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My laptop screen has a purple tint. How to fix it?

GNOME Night Light Setting from the Command LineInconsistent Purple Screen After BootUbuntu 12.10 boots to purple screen after upgrading from 12.04?Nvidia GEForce GT 610 installed via additional drivers changed the default color to blue16.04 freezes shortly on purple screenUbuntu 16.04 with AMD Radeon HD-6450 - what are my options?Second monitor and graphics card (AMD) not detected in Ubuntu 12.04 (32-bit)colors are washed outBlack wallpaper is not black (possible driver issue)Ubuntu 18.04 does not detect Intel On board graphicsI need Amd radeon r5 m430 graphics card drivers for Ubuntu 18.04LTS

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6

I am using Ubuntu 18.04. My graphics card is AMD Radeon R3 Graphics.

This a screenshot of my screen.

Clearly the blue circle appears purple. Why is it happening and how to solve it?

My system is thoroughly updated and upgraded.

Or is it that I am actually color blind?

graphics 18.04 amd-graphics colors

share|improve this question

edited Aug 8 '18 at 18:10

Sonevol

asked Aug 8 '18 at 17:41

SonevolSonevol

275218

• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  Does this blue color test page look blue or purple on your laptop screen?
  
  – Chai T. Rex
  Aug 8 '18 at 17:47
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  It looks purple
  
  – Sonevol
  Aug 8 '18 at 17:47
  

  
  
  
  


• 
  
  
  

  
  3
  

  
  
  
  
  
  

  
  
  Is the Night Light mode turned on in Settings > Devices > Display? If so, does turning it off fix it?
  
  – HattinGokbori87
  Aug 8 '18 at 18:15
  
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Yes night mode is turned on, checking it turning off.
  
  – Sonevol
  Aug 8 '18 at 18:22
  

  
  
  
  


• 
  
  
  

  
  3
  

  
  
  
  
  
  

  
  
  Wait... you posted a screen shot to show us the color of your screen? This is the one time you are allowed to use a camera to take a picture of your screen, screenshots are going to be rendered by our computers as completely normal.
  
  – Sam
  Aug 8 '18 at 21:34
  

  
  
  
  

 | 
show 2 more comments

6

I am using Ubuntu 18.04. My graphics card is AMD Radeon R3 Graphics.

This a screenshot of my screen.

Clearly the blue circle appears purple. Why is it happening and how to solve it?

My system is thoroughly updated and upgraded.

Or is it that I am actually color blind?

graphics 18.04 amd-graphics colors

share|improve this question

edited Aug 8 '18 at 18:10

Sonevol

asked Aug 8 '18 at 17:41

SonevolSonevol

275218

• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  Does this blue color test page look blue or purple on your laptop screen?
  
  – Chai T. Rex
  Aug 8 '18 at 17:47
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  It looks purple
  
  – Sonevol
  Aug 8 '18 at 17:47
  

  
  
  
  


• 
  
  
  

  
  3
  

  
  
  
  
  
  

  
  
  Is the Night Light mode turned on in Settings > Devices > Display? If so, does turning it off fix it?
  
  – HattinGokbori87
  Aug 8 '18 at 18:15
  
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Yes night mode is turned on, checking it turning off.
  
  – Sonevol
  Aug 8 '18 at 18:22
  

  
  
  
  


• 
  
  
  

  
  3
  

  
  
  
  
  
  

  
  
  Wait... you posted a screen shot to show us the color of your screen? This is the one time you are allowed to use a camera to take a picture of your screen, screenshots are going to be rendered by our computers as completely normal.
  
  – Sam
  Aug 8 '18 at 21:34
  

  
  
  
  

 | 
show 2 more comments

I am using Ubuntu 18.04. My graphics card is AMD Radeon R3 Graphics.

This a screenshot of my screen.

Clearly the blue circle appears purple. Why is it happening and how to solve it?

My system is thoroughly updated and upgraded.

