Ubuntu fix screen resolution

Discover this issue when I deployed PIS into IPC.
As per requirement, the display needs to be shown in 1920*1080  resolution. But, instead, Ubuntu shows 640*480 resolution.





How I solved this?
  1. Update Ubuntu
    > sudo apt-get install

  2. Open file
    > sudo nano /etc/default/grub

  3. Change line

    #GRUB_GFXMODE = 640X480
    to
    GRUB_GFXMODE = 1920X1080

  4. Save the edited file.

  5. Update the file
    > sudo update-grub

  6. Reboot the IPC
    > sudo reboot

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