Allegedly, on or about 29 May 2016, Samuel Sieb sent:
You keep mentioning that the external monitor is bright, but that is
irrelevant. There is no way for software to adjust the brightness of
an external monitor. Power saving yes, but not the brightness.
That's not exactly true. While there isn't a way to control the
backlight with ordinary monitor connections, brightness and contrast of
the generated video signal can be controlled. Of course this gives
worse results than supplying a full signal to the monitor, and adjusting
the monitor controls. And cannot make a picture more brilliant if
you're using a (LCD) monitor that uses a backlight (that's running dim).
--
[tim@localhost ~]$ uname -rsvp
Linux 3.9.10-100.fc17.x86_64 #1 SMP Sun Jul 14 01:31:27 UTC 2013 x86_64
Boilerplate: All mail to my mailbox is automatically deleted, there is
no point trying to privately email me, I only get to see the messages
posted to the mailing list.
Using Windows software is like coating all your handtools with sewage.