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After upgrading to 18.04 Ubuntu monitor is unknown


Debian monitor unknown and dual monitor setupNo DNS resolution after upgrade from ubuntu 14.04 to 16.04Problem upgrading Ubuntu to version 18.04Ubuntu 18.04 Mouse Pointer Blinks and disappears on one screen after setting HiDPI scaling with xrandrUbuntu 16.04 can not recognize HDMI-monitor, but Ubuntu 17.10 canHow do I use the KDE 5 monitor calibration tool?Ubuntu 18.04 keeps logging out after crashVirtual Machine Manager can't be launched after upgrade to Ubuntu 18.04Weird DNS problem with Ubuntu 18.04Ubuntu 18.04 intel vga hdmi not listed






.everyoneloves__top-leaderboard:empty,.everyoneloves__mid-leaderboard:empty,.everyoneloves__bot-mid-leaderboard:empty{ margin-bottom:0;
}







2















Have been running Ubuntu Mate 17.10 and just upgraded to 18.04 LTS.
But after upgrading my monitor settings are all wrong and can't set the proper resolution.
How can I resolve this?



enter image description here










share|improve this question



























  • Do you have an NVIDIA GPU? In that case, you might try reinstalling your graphics card driver and see if that helps (that worked for me when my monitor was suddenly classifier as "Unknown," although I'm not sure what caused it to loose its recognition).

    – HelloGoodbye
    Jun 20 at 11:57













  • You should also make sure you are not using a VGA adapter for your monitor. Use either DVI, HDMI, or Display Port. No VGA on either end.

    – Cliff Armstrong
    1 hour ago


















2















Have been running Ubuntu Mate 17.10 and just upgraded to 18.04 LTS.
But after upgrading my monitor settings are all wrong and can't set the proper resolution.
How can I resolve this?



enter image description here










share|improve this question



























  • Do you have an NVIDIA GPU? In that case, you might try reinstalling your graphics card driver and see if that helps (that worked for me when my monitor was suddenly classifier as "Unknown," although I'm not sure what caused it to loose its recognition).

    – HelloGoodbye
    Jun 20 at 11:57













  • You should also make sure you are not using a VGA adapter for your monitor. Use either DVI, HDMI, or Display Port. No VGA on either end.

    – Cliff Armstrong
    1 hour ago














2












2








2


3






Have been running Ubuntu Mate 17.10 and just upgraded to 18.04 LTS.
But after upgrading my monitor settings are all wrong and can't set the proper resolution.
How can I resolve this?



enter image description here










share|improve this question
















Have been running Ubuntu Mate 17.10 and just upgraded to 18.04 LTS.
But after upgrading my monitor settings are all wrong and can't set the proper resolution.
How can I resolve this?



enter image description here







ubuntu monitors






share|improve this question















share|improve this question













share|improve this question




share|improve this question








edited May 27 '18 at 16:56









Jeff Schaller

48.7k11 gold badges72 silver badges162 bronze badges




48.7k11 gold badges72 silver badges162 bronze badges










asked May 27 '18 at 16:14









BachaloBachalo

3082 gold badges6 silver badges17 bronze badges




3082 gold badges6 silver badges17 bronze badges
















  • Do you have an NVIDIA GPU? In that case, you might try reinstalling your graphics card driver and see if that helps (that worked for me when my monitor was suddenly classifier as "Unknown," although I'm not sure what caused it to loose its recognition).

    – HelloGoodbye
    Jun 20 at 11:57













  • You should also make sure you are not using a VGA adapter for your monitor. Use either DVI, HDMI, or Display Port. No VGA on either end.

    – Cliff Armstrong
    1 hour ago



















  • Do you have an NVIDIA GPU? In that case, you might try reinstalling your graphics card driver and see if that helps (that worked for me when my monitor was suddenly classifier as "Unknown," although I'm not sure what caused it to loose its recognition).

