Questions tagged [xcalib]

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Legion 5 washed out colors xcalib invert mode

I have Legion 5 AMD with Linux dual gpu (Nvidia & Intergeated Radeon). I am able to switch my GPU with prime-select to on-demand but the problem is when I use Xcalib to invert screen it gives me ...
  • 101
2 votes
1 answer

`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 ...
  • 2,061
1 vote
0 answers

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 ...
5 votes
1 answer

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 ...
  • 101
0 votes
2 answers

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 ...
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0 votes
0 answers

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 ...
  • 1,831
13 votes
3 answers

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
2 votes
0 answers

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 ...
2 votes
2 answers

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 ...
4 votes
2 answers

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 ...
  • 529
3 votes
2 answers

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: How could I do ...
  • 3,611
3 votes
1 answer

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?
  • 2,133
11 votes
3 answers

`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 ...
  • 4,243
9 votes
2 answers

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 ...
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