Brightness up/down keys stopped working?

[Vinzenz Vietzke]

Am 20.06.2017 um 17:46 schrieb David Rosenstrauch:
> I'm not sure what triggered this, but it looks like some recent upgrade
> has disabled the XF86MonBrightnessUp & Down keys, and I think the issue
> might be limited to XFCE.  (When I run xev under XFCE, it never
> registers that key press.  But when I launch fluxbox in VT8 and run xev
> there it does.)
> 
> Anyone aware of any recent release that might have caused this?  (And,
> if so, how I might fix it?)
> 

Hi,

what distribution, which xfce version? Plus: what machine are you
running it on?

vinz.