Energy management issue

[tuxdj]

Now I would like to solve another small problem. Energy Saving fails to manage the keyboard backlight. Precise manual adjustment of this feature works well (using shortcuts FN + F3 & Fn + F4), while in Energy Saving, nothing happens. Instead the screen brightness is perfectly handled automatically by the energy management.
How could I solve it?
N.B.: my laptop is an Asus Zenbook UX32VD

[SteveRiley]

You will need to enlist your Google-fu to find out if anyone has discovered how to do this -- each laptop's backlit is manufacturer-specific. Start with a search like "linux asus ux32vd backlight".

[tuxdj]

You will need to enlist your Google-fu to find out if anyone has discovered how to do this -- each laptop's backlit is manufacturer-specific. Start with a search like "linux asus ux32vd backlight".

The only results that I found are inherent the manual settings of keyboard backlit. In my case it works, but it isn't managed by KDE Control Module (or Energy Saving). Otherwise I would not have asked in this forum.

[SteveRiley]

There are no mechanisms in the power management module to handle keyboard backlights. You might be able to find a reference to where the backlight's state is monitored, probably in the /sys tree. Then you could write a script to enable or disable the backlight and configure energy settings to run this script.

[tuxdj]

There are no mechanisms in the power management module to handle keyboard backlights. You might be able to find a reference to where the backlight's state is monitored, probably in the /sys tree. Then you could write a script to enable or disable the backlight and configure energy settings to run this script.

Are you sure that there aren't mechanisms in kde control module? Imho I think that kde can control this feature because this option is really present in Energy Saving, so look this screenshot:

But although this is enabled, it seems was not considered by the "Energy Saving"

[SteveRiley]

Wow -- that's not present in my power manager dialog. So apparently KDE has some sort of mechanism for detecting keyboard backlights and controlling them. On my X250, the backlight (controlled by Fn+Space) isn't even detected. On your machine, it is. But the control itself appears ineffective.

I'd recommend filing a bug at https://bugs.kde.org. This sounds more a like bug in KDE -- not working with your backlight -- than a bug in Kubuntu.

Thanks for persisting and including the screen shot.