APPLIED: [SRU] [F/Unstable] [PATCH 0/1] Add DCPD backlight support for HP CML system

Seth Forshee seth.forshee at canonical.com
Thu Apr 9 21:09:44 UTC 2020


On Wed, Apr 08, 2020 at 05:37:39PM +0800, Kai-Heng Feng wrote:
> BugLink: https://bugs.launchpad.net/bugs/1871589
> 
> PS. Please apply this patch on top of "Add DPCD backlight support for
> Spectre x360 Convertible 13t-aw100".
> 
> [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.

Applied to focal/master-next and unstable/master, thanks!



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