This bug do exist - with radeon driver(s) [radeonsi in my case] - on some AMD hardware (Kaveri [Radeon R5 Graphics]) - is well known and explained: * https://bbs.archlinux.org/viewtopic.php?id=193130 * https://askubuntu.com/questions/662799/laptop-backlight-sets-to-maximum-at-startup-xubuntu-15-04
Either X apps only handle brightness through a hardcoded /sys path, then: - it should be documented - radeon driver developpers should explain why they do not use it Either X apps can handle various brightness interfaces, then: - they should explain how and where to configure it I do have a working radeon_bl0 sysfs backlight interface (the only one I have), but there seem that no software using it out there. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1450044 Title: On laptop on card AMD, screen brightness backlight isn't memorized between sessions (systemd-backlight) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/systemd/+bug/1450044/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
