** Also affects: linux (Ubuntu Groovy)
Importance: Undecided
Status: New
** Also affects: linux (Ubuntu Focal)
Importance: Undecided
Status: New
** Also affects: linux-oem-5.6 (Ubuntu)
Importance: Undecided
Status: New
** Changed in: linux-oem-5.6 (Ubuntu Groovy)
Status: New => Invalid
** Changed in: linux (Ubuntu Focal)
Importance: Undecided => Medium
** Changed in: linux (Ubuntu Groovy)
Importance: Undecided => Medium
** Changed in: linux-oem-5.6 (Ubuntu Focal)
Importance: Undecided => Medium
** Changed in: linux (Ubuntu Focal)
Status: New => Confirmed
** Changed in: linux (Ubuntu Groovy)
Status: New => Confirmed
** Changed in: linux-oem-5.6 (Ubuntu Focal)
Status: New => Confirmed
** Tags added: oem-priority originate-from-1898670 stella
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You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux in Ubuntu.
https://bugs.launchpad.net/bugs/1898865
Title:
Enable brightness control on HP DreamColor panel
Status in HWE Next:
New
Status in linux package in Ubuntu:
Confirmed
Status in linux-oem-5.6 package in Ubuntu:
Invalid
Status in linux source package in Focal:
Confirmed
Status in linux-oem-5.6 source package in Focal:
Confirmed
Status in linux source package in Groovy:
Confirmed
Status in linux-oem-5.6 source package in Groovy:
Invalid
Bug description:
[Impact]
Brightness on HP DreamColor panel, which can be found on new HP Zbook
Studio, cannot be changed.
[Fix]
Let DRM know the panel should use DPCD instead of PWM to control
backlight.
[Test]
With the patch applied, we can change the brightness on HP Zbook Studio.
[Regression Potential]
If there's any panel in the quirk list depends on checking brightness
control capability then this change will have an impact. However it's
rather unlikely because it defeats the purpose of the quirk list.
To manage notifications about this bug go to:
https://bugs.launchpad.net/hwe-next/+bug/1898865/+subscriptions
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