Bug 436530

Summary:	Fn+F7 stopped working on Slimbook under Neon
Product:	[KDE Neon] neon	Reporter:	Daniel Duris <kdebugs>
Component:	Live/Install images	Assignee:	Neon Bugs <neon-bugs-null>
Status:	RESOLVED UPSTREAM
Severity:	normal	CC:	jr, nate, neon-bugs-null, sitter
Priority:	NOR
Version First Reported In:	unspecified
Target Milestone:	---
Platform:	Neon
OS:	Linux
Latest Commit:		Version Fixed/Implemented In:
Sentry Crash Report:

Description Daniel Duris 2021-05-03 11:59:14 UTC

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

Comment 1 Nate Graham 2021-05-03 19:06:16 UTC

What specific model do you have?

Comment 2 Daniel Duris 2021-05-03 19:33:49 UTC

(In reply to Nate Graham from comment #1)
> What specific model do you have?

PRO X14

Comment 3 Nate Graham 2021-05-03 21:22:04 UTC

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!