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Force a video setting when booting without a monitor connected


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I run two machines through a KVM switch. If I boot Machine #2 (while working on Machine #1) it isn't connected to the monitor as it boots, so when I switch over to it the screen shows:




DSUB

Out of Range

95.1 kHz / 60 Hz




I can drop into tty1 and run sudo service lightdm restart and all is fine, but I'd really like it to start in graphical mode.



Any suggestions?



I've tried adding:




xrandr --output HDMI-1 --mode 1920x1080




to /etc/rc.local but that doesn't help.










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    0















    I run two machines through a KVM switch. If I boot Machine #2 (while working on Machine #1) it isn't connected to the monitor as it boots, so when I switch over to it the screen shows:




    DSUB

    Out of Range

    95.1 kHz / 60 Hz




    I can drop into tty1 and run sudo service lightdm restart and all is fine, but I'd really like it to start in graphical mode.



    Any suggestions?



    I've tried adding:




    xrandr --output HDMI-1 --mode 1920x1080




    to /etc/rc.local but that doesn't help.










    share|improve this question







    New contributor



    Kwilk 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








      I run two machines through a KVM switch. If I boot Machine #2 (while working on Machine #1) it isn't connected to the monitor as it boots, so when I switch over to it the screen shows:




      DSUB

      Out of Range

      95.1 kHz / 60 Hz




      I can drop into tty1 and run sudo service lightdm restart and all is fine, but I'd really like it to start in graphical mode.



      Any suggestions?



      I've tried adding:




      xrandr --output HDMI-1 --mode 1920x1080




      to /etc/rc.local but that doesn't help.










      share|improve this question







      New contributor



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











      I run two machines through a KVM switch. If I boot Machine #2 (while working on Machine #1) it isn't connected to the monitor as it boots, so when I switch over to it the screen shows:




      DSUB

      Out of Range

      95.1 kHz / 60 Hz




      I can drop into tty1 and run sudo service lightdm restart and all is fine, but I'd really like it to start in graphical mode.



      Any suggestions?



      I've tried adding:




      xrandr --output HDMI-1 --mode 1920x1080




      to /etc/rc.local but that doesn't help.







      linux boot graphics






      share|improve this question







      New contributor



      Kwilk 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 question







      New contributor



      Kwilk 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 question




      share|improve this question






      New contributor



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








      asked 25 mins ago









      KwilkKwilk

      1




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      New contributor



      Kwilk is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
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      Kwilk is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
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