[Bug 296417] sysutils/mate-power-manager - MATE screen brightness applet does not work

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D296417

            Bug ID: 296417
           Summary: sysutils/mate-power-manager - MATE screen brightness
                    applet does not work
           Product: Ports & Packages
           Version: Latest
          Hardware: Any
                OS: Any
            Status: New
          Severity: Affects Some People
          Priority: ---
         Component: Individual Port(s)
          Assignee: [email protected]
          Reporter: [email protected]
             Flags: maintainer-feedback?([email protected])
          Assignee: [email protected]
 Attachment #272312 text/plain
         mime type:

Created attachment 272312
  --> https://bugs.freebsd.org/bugzilla/attachment.cgi?id=3D272312&action=
=3Dedit
Patch for src/gpm-backlight-helper.c to use ioctl to communicate wih the
backlight.

The MATE screen brightness applet does not work as the hardware interface in
sysutils/mate-power-manager src/gpm-backlight-helper.c is written for Linux.

The attached patch adds FreeBSD ioctl calls to communicate with the backlig=
ht
device. It has been tested on a Thinkpad T580 laptop but I have yet to test=
 on
a computer without a backlight. This is also my first patch for FreeBSD so a
close review is appreciated.


Commands such as these can be used to bypass the brightness applet and use =
the
dbus to communicate with mate-power-manager:

dbus-send --session --print-reply --dest=3D"org.mate.PowerManager"
/org/mate/PowerManager/Backlight org.mate.PowerManager.Backlight.GetBrightn=
ess

bus-send --session --print-reply --dest=3D"org.mate.PowerManager"
/org/mate/PowerManager/Backlight org.mate.PowerManager.Backlight.SetBrightn=
ess
uint32:55

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