GNU bug report logs - #22952
MacBook2,1 brightness control requires root privileges

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From: help-debbugs <at> gnu.org (GNU bug Tracking System)
To: "pelzflorian (Florian Pelz)" <pelzflorian <at> pelzflorian.de>
Cc: tracker <at> debbugs.gnu.org
Subject: bug#22952: closed (MacBook2,1 brightness control requires root
 privileges)
Date: Thu, 06 Jan 2022 12:32:02 +0000

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Your message dated Thu, 6 Jan 2022 13:30:52 +0100
with message-id <20220106123052.ouhb25hx55tsfd2m <at> pelzflorian.localdomain>
and subject line Re: bug#22952: MacBook2, 1 brightness control requires root privileges
has caused the debbugs.gnu.org bug report #22952,
regarding MacBook2,1 brightness control requires root privileges
to be marked as done.

(If you believe you have received this mail in error, please contact
help-debbugs <at> gnu.org.)


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22952: http://debbugs.gnu.org/cgi/bugreport.cgi?bug=22952
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From: Albin <albin <at> fripost.org>
To: bug-guix <at> gnu.org
Subject: MacBook2,1 brightness control requires root privileges
Date: Tue, 8 Mar 2016 23:50:44 +0100

Hi,

I've discovered that the non-working brightness controls for the
MacBook2,1 are due to insufficient permissions.

The first indication of this was that I could change brightness by
running the program redshift with root permissions (`sudo redshift`).

Today I was presented with this dialog box in GNOME 3 after having
pressed one of the brightness-control keys:

"Authentication is needed to run
'/gnu/store/[...]-gnome-settings-daemon-3.18.2/libexec/gsd-backlight-helper'
as the super user.

Administrator
Password [__________]"

I tried to input both the user password and the root password but none
of this this had any effect. When I back into GNOME 3 as root, however,
the brightness controls were working.

Does anyone have a suggestion what I could try to give the various
brightness control programs (for GNOME 3, Xfce, etc.) the required
permissions without having to be logged in as root?

Cheers!

Albin

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From: "pelzflorian (Florian Pelz)" <pelzflorian <at> pelzflorian.de>
To: zimoun <zimon.toutoune <at> gmail.com>
Cc: 22952-done <at> debbugs.gnu.org, Marius Bakke <marius <at> gnu.org>
Subject: Re: bug#22952: MacBook2, 1 brightness control requires root privileges
Date: Thu, 6 Jan 2022 13:30:52 +0100

On Wed, Jan 05, 2022 at 12:46:54AM +0100, zimoun wrote:
> I am doing triage of old bug and I hit this one [1].  Is it still happening?

Thank you for asking again.  All is fixed and no password gets asked
when using brightness keys on my same Macbook on GNOME/GDM nor
MATE/SDDM.  I cannot test the original poster’s Redshift even after
adding it to the geoclue-service-type applications because I lack WiFi
hardware.

Closing.

Regards,
Florian

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