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 Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1856134 Title: Support DPCD aux brightness control To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1856134/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
