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Re: Authentication prompt when changing brightness
From: |
David Wilson |
Subject: |
Re: Authentication prompt when changing brightness |
Date: |
Mon, 07 Oct 2019 16:55:58 -0700 |
User-agent: |
Cyrus-JMAP/3.1.7-360-g7dda896-fmstable-20191004v2 |
> 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?
Yeah, it happens when I'm logged in to a custom .xsession where I'm using Emacs
as my window manager. I installed GNOME to see whether the problem exists
there and it turns out that everything works fine when logged in to a GNOME
session.
Should I be able to use "brightnessctl" without sudo if I'm in the "video"
group? Looks like I'm not able to:
---
λ brightnessctl set 200
Can't modify brightness: Permission denied
You should run this program with root privileges.
Alternatively, get write permissions for device files.
---
Thanks!
David