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Vitor avatar Ubuntu

Ubuntu 20.04.3 - Display resolution stuck at 640x480 after fresh install

cn flag
Vitor

The Problem

So, this was my first time doing this. I prepared the bootable pendrive, followed the steps of installation and saw everything working fine using the preview feature, with the correct resolution: 1920x1080. The problem is: after i properly installed Ubuntu and rebooted my PC, the screen resolution dropped to 640x480 and the options to change that back are not available in the configs.

I’ve attempted finding a solution on my own, but everything I tried to do didn’t work and/or made things worse, to the point where it would not boot and I had to reinstall it. I decided, then, to look for help and ask a question here.

Thanks in advance!

More information

  • Motherboard: Gigabyte Ga-78lmt-s2 Am3 Am3+ Fx 4100-Fx 8370e
  • Graphic card: NVIDIA GeForce GTX 550 Ti

Running xrandr returns:

xrandr: Failed to get size of gamma for output default
Screen 0: minimum 640 x 480, current 640 x 480, maximum 640 x 480
default connected primary 640x480+0+0 0mm x 0mm
   640x480       73.00*

Running inxi -G returns:

Graphics: 
  Device-1: NVIDIA GF116 [Geforce GTX 550 Ti] driver: N/A
  Display: x11 server: X.Org 1.20.13 driver: fbdev,nouveau
  unloaded: modesetting,vesa resolution: 640x480~73Hz
  OpenGL: renderer: llvmpipe (LLVM 12.0.0 256 bits) v: 4.5 Mesa 21.0.3

Things i've tried

Solutions from https://snawarhussain.com/blog/ubuntu/linux/troubleshoot/ubuntu-20.04-resolution-stuck-at-1280-x-720/ alongside with Failed to get size of gamma for output default when trying to add new screen resolution.

xrandr: Failed to get size of gamma for output default still haunts.

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ChanganAuto avatar
us flag
ChanganAuto
Have you selected the option to install additional drivers? If not you can do it now in Additional Drivers.
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br flag
trond hansen
what graphics driver are you using? and what options do you get when searching for additional drivers?
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Matthias Lenmher avatar
nl flag
Matthias Lenmher
are you on a hybrid graphic configuration?
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Vitor avatar
cn flag
Vitor
@ChanganAuto, i don't think i have.
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Vitor avatar
cn flag
Vitor
@trondhansen I'm not sure. When i open "Additional Drivers", i see my graphic card described there: "NVIDIA CORPORATION: GF116 [Geforce GTX 550 Ti]". Just below it, i see: "This device is using a manually-installed driver." Then, a lot of options, but i can't choose any of them, just the one that it is already selected: "Continue using a manually installed driver".
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Vitor avatar
cn flag
Vitor
@MatthiasLenmher Hmm, i use just one GPU, the one i mentioned, so i think not.
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Score:1
Vitor avatar Ubuntu
cn flag
Vitor

Ok, i found a solution to this problem of mine!

Here: https://www.fosslinux.com/41008/install-nvidia-driver-on-ubuntu-command-line-and-gui-ways.htm

I just followed the tutorial and installed the nvidia-driver-390 by cmd, since i was not able to change it in "Additional Drivers". Once i rebooted the system, it started in 1920x1080 and many others are now available at display settings.

Thanks to those who tried to help.

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