"David Wilson" <da...@daviwil.com> writes: > On Mon, Oct 7, 2019, at 5:18 PM, Vagrant Cascadian wrote: >> >> You have to configure the udev rule in your system configuration; using >> the rules shipped with the brightnessctl package works: >> >> (udev-configuration (inherit config) >> (rules (cons brightnessctl >> >> (udev-configuration-rules config))))) >> > > Thank you Vagrant, that led me down the correct path! I was able to > use your suggestion plus a udev config snippet I found in Pierre > Neidhardt's Guix config to get backlight controls to work: > > https://gitlab.com/ambrevar/dotfiles/blob/master/.config/guix/system/default.scm#L22-30 > > Regarding xfce4-power-manager's inability to control the backlight, I > believe that its polkit policy file has not been picked up by the > polkit-service such that it doesn't end up in /etc/polkit-1/actions > where it belongs. I'm looking into submitting a patch to correct this > behavior so that future Guixers aren't confounded by that issue as I > was. > > Thanks! > > David
Thanks for looking into it, David! Maxim
