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Brightness keys12/1/2022 ![]() ![]() Click the "Dim screen to save power" toggle it to the off positionĬheck to see if your keys now have their normal native function.Click on the tool tip Screen Brightness if there is one.Click on your system menu on the top right corner of the desktop window. ![]() Try this gui method first if you are not handy with the terminal: Decrease screen brightness (set default) Increase screen brightness (set default). In KDE return to settings > configure desktop > shortcuts > Global shortcuts > power management. Issue the correct setkeycodes command in the VT. In my case the missing keys were e012 and e017. It will also give you the missing key code. You might see the message directly in the console, if not check the dmesg log for the error of a missing key. To test this on your machine, you need to drop down to a Virtual Terminal using: setkeycodes e012 224Ģ24 and 225 being the X keycodes for brightness down and up.Į012 and e017 and the Fn-F5 and Fn-F6 on this machine. On openSuse I edited the /etc/rc.d/boot.local file and added two keycodes using the following commands. The issue on my HP 840 G3 was very similar. BRIGHTNESS KEYS UPDATEI was not able to update the forum discussion there. Grub should pick the newest automatically, otherwise press esc and choose.įirst - this answer is for openSuse so apologies. If you check the bug report, you can see at least two more people on different machines have it fixed. I installed the one from last week and the brightness keys work now. This is fixed for me in the drm-intel-next kernel branch for 4.9. Read the link from Hans to get a good idea of the whole setup :)! I am going to see how far I get in fixing it, it probably needs to be filed a kernel bug. ![]() usr/share/X11//nf Section "Device"įor the ambient light button, the brightness ones do not show anything. To work around it, for me the xbacklight solution of Ghalsasi worked in combination with the snippet of for file: You can check that by doing this in a terminal: sudo evemu-record /dev/input/event3Ĭheck if events show and if they are the proper ones when you use the brightness and ambient light (fn+A for me) combinations. There can be multiple causes for the brightness not working, in my case (the Asus UX305FA) the key events are not send. You'll need to restart acpid for it to take effect: sudo service acpid restart BRIGHTNESS KEYS FULLWhen it is full up/down, you can still continue to press Fn F5/F6 to change brightness. The actual display brightness does not follow the bar in the splash. I also set value to 10 instead of 1, as it was just too slow: if then Video/brightnessup BRTUP 00000086 00000000 KĪdd the event codes to acpi event: sudo emacs /etc/acpi/events/asus-keyboard-backlight-downĮvent=video/brightnessdown BRTDN 00000087 sudo emacs /etc/acpi/events/asus-keyboard-backlight-upĬonfirm you can change backlight by (where xx is an integer): echo xx | sudo tee /sys/class/backlight/intel_backlight/brightnessĬreate a script: sudo emacs /etc/acpi/asus-keyboard-backlight.shĪdd the variable to the file: KEYS_DIR=/sys/class/backlight/intel_backlight I got this: video/brightnessdown BRTDN 00000087 00000000 K Verify acpi commands with acpi_listen: acpi_listen. Get Fn F5/F6 working: sudo emacs /etc/default/grubĬhange the following: GRUB_CMDLINE_LINUX_DEFAULT="quiet splash acpi_osi=" sudo update-grub Resources: irq:50 memory:f7400000-f77fffff memory:d0000000-dfffffff ioport:f000(size=64)ĭisclaimer: I struggled with this on Mint/Mate-18 with my Asus 305CA, and got it to work, I do not know if it works on Ubuntu as well, but try. Product: 4th Gen Core Processor Integrated Graphics ControllerĬapabilities: msi pm vga_controller bus_master cap_list rom What other workarounds/solutions are there?Ĭapabilities: pm msi pciexpress bus_master cap_list GRUB_CMDLINE_LINUX="acpi_osi=linux acpi_backlight=vendor" GRUB_CMDLINE_LINUX="acpi_backlight=vendor" After editing /etc/default/grub file I rebooted. I tried each solution from this answer and its comments. The brightness shortcuts via fn key don't work. ![]()
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