Questions tagged [color-management]

Questions related to colour management of the machines display, etc.

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How can I change directory text color in C shell?

I want to change directory color in cshell. So I copied /etc/DIR_COLORS file to my ~$home and named .dir_colors. I modified that file but it doesnt change the text color. If I source that file then ...
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Scanner calibration on Ubuntu 21.10

I've followed the instructions here, but when I click Calibrate... nothing happens. Any thoughts on what I am doing wrong? Ubuntu 21.10 Canon LiDE 400 scanner
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2 votes
1 answer
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printf statement with background and foreground colours

I know that a background colour code is \033[41m, whereas a foreground colour code is \033[32m. I am interested in making a code for changing the background and foreground in a console terminal ...
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2 answers
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Colour filters other than red (maybe a cheap alternative to precision tinted lenses)

Is this possible? Is there software to have a magenta or turquoise color filter, for example? ( It's an accessibility issue, relevant to irlen syndrome: I see extra shapes around letters and certain ...
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How might single windows be made negative for the purposes of accessibility?

Previously I was able to set single windows to turn to negative colours using CompizConfig Settings Manager. One could enable an accessibility plugin called "Negative" to switch the window ...
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Set gamma correction curve (not only the exponent of a power law)

xgamma and kgamma allows one to alter the gamma correction curve by changing the exponent of a power-law expression original image: Some programs and video cards allows one to alter this curve with ...
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Color Calibration error on Ubuntu 21.10

I just updated to Ubuntu 21.10 and I am facing a problem with my monitor color calibration profiles. I generated ICC profiles for my monitor and could use them with the default "System settings --...
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Color management fail on Ubuntu 21.10

After upgrade to 21.10, color management seems disabled throughout the system. On a wide-gamut monitor, the colors look garish. It's as if the OS's color daemon doesn't load my monitor profile, even ...
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Adobe RGB Monitor behaves like sRGB under Xorg & HW Acceleration

Having a monitor that supports 100% of Adobe RGB color space. Used it for a while with Xorg and NVIDIA GPU after I found out that effective color gamut used was sRGB. I have noticed that with disabled ...
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Apple TrueTone alternative?

Are there any alternatives to Apple’s TrueTone that works without a TrueTone sensor? (e.g. the ability to adjust the warmth of the display based on the color temperature of a room measured by a camera ...
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2 votes
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58 views

Is there a way to shift the screen color hues with colors inverted?

I've managed to invert the screen with xcalib -alter -invert, but now blue is orange etc. Isn't there a way to hue-shift the screen colors as well, so only the brightness is inverted and not the hue? (...
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Colors on the screen is washed

I tried xgamma, xrandr everything, none works. This is how my screen looks now, the colors are dull. Now for vlc I can change color settings for the video, to get an output like this. Please note ...
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Screen lock disables color correction profile

I calibrated my monitor using a colorimeter and the color tab in Gnome settings. The color on the screen looks good until the screen turns off (automatically after some time). When the screen starts ...
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2k views

color scheme for Ubuntu terminal from WSL-2 install

I'm using WSL-2 under Windows 10 which has installed Ubuntu 20.04. The color scheme of the Ubuntu terminal has dark blue on a black background, which is unreadable. How do I change that?
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Can I adjust the White Balance/Color Temperature (hardware) settings of my monitor?

I know that one can do quite much programatically (shell commands) to the attached monitor hardware in Linux: turn it on/off (truly, hardware-wise) with xset dpms force off toggle the brightness (...
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6 answers
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How to turn on Night Light Blue Light filter in Ubuntu 20.04

The Night Light filter, also known as Blue Light filter or Color Temperature filter, is a bit hard to find in Ubuntu 20.04. The Night Light tab is now in shown in the title bar, next to the Displays ...
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2 answers
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Make Ubuntu's Night Light look like Manjaro KDE's Night Color

How can I make Ubuntu's Night Light look like Manjaro KDE's Night Color? I want this because Manjaro's Night Color has a lot more features that allows me to customize the settings the way I want. ...
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6 votes
1 answer
9k views

Changing ls highlight colors in Windows Terminal with WSL

I'm trying to change the highlight colors in my shell for WSL, but there's a lot going on here so I'm not sure where to look. I am using Windows Terminal and running WSL with Ubuntu. My default shell ...
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How to color manage sddm login screen?

