Public bug reported: [Impact] A new Dell platform using DPCD aux to adjust the brightness, we need to backport some patches which are still under discussing.
[Fix] Here is the patchset we need. https://patchwork.freedesktop.org/series/69914/ [Test] Verified on new Dell platform which use DPCD aux to adjust brightness and also others which using pwm to adjust brightness, no regression found. [Regression Potential] Low, the new DPCD method only taken effect on the platforms which are listed in the quirk. ** Affects: linux (Ubuntu) Importance: Undecided Status: Incomplete ** Affects: linux-oem-osp1 (Ubuntu) Importance: Undecided Status: New ** Affects: linux (Ubuntu Bionic) Importance: Undecided Status: Incomplete ** Affects: linux-oem-osp1 (Ubuntu Bionic) Importance: Undecided Assignee: AceLan Kao (acelankao) Status: In Progress ** Also affects: linux-oem-osp1 (Ubuntu) Importance: Undecided Status: New ** No longer affects: linux-oem (Ubuntu) ** Also affects: linux-oem-osp1 (Ubuntu Bionic) Importance: Undecided Status: New ** Also affects: linux (Ubuntu) Importance: Undecided Status: New ** Changed in: linux-oem-osp1 (Ubuntu Bionic) Assignee: (unassigned) => AceLan Kao (acelankao) ** Changed in: linux-oem-osp1 (Ubuntu Bionic) Status: New => In Progress -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux-oem in Ubuntu. https://bugs.launchpad.net/bugs/1856134 Title: Support DPCD aux brightness control Status in linux package in Ubuntu: Incomplete Status in linux-oem-osp1 package in Ubuntu: New Status in linux source package in Bionic: Incomplete Status in linux-oem-osp1 source package in Bionic: In Progress Bug description: [Impact] A new Dell platform using DPCD aux to adjust the brightness, we need to backport some patches which are still under discussing. [Fix] Here is the patchset we need. https://patchwork.freedesktop.org/series/69914/ [Test] Verified on new Dell platform which use DPCD aux to adjust brightness and also others which using pwm to adjust brightness, no regression found. [Regression Potential] Low, the new DPCD method only taken effect on the platforms which are listed in the quirk. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1856134/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
