On Mon, 2019-10-07 at 06:25 -0700, David Wilson wrote: > Hi all, > > This is my first attempt at setting up Guix on my machine, so please > forgive me if I've missed anything obvious here. I've noticed that any > time a process tries to set the backlight brightness of my laptop, a root > authentication prompt appears: > > https://imgur.com/a/vlB7UtN > > I've seen this both when using xfce4-power-manager and inexplicably on the > GDM login screen when I didn't even press a brightness key. It definitely > seems like some policy configuration isn't set up correctly but I'm not > exactly sure how to correct it. > > I've configured my machine to use only the XFCE desktop environment but in > practice I'm actually using a custom .xsession to launch Emacs with EXWM > as my window manager. I believe I also saw it when running in XFCE but I > can't repro it now due to a separate issue with xfwm crashing when XFCE > starts up. > > Here's my current system configuration if it helps: > > https://github.com/daviwil/dotfiles/blob/23743190b8f744f89a8a43da618057663 > 8246f72/guix/systems/zerocool.scm > > I'm sure this must be a simple configuration issue so any help would be > very much appreciated! > > Thanks! > > David I have a similar problem. I see an authentication box when I try to adjust screen brightness on the gdm screen, but not when logged into gnome. Does this happen when you are logged in?
Just a guess, perhaps the "gdm" user can be added to the "video" group? I'm not sure how to do that in the system configuration though.