I'm using Kubuntu with sddm login screen. Currently, the monitor icc profile loads after login. I've tried "Install System Wide" in the colord system setting, but that appears to only make the profile ...
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How do I get the values of the sRGB gamut and AdobeRGB Rating of my screen on Ubuntu?

I have started dabbling into Photo Editing and wanted to know the performance of my screen. I do not know however how to find the sRGB and AdobeRGB coverage of my laptop's screen. Is there a way to do ...
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2 votes
0 answers
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JPEGs showing shifted colors in certain applications

I am running Kubuntu 19.10 with a Nvidia GeForce GTX 1050 Ti graphics card with the v435 drivers. After editing some photos in Darktable, I have found out that sometimes certain applications show ...
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How to get rid of washed out Colors and make them brighter in Ubuntu 18.04 LTS?

My current brightness is at 1.2 and the Gamma is set at 1.0. I have tried a lot of combinations, but the Colors are either too bright or too washed out. I have also set the RGB range to full, but to ...
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2 votes
1 answer
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Scanner colour cast - ICC ignored

I have an Epson ET2750 all in one and whilst the scanner works fine with Ubuntu, it always scans with a blue colour cast. Scanner to the memory card in the printer works correctly so I know it's ...
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3 votes
0 answers
935 views

Washed out syntax highlighting colors in VSCode

I have just installed Ubuntu 19.10 (coming from Win10) and have installed my preferred code editor VSCode - but noticed immediately that the color schemes are off: they are pale/washed out and nearly ...
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  • 131
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Calibrate monitors having the same EDID

I need to calibrate two external monitors (they are not really monitors, they are 2 BlackMagic Teranex Mini HDMI to SDI 12G, but they are considered as monitors by Ubuntu) having the same EDID. Here'...
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1 answer
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Installed Ubuntu 18.04 the white color is too intense

I've tried googling this before posting this, but I installed Ubuntu on my new SSD and the white color is just way too bright and intense. When I go to Settings>Devices> there is no Color option and ...
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CompizConfig color filter not processing shader files

I can enable the color filter, toggle screen filtering with super-d, and then switch filters with ctrl-super-s, but only builtin filters work. I tried adding these filters (fragment shaders) https://...
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366 views

How Do I Change ALL the Colors of Ubuntu 18?

I tried to customize my Ubuntu 18 desktop colors by changing all of the purple and orange (hex and RGB) values in the gdm3.css to green, but I keep seeing purple when I sign out and sign back in and I ...
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3 votes
0 answers
280 views

Kubuntu Color Management: Can't change gamma, etc

I recently switched from the Ubuntu 16.04 and the Unity desktop to Kubuntu 18.04. I'm trying to calibrate the monitor on my laptop (Thinkpad W520) with an i1 Display Pro and Display Cal. When I try ...
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1 vote
0 answers
313 views

colormgr get-devices do not return all display

I have a problem about 'colormgr' I want to change color profile of all display but, I am not able to get a device from 'colormgr get-device' I use OS : Ubuntu 16.04 LTS GPU : Radeon pro ...
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1 vote
1 answer
687 views

Ubuntu 18.10 night light stuck on

I recently upgraded from Ubuntu 18.04 to 18.10. Everything works fine, except on start-up the night light feature causes the screen to start to fade immediately. I can then find no way of turning it ...
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2 votes
0 answers
329 views

Eye of Gnome - color washed out

I'm having problems with Eye of Gnome, the image viewer. I'm using Ubuntu 18.04. Unfortunately, the colors seems washed out, the images seem to lack contrast. This problem only happens with Eye of ...
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1 vote
1 answer
181 views

How to turn on Redshift, without Redshift trying to determine if it should be turned on?

I'm having trouble getting Redshift to dim my screen when i want it to. One problem is that it sometimes complains that it cannot fetch my location due to a geoclue2 error, so it doesn't turn on as a ...
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8 votes
4 answers
5k views

Weird browser colors in Ubuntu 18.04

I have been running 18.04 for about 3 months and I started to see weird colors in the browser. Note the green/yellow/blue edge on the react symbols here Can anyone point out a reason for why this is ...
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1 vote
0 answers
64 views

can't select a color profile to be applied to my laptop screen

My laptop has a Full HD display but the default hue, contrast, saturation etc. settings on it are so bad that I needed to adjust them in Windows 10 to be much more pleasant. So I used tools like ...
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3 votes
1 answer
152 views

JPGICC: What does the option described as "Precalculates transform" do?

