Nicolas, For your OLED issue on ThinkPad X1 extreme (gen 2), we are following up in bug 1844798.
-- 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/1831587 Title: brightness control not work with OLED panel Status in HWE Next: New Status in OEM Priority Project: New Status in linux package in Ubuntu: Triaged Bug description: image: disco 19.04 kernel: 5.0.0-15-generic also verified failed on linux-image-unsigned-5.2.0-050200rc2-generic also refer to : - https://askubuntu.com/questions/824949/lenovo-thinkpad-x1-yoga-oled-brightness - https://bugs.freedesktop.org/show_bug.cgi?id=97883 Linux can not control the brightness on the OLED panel in the traditional way [1]. Although there's a workaround from the community [2] that to execute script while brightness hotkey event is triggered. But if we want to upstream it, it's still a problem to recognize the OLED panel so that the system knows when to go workaround. - EDID of my laptop which has OLED: https://paste.ubuntu.com/p/w7rVqJTYDy/ - EDID of the same model without OLED: https://paste.ubuntu.com/p/P3ChhX9yBJ/ there's a kernel patch related OLED for reference: - https://patchwork.kernel.org/patch/6133471/ [1] https://wiki.ubuntu.com/Kernel/Debugging/Backlight [2] https://askubuntu.com/questions/824949/lenovo-thinkpad-x1-yoga-oled-brightness To manage notifications about this bug go to: https://bugs.launchpad.net/hwe-next/+bug/1831587/+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
