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Installing Ubuntu 22.04.2.LTS and it is running very slow. When I type it takes about one second per character to type and the cursor lags around the screen.

Before installing if I “try ubuntu” in safe graphics mode using the usb install disk it runs fine, without lag. But as soon as it’s installed on the machine disk the performance tanks. It’s unusable.

Other posts suggested it could be to do with the swapfile, however I checked and it’s hardly being used.

This is my machine:

  • Laptop model: Inspiron 16 plus 7620
  • BIOS version: dell 1.11.0
  • CPU: i7 12700 H
  • Graphics: intel iris Xe graphics

Any help would be greatly appreciated - thanks!

Cemlyn
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1 Answers1

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I had the same problem with a Dell Inspiron 16 Plus 7620, Intel core i7, GeForce RTX 3050 Ti. Here is what I did to resolve the issue:

Open a terminal (CTRL + ALT + T)

Run "sudo nano /etc/default/grub"

Change this line:

GRUB_CMDLINE_LINUX_DEFAULT="quiet splash"

To:

GRUB_CMDLINE_LINUX_DEFAULT="quiet splash i915.enable_psr=0"

Run "sudo update-grub"

Run "sudo reboot"

John
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