Use DCPD to control HP DreamColor panel
Bug #1911001 reported by
Kai-Heng Feng
This bug affects 1 person
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
HWE Next |
Fix Released
|
Undecided
|
Unassigned | ||
linux (Ubuntu) |
Fix Released
|
Undecided
|
Unassigned | ||
Focal |
Fix Released
|
Medium
|
Unassigned | ||
Groovy |
Fix Released
|
Medium
|
Unassigned | ||
linux-oem-5.10 (Ubuntu) |
Invalid
|
Undecided
|
Unassigned | ||
Focal |
Fix Released
|
Medium
|
Unassigned | ||
Groovy |
Won't Fix
|
Undecided
|
Unassigned |
Bug Description
[Impact]
Cannot change brightness on HP ZBook Fury with certain panel.
[Fix]
Add the panel to DPCD quirk table to use DPCD to control the panel
backlight.
[Test]
Changing backlight sysfs doesn't change the display brightness.
With the patch applied, changing sysfs backlight can really change the
display brightness.
[Where problems could occur]
This fix is specific to a single panel, so it's not likely to cause any
regression to other devices.
CVE References
Changed in linux (Ubuntu Focal): | |
status: | New → Confirmed |
Changed in linux (Ubuntu Groovy): | |
status: | New → Confirmed |
Changed in linux-oem-5.10 (Ubuntu): | |
status: | New → Invalid |
Changed in linux-oem-5.10 (Ubuntu Groovy): | |
status: | New → Won't Fix |
Changed in linux-oem-5.10 (Ubuntu Focal): | |
status: | New → Confirmed |
Changed in linux (Ubuntu Focal): | |
importance: | Undecided → Medium |
Changed in linux (Ubuntu Groovy): | |
importance: | Undecided → Medium |
Changed in linux-oem-5.10 (Ubuntu Focal): | |
importance: | Undecided → Medium |
tags: | added: oem-priority originate-from-1909961 stella |
Changed in linux-oem-5.10 (Ubuntu Focal): | |
status: | Confirmed → Fix Committed |
Changed in linux (Ubuntu Focal): | |
status: | Confirmed → Fix Committed |
Changed in linux (Ubuntu Groovy): | |
status: | Confirmed → Fix Committed |
tags: |
added: verification-done-groovy removed: verification-needed-groovy |
Changed in hwe-next: | |
status: | New → Fix Released |
To post a comment you must log in.
This bug is missing log files that will aid in diagnosing the problem. While running an Ubuntu kernel (not a mainline or third-party kernel) please enter the following command in a terminal window:
apport-collect 1911001
and then change the status of the bug to 'Confirmed'.
If, due to the nature of the issue you have encountered, you are unable to run this command, please add a comment stating that fact and change the bug status to 'Confirmed'.
This change has been made by an automated script, maintained by the Ubuntu Kernel Team.