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I have Ubuntu 22.04 with

$ lspci | grep VG
08:00.0 VGA compatible controller: NVIDIA Corporation GK208B [GeForce GT 730] (rev a1)

Today the resolution of the display was forced to 1024x728 (refresh rate 76 Hz) with no options. I am getting the error xrandr: Failed to get size of gamma for output default, so I tried the solutions of these posts (1), (2), (3). But nothing has changed.

How can I force a resolution of 1920 x 1080? Or let the system recognize the display automatically as before?

Thank you

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  • Did you install Nvidia drivers? If so, how?
    – ChanganAuto
    May 26, 2022 at 6:11
  • I did not: they were already there from the installation of U. 22.04 given that the display was recognized and recognized with the right definition. I have installed sudo ubuntu-drivers autoinstall though. The problem happen suddenly yesterday...
    – Gigiux
    May 27, 2022 at 10:55

1 Answer 1

Reset to default
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Solved it with sudo apt install nvidia-driver-470

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