SUMMARY Fn+F7 does not work anymore (keyboard backlight function). F7 alone works OK, I can assign actions to it in Shortcuts. Fn+F7 does not work. Fn+F8 works (Mute) etc. I am also unable to assign action to Fn+F7 in Shortcuts (key does not register). I get this log in dmesg: [92247.850913] atkbd serio0: Unknown key pressed (translated set 2, code 0xf8 on isa0060/serio0). [92247.850921] atkbd serio0: Use 'setkeycodes e078 <keycode>' to make it known. [92249.590612] atkbd serio0: Unknown key released (translated set 2, code 0xf8 on isa0060/serio0). [92249.590618] atkbd serio0: Use 'setkeycodes e078 <keycode>' to make it known. STEPS TO REPRODUCE 1. Press Fn+F7 2. 3. OBSERVED RESULT Nothing happens EXPECTED RESULT Backlight changes (or any other assigned function triggers). SOFTWARE/OS VERSIONS Windows: macOS: Linux/KDE Plasma: Neon 5.21 (available in About System) KDE Plasma Version: 5.21.4 KDE Frameworks Version: 5.81.0 Qt Version: 5.15.2 Kernel 5.10.4 ADDITIONAL INFORMATION
What specific model do you have?
(In reply to Nate Graham from comment #1) > What specific model do you have? PRO X14
Seems like a kernel bug. Looks like it lost the mapping for this key, for some reason. I would recommend reporting the bug to https://bugzilla.kernel.org/ Thanks!