https://bugs.kde.org/show_bug.cgi?id=351209
Bug ID: 351209 Summary: Brightness setting for "On Battery" works only for a very low brightness level Product: Powerdevil Version: 5.3.90 Platform: Ubuntu Packages OS: Linux Status: UNCONFIRMED Severity: normal Priority: NOR Component: general Assignee: plasma-devel@kde.org Reporter: a.prono...@gmail.com After enabling "Screen brightness" control in the "On battery" profile, the brightness when running on battery does not change automatically unless the "Level" is set to a very low value (sth around 10%). For such low value, unplugging AC will indeed affect brightness. If the level is set to any higher value, e.g. 50%, unplugging AC will not affect brightness at all. Brightness settings for "On AC Power" profile work without problems for any brightness level. This behavior can be observed using udeavadm monitor, which for the low level value shows for AC unplug event: KERNEL[2565.602739] change /devices/pci0000:00/0000:00:02.0/backlight/acpi_video0 (backlight) UDEV [2565.604719] change /devices/pci0000:00/0000:00:02.0/backlight/acpi_video0 (backlight) If higher level is set, udev only reports setting brightness when plugging IN the AC, but not when unplugging. Keyboard backlight also does not seem to work for the On Battery profile, while it does work for "On AC power". Reproducible: Always Steps to Reproduce: 1. Enable Screen brightness for "On Battery" profile and set the level to 50% 2. Unplug AC 3. Observe that the brightness did not change 4. Plug in AC 5. Set brightness level to around 5% 6. Unplug AC 7. Observe that brightness has been changed Actual Results: As in the steps, brightness is not affected for certain level settings. Expected Results: Brightness should be adjusted no matter what level is set. Running Ubuntu 15.10 with KDE 5.3.95. -- You are receiving this mail because: You are the assignee for the bug. _______________________________________________ Plasma-devel mailing list Plasma-devel@kde.org https://mail.kde.org/mailman/listinfo/plasma-devel