Notebook. Trying to change brightness with plasma shell applet or automaticly doesn't work. It works with cli though: echo 7 | sudo tee /sys/class/backlight/acpi_video0/brightness It did work before, unfortunately i don't remember what was the last working version.
Can you please run, ls -l /sys/class/backlight/ and post output here? Thanks
ls -l /sys/class/backlight/ total 0 lrwxrwxrwx 1 root root 0 чер 12 10:49 acpi_video0 -> ../../devices/pci0000:00/0000:00:02.0/backlight/acpi_video0 lrwxrwxrwx 1 root root 0 чер 12 10:49 intel_backlight -> ../../devices/pci0000:00/0000:00:02.0/drm/card0/card0-LVDS-1/intel_backlight
Can you please run, cat /sys/class/backlight/intel_backlight/type and cat /sys/class/backlight/acpi_video0/type
cat /sys/class/backlight/intel_backlight/type raw cat /sys/class/backlight/acpi_video0/type firmware
Just want to confirm seeing the same issue here. All backlight controls have disappeared from the "Power Management" section of System Settings. It has also been reported here: https://forum.manjaro.org/t/kde-can-not-control-screen-backlight-anymore/25654
Git commit 97f3900049aa657be5f4c124c9f992120f124944 by Bhushan Shah. Committed on 14/06/2017 at 12:55. Pushed by bshah into branch 'master'. Revert "skip the disabled backlight device" This reverts commits 86c3548d103ff5966366788220796de629be9230 and 5c0d35ca6caf7bb0a0e9897a1a868e8406f3b112. Not all raw interfaces have device/enabled under the backlight sysfs interface. Some examples are nvidia-bl and acpi_video0, they are raw interfaces but doesn't have device/enabled properties. Overall we can just return true even if file doesn't exist but then this code serves no purpose. Related: bug 381199 Ackd-by: Kai Uwe Broulik <kde@privat.broulik.de> CCMAIL: AceLan Kao <acelan@acelan.idv.tw> M +1 -19 daemon/backends/upower/backlighthelper.cpp M +0 -5 daemon/backends/upower/backlighthelper.h https://commits.kde.org/powerdevil/97f3900049aa657be5f4c124c9f992120f124944
Git commit 5c57cf64b5e5c880b1a5f3a0177293f6958e1b9a by Bhushan Shah. Committed on 14/06/2017 at 13:04. Pushed by bshah into branch 'Plasma/5.10'. Revert "skip the disabled backlight device" This reverts commits 86c3548d103ff5966366788220796de629be9230 and 5c0d35ca6caf7bb0a0e9897a1a868e8406f3b112. Not all raw interfaces have device/enabled under the backlight sysfs interface. Some examples are nvidia-bl and acpi_video0, they are raw interfaces but doesn't have device/enabled properties. Overall we can just return true even if file doesn't exist but then this code serves no purpose. Related: bug 381199 Ackd-by: Kai Uwe Broulik <kde@privat.broulik.de> CCMAIL: AceLan Kao <acelan@acelan.idv.tw> M +1 -19 daemon/backends/upower/backlighthelper.cpp M +0 -5 daemon/backends/upower/backlighthelper.h https://commits.kde.org/powerdevil/5c57cf64b5e5c880b1a5f3a0177293f6958e1b9a
Thanks.