Or is it that I am actually color blind?

graphics 18.04 amd-graphics colors

share|improve this question

edited Aug 8 '18 at 18:10

Sonevol

asked Aug 8 '18 at 17:41

SonevolSonevol

275218

share|improve this question

edited Aug 8 '18 at 18:10

Sonevol

asked Aug 8 '18 at 17:41

SonevolSonevol

275218

share|improve this question

edited Aug 8 '18 at 18:10

Sonevol

asked Aug 8 '18 at 17:41

SonevolSonevol

275218

asked Aug 8 '18 at 17:41

SonevolSonevol

275218

asked Aug 8 '18 at 17:41

SonevolSonevol

275218

1 Answer
1

active

oldest

votes

9

Since version 3.24, Gnome has a built-in blue light filter called Night Mode (AKA Night Light). It is now almost a proven fact that exposure to blue light in night-time disrupts our sleep pattern. Night Mode is there for that reason: to limit your exposure to both bright and blue light from the screen. It works by applying a red hue upon screen. So when it is turned on, blue color may look purple (this is the case here, see comments on the question).

Go to Settings > Devices > Display. There you can customize Night Mode by setting activation time or controlling red-level. Or you can disable the feature altogether.

You can also change it through commmand line.

share|improve this answer

edited 5 mins ago

Pablo Bianchi

3,10521636

answered Aug 8 '18 at 19:04

HattinGokbori87HattinGokbori87

770215

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Although not related I am always curious about it? How to pronounce "Gnome"? Is it like "Go" for "Godzilla" and "no" for "necklace" pronounced one after another quickly? Like "Gonome"?
  
  – Sonevol
  Aug 8 '18 at 19:10
  

  
  
  
  


• 
  
  
  

  
  2
  

  
  
  
  
  
  

  
  
  @Sonevol ubuntuforums.org/showthread.php?t=892670
  
  – pomsky
  Aug 8 '18 at 19:25
  

  
  
  
  


• 
  
  
  

  
  3
  

  
  
  
  
  
  

  
  
  It's worth noting (preferably in the answer) that Night Mode is there for a reason: to limit your exposure to both bright and blue light from the screen, both of which are thought to cause sleeping problems. Sure, disabling it is an option, but people should be made aware of the potential downsides of disabling it.
  
  – marcelm
  Aug 8 '18 at 20:39
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  And it rests your eyes. Without wearing properly coated glasses it damages your eyes.
  
  – Sonevol
  Aug 8 '18 at 22:16
  

  
  
  
  


• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  @Sonevol “…it damages your eyes” [ Citation needed ]
  
  – Melebius
  Aug 14 '18 at 8:25
  
  

  
  
  
  

add a comment | 

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9

Since version 3.24, Gnome has a built-in blue light filter called Night Mode (AKA Night Light). It is now almost a proven fact that exposure to blue light in night-time disrupts our sleep pattern. Night Mode is there for that reason: to limit your exposure to both bright and blue light from the screen. It works by applying a red hue upon screen. So when it is turned on, blue color may look purple (this is the case here, see comments on the question).

Go to Settings > Devices > Display. There you can customize Night Mode by setting activation time or controlling red-level. Or you can disable the feature altogether.

You can also change it through commmand line.

share|improve this answer

edited 5 mins ago

Pablo Bianchi

3,10521636

answered Aug 8 '18 at 19:04

HattinGokbori87HattinGokbori87

770215

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Although not related I am always curious about it? How to pronounce "Gnome"? Is it like "Go" for "Godzilla" and "no" for "necklace" pronounced one after another quickly? Like "Gonome"?
  
  – Sonevol
  Aug 8 '18 at 19:10
  

  
  
  
  


• 
  
  
  

  
  2
  

  
  
  
  
  
  

  
  
  @Sonevol ubuntuforums.org/showthread.php?t=892670
  
  – pomsky
  Aug 8 '18 at 19:25
  

  
  
  
  


• 
  
  
  

  
  3
  

  
  
  
  
  
  

  
  
  It's worth noting (preferably in the answer) that Night Mode is there for a reason: to limit your exposure to both bright and blue light from the screen, both of which are thought to cause sleeping problems. Sure, disabling it is an option, but people should be made aware of the potential downsides of disabling it.
  
