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Questions tagged [xcalib]

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xcalib: how to increase brightness back gradually?

IMO xcalib is weird. Maybe it is because I don't know how color profiles work. But same effect that I achieve by decreasing my backlight brightness I just found out I can achieve with xcalib -alter -...
Martian2020's user avatar
0 votes
0 answers
254 views

I tried all the answers I saw on the internet, but xcalib still doesn't work on my Ubuntu 22.04.2. What to do?

I am an Ubuntu 22.04.2 LTS user. I enjoy using linux distributions, but I still consider myself a novice in using terminal commands. My laptop is an ASUSTeK COMPUTER INC. Processor: Z450LA. Intel® ...
Dan Ben-Hur S. Oliveira's user avatar
2 votes
1 answer
967 views

`xcalib -i -a` won't invert colors anymore

I used to use the xcalib -i -a command on my old desktop system running 18.04 with an onboard Intel graphics card. This xcalib -i -a command successfully inverted my system colors. I just got a fancy ...
Display name's user avatar
  • 2,241
1 vote
0 answers
468 views

using xcalib -i -a to invert colors in just *one* monitor

For years, using Ubuntu 16.04 LTS, xcalib -i -a would invert the colors of just one monitor on my dual monitor Xorg setup. For that reason, I used both xcalib as well as xrandr-invert-colors, which ...
lara michaels's user avatar
5 votes
1 answer
427 views

xcalib stops working at random Ubuntu 18.04

I have just upgraded my ubuntu (Ubuntu 18.04.2 LTS, bionic). I am using xcalib -i -a to reverse the colors of my screen. Unfortunately, since the upgrade, something seems to have broken: xcalib stops ...
Synia's user avatar
  • 101
0 votes
2 answers
124 views

what is dependencies, build, installing about apt ? (intalling xrandr-invert-colors)

I want to install xrandr-invert-colors on my ubuntu 18.04 to invert display of laptop and monitor both. but have no idea what is dependencies, build and how to install it. Yeah~ I am ubuntu newbie ...
Roy's user avatar
  • 3
0 votes
0 answers
514 views

xcalib error -> unsupported ramp size -> Missing letters in menus and folder names

When issuing xcalib commands I was getting the error Error - unsupported ramp size 0. I was able to fix this by creating the following file /etc/X11/xorg.conf.d/20-intel.conf and placing this text ...
stackinator's user avatar
  • 1,951
13 votes
3 answers
10k views

xcalib error - unsupported ramp size

I'm trying to change the contrast with xcalib with the command xcalib -co 70 but I get the following error: Error - unsupported ramp size 0
tomasantunes's user avatar
2 votes
0 answers
74 views

xcalib only works upon restarting computer

I'm running Ubuntu Gnome 16.04.1 LTS on a Dell XPS 13 laptop. After installing xcalib, running "xcalib -i -a" won't invert colors initially; instead, it only works when I set my laptop to sleep then ...
Alex Kadah's user avatar
3 votes
2 answers
799 views

xcalib -inver -alter does not work with the NVIDIA driver version 364

I have been using xcalib -invert -alter to reverse the colors in my screen. The command works fine with the nouveau driver using the onboard graphics driver. However, when I switch to NVIDIA binary ...
Sertan Senturk's user avatar
5 votes
2 answers
3k views

How to reset xcalib contrast to default without seeing screen?

I installed xcalib to adjust my screen contrast, and I executed this : xcalib -co 0 -a Which set my screen contrast to 0 , and now my screen turned dark, and I don't have any clue as to how can I ...
SmootQ's user avatar
  • 539
3 votes
2 answers
1k views

How could I make my display monochrome?

Let's say I want to simulate on old monochrome gas plasma display on a current-day Ubuntu installation. That could be something like this: https://www.youtube.com/watch?v=Di9OQLiwbIU How could I do ...
d3pd's user avatar
  • 3,691
3 votes
1 answer
8k views

Can I run gcm-calibrate on Xubuntu without installing all of Gnome?

I've got the ColorHug and it's got this nice LiveCD that runs Gnome and runs through a user-friendly monitor calibration program. Can I do this from Xubuntu, without booting into the LiveCD?
unhammer's user avatar
  • 2,271
11 votes
3 answers
5k views

`xcalib -i -a` controls only one of two screens - can it control both?

I am using 2 screens, and wish to invert the colors on both of them without using compiz (I'm using gnome shell). I can use xcalib -invert -alter as suggested in this question, but it only inverts ...
drevicko's user avatar
  • 4,373
9 votes
2 answers
7k views

How to adjust contrast with xcalib

I'm trying to adjust contrast on my laptop, a ThinkPad E430, running ubuntu 12.04: xcalib -co 70 -a xrandr --output LVDS1 --brightness 0.7 Either of them works only for 1-2 seconds and after that ...
user52151's user avatar
  • 265