    – HelloGoodbye
    Jun 20 at 11:57













  • You should also make sure you are not using a VGA adapter for your monitor. Use either DVI, HDMI, or Display Port. No VGA on either end.

    – Cliff Armstrong
    1 hour ago

















Do you have an NVIDIA GPU? In that case, you might try reinstalling your graphics card driver and see if that helps (that worked for me when my monitor was suddenly classifier as "Unknown," although I'm not sure what caused it to loose its recognition).

– HelloGoodbye
Jun 20 at 11:57







Do you have an NVIDIA GPU? In that case, you might try reinstalling your graphics card driver and see if that helps (that worked for me when my monitor was suddenly classifier as "Unknown," although I'm not sure what caused it to loose its recognition).

– HelloGoodbye
Jun 20 at 11:57















You should also make sure you are not using a VGA adapter for your monitor. Use either DVI, HDMI, or Display Port. No VGA on either end.

– Cliff Armstrong
1 hour ago





You should also make sure you are not using a VGA adapter for your monitor. Use either DVI, HDMI, or Display Port. No VGA on either end.

– Cliff Armstrong
1 hour ago










2 Answers
2






active

oldest

votes


















2














I had this issue and first switched to nouveau driver which fixed my laptop's display, but did not allow me to connect a second monitor. I fixed that issue running:



sudo ubuntu-drivers devices


which showed that the nvidia driver was recommended.

driver : nvidia-driver-390 - distro non-free recommended
driver : xserver-xorg-video-nouveau - distro free builtin



So I then ran



sudo ubuntu-drivers autoinstall


which installed and used the nvidia driver.
After rebooting sudo shutdown -r now
it worked!



This is the post I followed to get those instructions.






share|improve this answer


























  • I'm getting sudo: ubuntu-drivers: command not found when I try this, and I don't find any package with that exact name. I find ubuntu-drivers-common, though; is that equivalent?

    – HelloGoodbye
    Jun 18 at 8:00













  • I checked and I think that is the package where my executable came from.

    – derricki
    Jun 19 at 20:59



















0














The autoinstall and shutdown -r commands worked beautifully for me. Thanks.






share|improve this answer








New contributor



Kevin Doyle is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
























    Your Answer








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    2 Answers
    2






    active

    oldest

    votes








    2 Answers
    2






    active

    oldest

    votes









    active

    oldest

    votes






    active

    oldest

    votes









    2














    I had this issue and first switched to nouveau driver which fixed my laptop's display, but did not allow me to connect a second monitor. I fixed that issue running:



    sudo ubuntu-drivers devices


    which showed that the nvidia driver was recommended.

    driver : nvidia-driver-390 - distro non-free recommended
    driver : xserver-xorg-video-nouveau - distro free builtin



    So I then ran



    sudo ubuntu-drivers autoinstall


    which installed and used the nvidia driver.
    After rebooting sudo shutdown -r now
    it worked!



    This is the post I followed to get those instructions.






    share|improve this answer


























    • I'm getting sudo: ubuntu-drivers: command not found when I try this, and I don't find any package with that exact name. I find ubuntu-drivers-common, though; is that equivalent?

      – HelloGoodbye
      Jun 18 at 8:00













    • I checked and I think that is the package where my executable came from.

      – derricki
      Jun 19 at 20:59
















    2














    I had this issue and first switched to nouveau driver which fixed my laptop's display, but did not allow me to connect a second monitor. I fixed that issue running:



    sudo ubuntu-drivers devices


    which showed that the nvidia driver was recommended.

    driver : nvidia-driver-390 - distro non-free recommended
    driver : xserver-xorg-video-nouveau - distro free builtin



    So I then ran



    sudo ubuntu-drivers autoinstall


    which installed and used the nvidia driver.
    After rebooting sudo shutdown -r now
    it worked!



    This is the post I followed to get those instructions.






    share|improve this answer


























    • I'm getting sudo: ubuntu-drivers: command not found when I try this, and I don't find any package with that exact name. I find ubuntu-drivers-common, though; is that equivalent?

