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.
** Changed in: linux (Ubuntu)
Status: New => Incomplete
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https://bugs.launchpad.net/bugs/1911001
Title:
Use DCPD to control HP DreamColor panel
Status in HWE Next:
New
Status in linux package in Ubuntu:
Incomplete
Status in linux-oem-5.10 package in Ubuntu:
Invalid
Status in linux source package in Focal:
Confirmed
Status in linux-oem-5.10 source package in Focal:
Confirmed
Status in linux source package in Groovy:
Confirmed
Status in linux-oem-5.10 source package in Groovy:
Won't Fix
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.
To manage notifications about this bug go to:
https://bugs.launchpad.net/hwe-next/+bug/1911001/+subscriptions
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