I installed ubuntu version 18.04 on my computer but I get an unknown display error, I can't change the screen resolution, I can't change the screen brightness, I tried all the solutions available on the internet, please help.

  • 18.04 will not work very well with the 4000-series processors. It would be better to use 20.04 if you need an LTS or 21.04 if you don’t mind the shorter upgrade cycles. – matigo May 5 at 0:07
  • Thanks but since I will use the Ros application I have to use the 18.04 version. – Ipek Selimoglu May 5 at 11:08

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