Ubuntu 18.04 not detecting monitor size properly












1














I just fresh installed Ubuntu 18.04, after some hassle I was able to install the nvidia-driver-396. I run a dual monitor setup being one a 29" ultra wide and one 24" 1080p, when I had Ubuntu 16.04 the system detected the monitors sizes without a problem, but for some reason on Ubuntu 18.04 the 29" is being detected as 34" and the 24" is being detected as 7", odd thing is that their resolutions are correct it is just the monitor size that is wrong.



VLC for some reason had huge icons on the "detected 7" monitor", I solved that by adding QT_AUTO_SCREEN_SCALE_FACTOR=0 in /etc/environment and /etc/profile.d/gnome-qt.sh



Although that solved the VLC issue the monitors sizes are still being wrongly detected, how can I solve it?



Here are some Screen Shots



This is the 29" monitor:



This is the 29" monitor



This is the 24" monitor:



This is the 24" monitor



Info on the nvidia driver:



Info on the nvidia driver










share|improve this question





























    1














    I just fresh installed Ubuntu 18.04, after some hassle I was able to install the nvidia-driver-396. I run a dual monitor setup being one a 29" ultra wide and one 24" 1080p, when I had Ubuntu 16.04 the system detected the monitors sizes without a problem, but for some reason on Ubuntu 18.04 the 29" is being detected as 34" and the 24" is being detected as 7", odd thing is that their resolutions are correct it is just the monitor size that is wrong.



    VLC for some reason had huge icons on the "detected 7" monitor", I solved that by adding QT_AUTO_SCREEN_SCALE_FACTOR=0 in /etc/environment and /etc/profile.d/gnome-qt.sh



    Although that solved the VLC issue the monitors sizes are still being wrongly detected, how can I solve it?



    Here are some Screen Shots



    This is the 29" monitor:



    This is the 29" monitor



    This is the 24" monitor:



    This is the 24" monitor



    Info on the nvidia driver:



    Info on the nvidia driver










    share|improve this question



























      1












      1








      1


      1





      I just fresh installed Ubuntu 18.04, after some hassle I was able to install the nvidia-driver-396. I run a dual monitor setup being one a 29" ultra wide and one 24" 1080p, when I had Ubuntu 16.04 the system detected the monitors sizes without a problem, but for some reason on Ubuntu 18.04 the 29" is being detected as 34" and the 24" is being detected as 7", odd thing is that their resolutions are correct it is just the monitor size that is wrong.



      VLC for some reason had huge icons on the "detected 7" monitor", I solved that by adding QT_AUTO_SCREEN_SCALE_FACTOR=0 in /etc/environment and /etc/profile.d/gnome-qt.sh



      Although that solved the VLC issue the monitors sizes are still being wrongly detected, how can I solve it?



      Here are some Screen Shots



      This is the 29" monitor:



      This is the 29" monitor



      This is the 24" monitor:



      This is the 24" monitor



      Info on the nvidia driver:



      Info on the nvidia driver










      share|improve this question















      I just fresh installed Ubuntu 18.04, after some hassle I was able to install the nvidia-driver-396. I run a dual monitor setup being one a 29" ultra wide and one 24" 1080p, when I had Ubuntu 16.04 the system detected the monitors sizes without a problem, but for some reason on Ubuntu 18.04 the 29" is being detected as 34" and the 24" is being detected as 7", odd thing is that their resolutions are correct it is just the monitor size that is wrong.



      VLC for some reason had huge icons on the "detected 7" monitor", I solved that by adding QT_AUTO_SCREEN_SCALE_FACTOR=0 in /etc/environment and /etc/profile.d/gnome-qt.sh



      Although that solved the VLC issue the monitors sizes are still being wrongly detected, how can I solve it?



      Here are some Screen Shots



      This is the 29" monitor:



      This is the 29" monitor



      This is the 24" monitor:



      This is the 24" monitor



      Info on the nvidia driver:



      Info on the nvidia driver







      drivers nvidia multiple-monitors display-resolution






      share|improve this question















      share|improve this question













      share|improve this question




      share|improve this question








      edited Aug 19 at 19:43









      WinEunuuchs2Unix

      41.7k1070158




      41.7k1070158










      asked Aug 19 at 16:11









      Alexandre Krabbe

      63




      63






















          2 Answers
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          0














          This problem does not seem to be linked to drivers, since I use the open source drivers for my internal Intel video card (Core i7). It is connected via HDMI directly.



          Seems that many (all?) Samsung monitors are detected as 7". Mine is 32" big, but still detected as 7" (UE32B7090).



