On 11/28/24 2:46 PM, Dr. Nikolaus Klepp via tde-users wrote:
It's not that bad. The brightness keys are handled
by ACPI, so when you have installed acpid you can just run
$ acpi_listen
and the you get something like:
video/brightnessdown BRTDN 00000087 00000000
video/brightnessdown BRTDN 00000087 00000000
video/brightnessup BRTUP 00000086 00000000
video/brightnessup BRTUP 00000086 00000000
video/brightnessup BRTUP 00000086 00000000
... hm ... mybe you are missing acpid?
The acpi daemon is installed and running, but the proverbial plot thickens.
The T580 Fn+F5|F6 keys return:
video/brightnessup BRTUP 00000086 00000000
video/brightnessdown BRTDN 00000087 00000000
The T400 Fn+Home|End keys return:
video/brightnessup BRTUP 00000086 00000000
video/brightnessdown BRTDN 00000087 00000000
Seems the mapping is the same on both laptops. Yet the T580 keys fail
with TDE.