Comment 0 for bug 1904991
Revision history for this message
| AaronMa (mapengyu) wrote [SRU][OEM-5.6] Fix brightness control on BOE 2270 panel | #0 |
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[Impact]
BOE 2270 panel is used by several models of ThinkPads.
This brightness can not be controlled by default PWM.
[Fix]
The panel claims both PWM and AUX supports.
But actually PWM works on SDR mode, AUX works on HDR mode.
Intel i915 driver got a new SDR support to use PWM by maintainer, still in upstream review.
To fix this on certain project, use a quirk first to fix this.
The maintainer's fix can be backported in future.
[Test Case]
Backlight brightness can be changed.
[Regression Potential]
Low,
Fix for specific panel ID, no effects for others.