  – marcelm
  Aug 8 '18 at 20:39
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  And it rests your eyes. Without wearing properly coated glasses it damages your eyes.
  
  – Sonevol
  Aug 8 '18 at 22:16
  

  
  
  
  


• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  @Sonevol “…it damages your eyes” [ Citation needed ]
  
  – Melebius
  Aug 14 '18 at 8:25
  
  

  
  
  
  

add a comment | 

9

Since version 3.24, Gnome has a built-in blue light filter called Night Mode (AKA Night Light). It is now almost a proven fact that exposure to blue light in night-time disrupts our sleep pattern. Night Mode is there for that reason: to limit your exposure to both bright and blue light from the screen. It works by applying a red hue upon screen. So when it is turned on, blue color may look purple (this is the case here, see comments on the question).

Go to Settings > Devices > Display. There you can customize Night Mode by setting activation time or controlling red-level. Or you can disable the feature altogether.

You can also change it through commmand line.

share|improve this answer

edited 5 mins ago

Pablo Bianchi

3,10521636

answered Aug 8 '18 at 19:04

HattinGokbori87HattinGokbori87

770215

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Although not related I am always curious about it? How to pronounce "Gnome"? Is it like "Go" for "Godzilla" and "no" for "necklace" pronounced one after another quickly? Like "Gonome"?
  
  – Sonevol
  Aug 8 '18 at 19:10
  

  
  
  
  


• 
  
  
  

  
  2
  

  
  
  
  
  
  

  
  
  @Sonevol ubuntuforums.org/showthread.php?t=892670
  
  – pomsky
  Aug 8 '18 at 19:25
  

  
  
  
  


• 
  
  
  

  
  3
  

  
  
  
  
  
  

  
  
  It's worth noting (preferably in the answer) that Night Mode is there for a reason: to limit your exposure to both bright and blue light from the screen, both of which are thought to cause sleeping problems. Sure, disabling it is an option, but people should be made aware of the potential downsides of disabling it.
  
  – marcelm
  Aug 8 '18 at 20:39
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  And it rests your eyes. Without wearing properly coated glasses it damages your eyes.
  
  – Sonevol
  Aug 8 '18 at 22:16
  

  
  
  
  


• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  @Sonevol “…it damages your eyes” [ Citation needed ]
  
  – Melebius
  Aug 14 '18 at 8:25
  
  

  
  
  
  

add a comment | 

Since version 3.24, Gnome has a built-in blue light filter called Night Mode (AKA Night Light). It is now almost a proven fact that exposure to blue light in night-time disrupts our sleep pattern. Night Mode is there for that reason: to limit your exposure to both bright and blue light from the screen. It works by applying a red hue upon screen. So when it is turned on, blue color may look purple (this is the case here, see comments on the question).

Go to Settings > Devices > Display. There you can customize Night Mode by setting activation time or controlling red-level. Or you can disable the feature altogether.

You can also change it through commmand line.

share|improve this answer

edited 5 mins ago

Pablo Bianchi

3,10521636

answered Aug 8 '18 at 19:04

HattinGokbori87HattinGokbori87

770215

share|improve this answer

edited 5 mins ago

Pablo Bianchi

3,10521636

answered Aug 8 '18 at 19:04

HattinGokbori87HattinGokbori87

770215

edited 5 mins ago

Pablo Bianchi

3,10521636

edited 5 mins ago

Pablo Bianchi

3,10521636

answered Aug 8 '18 at 19:04

HattinGokbori87HattinGokbori87

770215

answered Aug 8 '18 at 19:04

HattinGokbori87HattinGokbori87

770215