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Inspired_Blue
Asked: 2015-09-28 09:41:39 +0800 CST

xcalib is not working on ubuntu 14.04

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I installed xcalib using:

sudo apt-get install xcalib

Then I could invert color using:

xcalib -i -a

However after I restarted my computer this is not working. Why?

I tried removing xcalib using both:

sudo apt-get remove xcalib

and

sudo apt-get purge xcalib

and re-installed xcalib.

Still xcalib isn't inverting colors. How do I fix this?

Thanks!

p.s.: My question is different from this as I don't get any error message.

display

2 Answers

  1. I solved that problem by installing the newest version of xcalib, as detailed here:

    Firstly, you need to have git, make, cmake, and some libraries:

    sudo apt install git cmake make libx11-dev libxrandr-dev libxxf86vm-dev

    Then do:

    git clone https://github.com/OpenICC/xcalib.git
cd xcalib
cmake CMakeLists.txt
sudo make install

    That works even if you do not get an error message. It works on Ubuntu 19.10 and 18.04. Also with Unity desktop manager.

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  2. I had all these same problems on ubuntu 18.4. The following worked (Easiest way to invert colors on Ubuntu 18.04):

    git clone https://github.com/zoltanp/xrandr-invert-colors.git
cd xrandr-invert-colors
 # install dependency libxcb-randr0-dev :
sudo make deps-apt
make
sudo make install

    ... and run with /usr/local/bin/xrandr-invert-colors.

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