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

The name of the pictureThe name of the pictureThe name of the pictureClash Royale CLAN TAG#URR8PPP











up vote
6
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I am using Ubuntu 18.04. My graphics card is AMD Radeon R3 Graphics.



This a screenshot of my screen.



enter image description here



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?







share|improve this question


















  • 1




    Does this blue color test page look blue or purple on your laptop screen?
    – Chai T. Rex
    Aug 8 at 17:47










  • It looks purple
    – Sonevol
    Aug 8 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 at 18:15











  • Yes night mode is turned on, checking it turning off.
    – Sonevol
    Aug 8 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 at 21:34














up vote
6
down vote

favorite












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



This a screenshot of my screen.



enter image description here



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?







share|improve this question


















  • 1




    Does this blue color test page look blue or purple on your laptop screen?
    – Chai T. Rex
    Aug 8 at 17:47










  • It looks purple
    – Sonevol
    Aug 8 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 at 18:15











  • Yes night mode is turned on, checking it turning off.
    – Sonevol
    Aug 8 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 at 21:34












up vote
6
down vote

favorite









up vote
6
down vote

favorite











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



This a screenshot of my screen.



enter image description here



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?







share|improve this question














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



This a screenshot of my screen.



enter image description here



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?









share|improve this question













share|improve this question




share|improve this question








edited Aug 8 at 18:10

























asked Aug 8 at 17:41









Sonevol

209110




209110







  • 1




    Does this blue color test page look blue or purple on your laptop screen?
    – Chai T. Rex
    Aug 8 at 17:47










  • It looks purple
    – Sonevol
    Aug 8 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 at 18:15











  • Yes night mode is turned on, checking it turning off.
    – Sonevol
    Aug 8 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 at 21:34












  • 1




    Does this blue color test page look blue or purple on your laptop screen?
    – Chai T. Rex
    Aug 8 at 17:47










  • It looks purple
    – Sonevol
    Aug 8 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 at 18:15











  • Yes night mode is turned on, checking it turning off.
    – Sonevol
    Aug 8 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 at 21:34







1




1




Does this blue color test page look blue or purple on your laptop screen?
– Chai T. Rex
Aug 8 at 17:47




Does this blue color test page look blue or purple on your laptop screen?
– Chai T. Rex
Aug 8 at 17:47












It looks purple
– Sonevol
Aug 8 at 17:47




It looks purple
– Sonevol
Aug 8 at 17:47




3




3




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





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













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




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




3




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 at 21:34




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 at 21:34










1 Answer
1






active

oldest

votes

















up vote
8
down vote



accepted










Since version 3.24, Gnome has a built-in blue light filter called Night Mode. 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 colour 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.






share|improve this answer






















  • 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 at 19:10






  • 2




    @Sonevol ubuntuforums.org/showthread.php?t=892670
    – pomsky
    Aug 8 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 at 20:39










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










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











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1 Answer
1






active

oldest

votes








1 Answer
1






active

oldest

votes









active

oldest

votes






active

oldest

votes








up vote
8
down vote



accepted










Since version 3.24, Gnome has a built-in blue light filter called Night Mode. 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 colour 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.






share|improve this answer






















  • 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 at 19:10






  • 2




    @Sonevol ubuntuforums.org/showthread.php?t=892670
    – pomsky
    Aug 8 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 at 20:39










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










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















up vote
8
down vote



accepted










Since version 3.24, Gnome has a built-in blue light filter called Night Mode. 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 colour 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.






share|improve this answer






















  • 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 at 19:10






  • 2




    @Sonevol ubuntuforums.org/showthread.php?t=892670
    – pomsky
    Aug 8 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 at 20:39










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










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













up vote
8
down vote



accepted







up vote
8
down vote



accepted






Since version 3.24, Gnome has a built-in blue light filter called Night Mode. 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 colour 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.






share|improve this answer














Since version 3.24, Gnome has a built-in blue light filter called Night Mode. 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 colour 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.







share|improve this answer














share|improve this answer



share|improve this answer








edited Aug 8 at 22:20

























answered Aug 8 at 19:04









HattinGokbori87

46912




46912











  • 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 at 19:10






  • 2




    @Sonevol ubuntuforums.org/showthread.php?t=892670
    – pomsky
    Aug 8 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 at 20:39










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










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

















  • 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 at 19:10






  • 2




    @Sonevol ubuntuforums.org/showthread.php?t=892670
    – pomsky
    Aug 8 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 at 20:39










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










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
















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 at 19:10




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 at 19:10




2




2




@Sonevol ubuntuforums.org/showthread.php?t=892670
– pomsky
Aug 8 at 19:25




@Sonevol ubuntuforums.org/showthread.php?t=892670
– pomsky
Aug 8 at 19:25




3




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 at 20:39




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 at 20:39












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




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












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





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













 

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