changing screen brightness broken in Xubuntu (12.04 and 14.04)

[PK]

Try this:
https://sites.google.com/site/easylinuxtipsproject/display#TOC-Brightness-of-the-display-is-wrong-and-not-adjustable

Those tweaks work fine on my machines. :-)

Not really a Linux error, this; it has to do with BIOS / UEFI that's not
standard-compliant.

Regards, Pjotr.


2014-04-26 9:56 GMT+02:00 Liviu Andronic <landronimirc at gmail.com>:

> Dear all,
> For several releases now (12.04 and 14.04) and across several machines
> (Lenovo 32-bit and Dell 64-bit), changing brightness settings is
> broken. It doesn't work whether I use the laptop buttons to modify
> screen brightness (to get the notification changing the percentage,
> but actual brightness NOT move one bit) or the Brightness panel-plugin
> from xfce4-power-manager (nothing really happens).
>
> Is this a known issue (or should I report it to Launchpad)? But more
> importantly, how can I change screen brightness in Xubuntu (install
> gnome-power-manager, etc.)?
>
> Regards,
> Liviu
>
> --
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