          I filed a bug: https://bugs.launchpad.net/ubuntu/+source/gnome-shell/+bug/1792167






          share|improve this answer































            0














            I had a similar issue. I have a lapotop with an external 23" monitor and used to work fine in ubuntu mate 16.04. When I updated to ubuntu mate 18.04 it was detected as 142" and everything look zoomed.
            I run




            export QT_AUTO_SCREEN_SCALE_FACTOR=0




            then reboot and the monitor was detected right!
            This was my source: https://ubuntuforums.org/showthread.php?t=2390362
            Hope this help!






            share|improve this answer





















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              2 Answers
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              active

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              0














              This problem does not seem to be linked to drivers, since I use the open source drivers for my internal Intel video card (Core i7). It is connected via HDMI directly.



              Seems that many (all?) Samsung monitors are detected as 7". Mine is 32" big, but still detected as 7" (UE32B7090).



              I filed a bug: https://bugs.launchpad.net/ubuntu/+source/gnome-shell/+bug/1792167






              share|improve this answer




























                0














                This problem does not seem to be linked to drivers, since I use the open source drivers for my internal Intel video card (Core i7). It is connected via HDMI directly.



                Seems that many (all?) Samsung monitors are detected as 7". Mine is 32" big, but still detected as 7" (UE32B7090).



                I filed a bug: https://bugs.launchpad.net/ubuntu/+source/gnome-shell/+bug/1792167






                share|improve this answer


























                  0












                  0








                  0






                  This problem does not seem to be linked to drivers, since I use the open source drivers for my internal Intel video card (Core i7). It is connected via HDMI directly.



                  Seems that many (all?) Samsung monitors are detected as 7". Mine is 32" big, but still detected as 7" (UE32B7090).



                  I filed a bug: https://bugs.launchpad.net/ubuntu/+source/gnome-shell/+bug/1792167






                  share|improve this answer














                  This problem does not seem to be linked to drivers, since I use the open source drivers for my internal Intel video card (Core i7). It is connected via HDMI directly.



                  Seems that many (all?) Samsung monitors are detected as 7". Mine is 32" big, but still detected as 7" (UE32B7090).



                  I filed a bug: https://bugs.launchpad.net/ubuntu/+source/gnome-shell/+bug/1792167







                  share|improve this answer














                  share|improve this answer



                  share|improve this answer








                  edited Sep 12 at 15:05

























                  answered Sep 12 at 14:55









                  darkdragon

                  11




                  11

























                      0














                      I had a similar issue. I have a lapotop with an external 23" monitor and used to work fine in ubuntu mate 16.04. When I updated to ubuntu mate 18.04 it was detected as 142" and everything look zoomed.
                      I run




                      export QT_AUTO_SCREEN_SCALE_FACTOR=0




                      then reboot and the monitor was detected right!
                      This was my source: https://ubuntuforums.org/showthread.php?t=2390362
                      Hope this help!






                      share|improve this answer


























                        0














                        I had a similar issue. I have a lapotop with an external 23" monitor and used to work fine in ubuntu mate 16.04. When I updated to ubuntu mate 18.04 it was detected as 142" and everything look zoomed.
                        I run




                        export QT_AUTO_SCREEN_SCALE_FACTOR=0




                        then reboot and the monitor was detected right!
                        This was my source: https://ubuntuforums.org/showthread.php?t=2390362
                        Hope this help!






                        share|improve this answer
























                          0












                          0








                          0






                          I had a similar issue. I have a lapotop with an external 23" monitor and used to work fine in ubuntu mate 16.04. When I updated to ubuntu mate 18.04 it was detected as 142" and everything look zoomed.
                          I run




                          export QT_AUTO_SCREEN_SCALE_FACTOR=0




                          then reboot and the monitor was detected right!
                          This was my source: https://ubuntuforums.org/showthread.php?t=2390362
                          Hope this help!






                          share|improve this answer












                          I had a similar issue. I have a lapotop with an external 23" monitor and used to work fine in ubuntu mate 16.04. When I updated to ubuntu mate 18.04 it was detected as 142" and everything look zoomed.
                          I run




                          export QT_AUTO_SCREEN_SCALE_FACTOR=0




                          then reboot and the monitor was detected right!
                          This was my source: https://ubuntuforums.org/showthread.php?t=2390362
                          Hope this help!







                          share|improve this answer












                          share|improve this answer



                          share|improve this answer










                          answered Dec 8 at 20:31









                          Pulpo

                          1




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