[prev in list] [next in list] [prev in thread] [next in thread] 

List:       freedesktop-xorg-devel
Subject:    Bug in xrandr gammas
From:       crawlman () protonmail ! com
Date:       2019-01-14 14:17:43
Message-ID: 7Y-3O0wsWINhtXu15LsZHG-vkVTfiz_aeRJb7St8yRK10oE9EZaNid6R0tnUgESnWFvTy5-DicMfpx7_9qlSZnnLeOHGwJUFDQzm8Njac9o= () protonmail ! com
[Download RAW message or body]

[Attachment #2 (multipart/alternative)]

[Attachment #4 (text/plain)]

Hi!

So, I have a rare neurological condition, and it is very important to me that I can \
have control over color outputs from my monitor screen. After searching for months, I \
have come to xrandr as the only available solution for linux to change the behaviour \
of rgb channels. The problem is, it does not allow to change directly the intensity \
of different rgb channels. It only allows to change "gamma", whatever that is. When I \
set blue and green gamma all the way down, grey colors turn into red. This is what I \
wanted. But the "gamma" option does not make any difference for white. White is \
completely unaffected by xrandr. Every other color get's filtered, except by white.

I am not sure whether this is a bug in xrandr gamma handling, or if the technical \
definition of "gamma", which I cannot understand, implies that white should in fact \
be unaffected. But it would be very important, then, to have an option to directly \
control the intensities of output of each rgb channel. So, if I wanted to shut down \
green and blue output entirely, I could.

Hope someone can help with this problem!

Thanks for your patience.

Sent with [ProtonMail](https://protonmail.com) Secure Email.


[Attachment #5 (text/html)]

<div>Hi!<br><br>So, I have a rare neurological condition, and it is very important to \
me that I can have control over color outputs from my monitor screen. After searching \
for months, I have come to xrandr as the only available solution for linux to change \
the behaviour of rgb channels. The problem is, it does not allow to change directly \
the intensity of different rgb channels. It only allows to change "gamma", whatever \
that is. When I set blue and green gamma all the way down, grey colors turn into red. \
This is what I wanted. But the "gamma" option does not make any difference for white. \
White is completely unaffected by xrandr. Every other color get's filtered, except by \
white.<br><br>I am not sure whether this is a bug in xrandr gamma handling, or if the \
technical definition of "gamma", which I cannot understand, implies that white should \
in fact be unaffected. But it would be very important, then, to have an option to \
directly control the intensities of output of each rgb channel. So, if I wanted to \
shut down green and blue output entirely, I could.<br><br>Hope someone can help with \
this problem!<br><br>Thanks for your patience.<br></div><div><br></div><div \
class="protonmail_signature_block"><div class="protonmail_signature_block-user \
protonmail_signature_block-empty"><br></div><div \
class="protonmail_signature_block-proton">Sent with <a target="_blank" \
href="https://protonmail.com">ProtonMail</a> Secure \
Email.<br></div></div><div><br></div>


[Attachment #6 (text/plain)]

_______________________________________________
xorg-devel@lists.x.org: X.Org development
Archives: http://lists.x.org/archives/xorg-devel
Info: https://lists.x.org/mailman/listinfo/xorg-devel

[prev in list] [next in list] [prev in thread] [next in thread]