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 1871589
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/1871589
Title:
Add DCPD backlight support for HP CML system
Status in HWE Next:
New
Status in linux package in Ubuntu:
Incomplete
Bug description:
[Impact]
PWM backlight doesn't work on an upcoming HP CML system.
[Fix]
Use DPCD to control backlight instead of PWM.
[Test]
With this patch applied, changing backlight sysfs can change the brightness.
[Regression Potential]
Low. This is specific to panel ID, which is unique.
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https://bugs.launchpad.net/hwe-next/+bug/1871589/+subscriptions
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