[SRU][OEM-5.6] UBUNTU: SAUCE: Fix brightness control on BOE 2270 panel
Bug #1904991 reported by
AaronMa
This bug affects 1 person
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
HWE Next |
Fix Released
|
Undecided
|
AaronMa | ||
Groovy |
New
|
Undecided
|
Unassigned | ||
linux (Ubuntu) |
Fix Released
|
Undecided
|
Unassigned | ||
Focal |
Incomplete
|
Undecided
|
Unassigned | ||
Groovy |
Fix Released
|
Medium
|
Unassigned | ||
Hirsute |
Fix Released
|
Undecided
|
Unassigned | ||
linux-oem-5.10 (Ubuntu) |
Invalid
|
Undecided
|
Unassigned | ||
Focal |
Fix Released
|
Undecided
|
Unassigned | ||
linux-oem-5.6 (Ubuntu) |
Invalid
|
Undecided
|
Unassigned | ||
Focal |
Fix Released
|
Undecided
|
Unassigned |
Bug Description
[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.
Since this is temporary quirk, it will go to oem-5.6 only.
CVE References
tags: | added: originate-from-1879616 |
summary: |
- [SRU][OEM-5.6] Fix brightness control on BOE 2270 panel + [SRU][OEM-5.6] UBUNTU: SAUCE: Fix brightness control on BOE 2270 panel |
description: | updated |
Changed in hwe-next: | |
assignee: | nobody → AaronMa (mapengyu) |
no longer affects: | linux-oem-5.6 (Ubuntu Hirsute) |
no longer affects: | linux-oem-5.6 (Ubuntu Groovy) |
Changed in linux (Ubuntu Groovy): | |
status: | New → In Progress |
Changed in linux (Ubuntu Groovy): | |
importance: | Undecided → Medium |
Changed in linux (Ubuntu Groovy): | |
status: | In Progress → Fix Committed |
Changed in linux-oem-5.10 (Ubuntu Focal): | |
status: | New → Fix Committed |
tags: |
added: verification-done-groovy removed: verification-needed-groovy |
Changed in linux-oem-5.6 (Ubuntu): | |
status: | New → Invalid |
Changed in linux-oem-5.10 (Ubuntu): | |
status: | New → Invalid |
Changed in hwe-next: | |
status: | New → Fix Released |
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@mapengyu
Is upstream maintainer still working on a fix? Do you have a pointer to upstream's bug/discussion?
What is our fix plan for 5.8?