Ubuntu 18.04 text is blurry when I turn up the refresh rate












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I'm using an Nvidia GTX 670 with the nvidia proprietary driver 690.



At 30hz All of the fonts look great, in fact everything looks great. However when I turn the refresh rate up to 60hz many of the fonts become blurry and blotchy. I tried using gnome-tweak-tool to adjust the anti-aliasing but no matter what I do the fonts are blurry.



Just a quick note, Im using a 43" Vizio 4K tv and I have the resolution set at 4096x2160. Also, using the same tv as a monitor for my 2105 macbook retina with the same resolution/refresh rate everything looks fine, so I doubt it's the tv.










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    0














    I'm using an Nvidia GTX 670 with the nvidia proprietary driver 690.



    At 30hz All of the fonts look great, in fact everything looks great. However when I turn the refresh rate up to 60hz many of the fonts become blurry and blotchy. I tried using gnome-tweak-tool to adjust the anti-aliasing but no matter what I do the fonts are blurry.



    Just a quick note, Im using a 43" Vizio 4K tv and I have the resolution set at 4096x2160. Also, using the same tv as a monitor for my 2105 macbook retina with the same resolution/refresh rate everything looks fine, so I doubt it's the tv.










    share|improve this question

























      0












      0








      0







      I'm using an Nvidia GTX 670 with the nvidia proprietary driver 690.



      At 30hz All of the fonts look great, in fact everything looks great. However when I turn the refresh rate up to 60hz many of the fonts become blurry and blotchy. I tried using gnome-tweak-tool to adjust the anti-aliasing but no matter what I do the fonts are blurry.



      Just a quick note, Im using a 43" Vizio 4K tv and I have the resolution set at 4096x2160. Also, using the same tv as a monitor for my 2105 macbook retina with the same resolution/refresh rate everything looks fine, so I doubt it's the tv.










      share|improve this question













      I'm using an Nvidia GTX 670 with the nvidia proprietary driver 690.



      At 30hz All of the fonts look great, in fact everything looks great. However when I turn the refresh rate up to 60hz many of the fonts become blurry and blotchy. I tried using gnome-tweak-tool to adjust the anti-aliasing but no matter what I do the fonts are blurry.



      Just a quick note, Im using a 43" Vizio 4K tv and I have the resolution set at 4096x2160. Also, using the same tv as a monitor for my 2105 macbook retina with the same resolution/refresh rate everything looks fine, so I doubt it's the tv.







      nvidia display fonts display-resolution






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      asked Dec 19 '18 at 20:43









      user1789778user1789778

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          GTX 670 surely does not support HDMI 2.0, so it cannot do 4k 60Hz 8-bit RGB.



          It is possible that the driver tries to do YUV compression to allow 4k 60Hz over HDMI 1.4, which cause the blurry.






          share|improve this answer





















          • thats a great point! I totally spaced it that for the mac I used a thunderbolt to active HDMI converter which was the only way to make it work.
            – user1789778
            Dec 20 '18 at 15:55











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          1 Answer
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          1 Answer
          1






          active

          oldest

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          active

          oldest

          votes






          active

          oldest

          votes









          1














          GTX 670 surely does not support HDMI 2.0, so it cannot do 4k 60Hz 8-bit RGB.



          It is possible that the driver tries to do YUV compression to allow 4k 60Hz over HDMI 1.4, which cause the blurry.






          share|improve this answer





















          • thats a great point! I totally spaced it that for the mac I used a thunderbolt to active HDMI converter which was the only way to make it work.
            – user1789778
            Dec 20 '18 at 15:55
















          1














          GTX 670 surely does not support HDMI 2.0, so it cannot do 4k 60Hz 8-bit RGB.



          It is possible that the driver tries to do YUV compression to allow 4k 60Hz over HDMI 1.4, which cause the blurry.






          share|improve this answer





















          • thats a great point! I totally spaced it that for the mac I used a thunderbolt to active HDMI converter which was the only way to make it work.
            – user1789778
            Dec 20 '18 at 15:55














          1












          1








          1






          GTX 670 surely does not support HDMI 2.0, so it cannot do 4k 60Hz 8-bit RGB.



          It is possible that the driver tries to do YUV compression to allow 4k 60Hz over HDMI 1.4, which cause the blurry.






          share|improve this answer












          GTX 670 surely does not support HDMI 2.0, so it cannot do 4k 60Hz 8-bit RGB.



          It is possible that the driver tries to do YUV compression to allow 4k 60Hz over HDMI 1.4, which cause the blurry.







          share|improve this answer












          share|improve this answer



          share|improve this answer










          answered Dec 20 '18 at 12:52









          Alvin LiangAlvin Liang

          6618




          6618












          • thats a great point! I totally spaced it that for the mac I used a thunderbolt to active HDMI converter which was the only way to make it work.
            – user1789778
            Dec 20 '18 at 15:55


















          • thats a great point! I totally spaced it that for the mac I used a thunderbolt to active HDMI converter which was the only way to make it work.
            – user1789778
            Dec 20 '18 at 15:55
















          thats a great point! I totally spaced it that for the mac I used a thunderbolt to active HDMI converter which was the only way to make it work.
          – user1789778
          Dec 20 '18 at 15:55




          thats a great point! I totally spaced it that for the mac I used a thunderbolt to active HDMI converter which was the only way to make it work.
          – user1789778
          Dec 20 '18 at 15:55


















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