The man page of jpgicc says -c NUM Precalculates transform (0=Off, 1=Normal, 2=Hi-res, 3=LoRes) [defaults to 1]. I was not able to find more information about that option. To me it seems 1 is a trade-...
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  • 405
7 votes
1 answer
12k views

How to calibrate screen colour in Ubuntu 18.04 LTS?

The color on the screen of my Dell XPS 15 is rather blue-ish. The D55 (5500K) profile is too yellow and D60 is too cold. Ideally I'd like a profile configured at 5700k, or somewhere in that zone. None ...
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1 vote
0 answers
77 views

Color Management 2 monitors on Ubuntu Studio 16.04 with Spyder5 express

I am using Ubuntustudio 16.04 with 2 Dell ultrasharp monitors (same model) with Spyder5 express. Xubuntu which it is base upon doesn't have colour management for one thing. Where I am really lost is ...
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1 vote
1 answer
3k views

Apply Icc color profile in xubuntu

How to apply icc color profile in xubuntu 18.04 ? I am trying to use xcalib but only thing i am getting is "Error - unsupported ramp size 0".
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4 votes
1 answer
638 views

Wrong black color on YouTube videos

I have some troubles with black color on YouTube videos. See the screenshots below: on left - screenshot from my android phone, and there are true black color on right - screenshot from my ubuntu ...
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0 votes
2 answers
3k views

spyder 3 color calibration with 17.10

With Ubuntu 17.10 (artful aardvark): when trying to calibrate my monitor with my datacolor spyder 3 calibration tool using the settings - devices - color manager, after I am told to hang the ...
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9 votes
3 answers
4k views

Uninstalling and then reinstalling nvidia-384, kills colord

I think I've encountered a bug with the nvidia drivers in Ubuntu 17.10. When I remove nvidia-384 using sudo apt remove nvidia*, colord seems to stop being able to detect my monitor. I reinstalled ...
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  • 163
1 vote
2 answers
2k views

Ubuntu 17.10 doesn't recognize color profiles

After installing 17.10 I got a warning that my custom color profile could not be loaded. I tried installing the color profile again using DisplayCAL but that didn't seem to have an effect. My custom ...
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1 vote
1 answer
297 views

Suitable color space preset for reducing eye strain in Ubuntu 16.04

I'd like to change my color profile permanently to something that reduces blue light as much as possible to reduce eye strain, but I don't know what each of the preset color profiles in the Color ...
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1 vote
1 answer
2k views

Changing the terminal font colors while running linux(ubuntu) in Windows PowerShell?

I'm running ubuntu through the Windows PowerShell. The path is in a blue color which is very difficult to read. How can the colors of the fonts, backgrounds, foregrounds be changed?
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1 vote
0 answers
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HDMI colour issue with Ubuntu - where to start?

I have two PCs using exactly the same hardware. They come with windows preinstalled by the supplier. I've removed windows and installed Ubuntu on one of the devices, and am experiencing two problems: ...
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2 votes
0 answers
223 views

Red/green inverted images - green tint

I'm running Ubuntu 16.04 LTS alongside Windows 10 and have recently discovered that in certain images red and green are inverted - red appears green and vice versa as shown here: This error doesn't ...
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0 votes
0 answers
518 views

display color issue on MSI dominator laptop display

hi all i have this weird coloring on my MSI dominator laptop as shown below : any idea of what causes this?? which is only seen in ubuntu not windows 10 Nvidia GTX1060 with 381.22 driver.
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0 votes
1 answer
748 views

Why can I not activate ICC color profiles?

The color profiles in the list (Settings>color) look the same and seem not to get activated. Even the default 'Swapped Red and Green' looks the same, as well as the test profile I created in Windows ...
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  • 101
0 votes
1 answer
702 views

Saturation slider in linux?

I can't find a saturation slider like in windows, where you go to your Intel control panel, and there's like color settings and you can just change it, but in Linux, I can't seem to find anything like ...
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