[SRU][OEM-5.10/H] UBUNTU: SAUCE: Fix backlight control on Samsung 16727 panel
Bug #1930527 reported by
AaronMa
This bug affects 1 person
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
linux (Ubuntu) |
Invalid
|
Undecided
|
Unassigned | ||
Hirsute |
Fix Released
|
Undecided
|
Unassigned | ||
linux-oem-5.10 (Ubuntu) |
Invalid
|
Undecided
|
Unassigned | ||
Focal |
Fix Released
|
Undecided
|
Unassigned |
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.
CVE References
no longer affects: | linux (Ubuntu Focal) |
no longer affects: | linux-oem-5.10 (Ubuntu Hirsute) |
Changed in hwe-next: | |
assignee: | nobody → AaronMa (mapengyu) |
summary: |
- [SRU][OEM-5.10/H] Fix backlight control on Samsung 16727 panel + [SRU][OEM-5.10/H] UBUNTU: SAUCE: Fix backlight control on Samsung 16727 + panel |
Changed in linux-oem-5.10 (Ubuntu Focal): | |
status: | New → Fix Committed |
Changed in linux-oem-5.10 (Ubuntu): | |
status: | New → Invalid |
Changed in linux (Ubuntu): | |
status: | New → Invalid |
Changed in linux (Ubuntu Hirsute): | |
status: | New → In Progress |
Changed in linux (Ubuntu Hirsute): | |
status: | In Progress → Fix Committed |
tags: |
added: verification-done-hirsute removed: verification-needed-hirsute |
no longer affects: | hwe-next |
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This bug is awaiting verification that the kernel in -proposed solves the problem. Please test the kernel and update this bug with the results. If the problem is solved, change the tag 'verification- needed- focal' to 'verification- done-focal' . If the problem still exists, change the tag 'verification- needed- focal' to 'verification- failed- focal'.
If verification is not done by 5 working days from today, this fix will be dropped from the source code, and this bug will be closed.
See https:/ /wiki.ubuntu. com/Testing/ EnableProposed for documentation how to enable and use -proposed. Thank you!