Where problems could occur]
Low risk, It may cause the max brightness can't be set.
Due to the schedule of OEM project, SRU this patch as SAUCE in OEM
kernels only.
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