      – HelloGoodbye
      Jun 18 at 8:00













    • I checked and I think that is the package where my executable came from.

      – derricki
      Jun 19 at 20:59














    2












    2








    2







    I had this issue and first switched to nouveau driver which fixed my laptop's display, but did not allow me to connect a second monitor. I fixed that issue running:



    sudo ubuntu-drivers devices


    which showed that the nvidia driver was recommended.

    driver : nvidia-driver-390 - distro non-free recommended
    driver : xserver-xorg-video-nouveau - distro free builtin



    So I then ran



    sudo ubuntu-drivers autoinstall


    which installed and used the nvidia driver.
    After rebooting sudo shutdown -r now
    it worked!



    This is the post I followed to get those instructions.






    share|improve this answer













    I had this issue and first switched to nouveau driver which fixed my laptop's display, but did not allow me to connect a second monitor. I fixed that issue running:



    sudo ubuntu-drivers devices


    which showed that the nvidia driver was recommended.

    driver : nvidia-driver-390 - distro non-free recommended
    driver : xserver-xorg-video-nouveau - distro free builtin



    So I then ran



    sudo ubuntu-drivers autoinstall


    which installed and used the nvidia driver.
    After rebooting sudo shutdown -r now
    it worked!



    This is the post I followed to get those instructions.







    share|improve this answer












    share|improve this answer



    share|improve this answer










    answered Sep 7 '18 at 18:31









    derrickiderricki

    212 bronze badges




    212 bronze badges
















    • I'm getting sudo: ubuntu-drivers: command not found when I try this, and I don't find any package with that exact name. I find ubuntu-drivers-common, though; is that equivalent?

      – HelloGoodbye
      Jun 18 at 8:00













    • I checked and I think that is the package where my executable came from.

      – derricki
      Jun 19 at 20:59



















    • I'm getting sudo: ubuntu-drivers: command not found when I try this, and I don't find any package with that exact name. I find ubuntu-drivers-common, though; is that equivalent?

      – HelloGoodbye
      Jun 18 at 8:00













    • I checked and I think that is the package where my executable came from.

      – derricki
      Jun 19 at 20:59

















    I'm getting sudo: ubuntu-drivers: command not found when I try this, and I don't find any package with that exact name. I find ubuntu-drivers-common, though; is that equivalent?

    – HelloGoodbye
    Jun 18 at 8:00







    I'm getting sudo: ubuntu-drivers: command not found when I try this, and I don't find any package with that exact name. I find ubuntu-drivers-common, though; is that equivalent?

    – HelloGoodbye
    Jun 18 at 8:00















    I checked and I think that is the package where my executable came from.

    – derricki
    Jun 19 at 20:59





    I checked and I think that is the package where my executable came from.

    – derricki
    Jun 19 at 20:59













    0














    The autoinstall and shutdown -r commands worked beautifully for me. Thanks.






    share|improve this answer








    New contributor



    Kevin Doyle is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
    Check out our Code of Conduct.


























      0














      The autoinstall and shutdown -r commands worked beautifully for me. Thanks.






      share|improve this answer








      New contributor



      Kevin Doyle is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
      Check out our Code of Conduct.
























        0












        0








        0







        The autoinstall and shutdown -r commands worked beautifully for me. Thanks.






        share|improve this answer








        New contributor



        Kevin Doyle is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
        Check out our Code of Conduct.









        The autoinstall and shutdown -r commands worked beautifully for me. Thanks.







        share|improve this answer








        New contributor



        Kevin Doyle is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
        Check out our Code of Conduct.








        share|improve this answer



        share|improve this answer






        New contributor



        Kevin Doyle is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
        Check out our Code of Conduct.








        answered 2 hours ago









        Kevin DoyleKevin Doyle

        1




        1




        New contributor



        Kevin Doyle is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
        Check out our Code of Conduct.




        New contributor




        Kevin Doyle is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
        Check out our Code of Conduct.



































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