8

I have setup Ubuntu 20.04 in Dual boot with Windows 10.

On Windows 10 @ 3840 x 2160 (16:9) resolution I do not have any issues with video, smooth scrolling, IDE, games.

However on Ubuntu @ 3840 x 2160 (16:9) resolution, I get stuttering low FPS for video, jaggy/rough scrolling.

When I set it to 2048 x 1152 (16:9) resolution it is way smoother and no issues.

My hardware info is the following:

Intel(R) Core(TM) i5-4690K CPU @ 3.50GHz
Palit GeForce RTX 2070 8Gb
16Gb DDR3 2400mhz Corsair Vengeance RAM
LG 27inch 4K Monitor

These are the following things I've tried:

  • Swapped HDMI to Displayport from GPU to Monitor
  • Tried the prorietary Nvidia drivers (version 440), X.org drivers
  • Restarting Gnome
  • Updating the latest drivers and patches from Ubuntu

I am happy to use the monitor at a lower resolution but I am curious as to what the bottleneck is here?

Is there any fixes?

tomaytotomato
  • 201
  • You can try this driver sudo add-apt-repository ppa:graphics-drivers/ppa && apt update then sudo apt install nvidia-graphics-drivers-440 it is a bit more up to date. The Nvidia drivers are not great on Ubuntu. – Mark Kirby Jun 30 '20 at 12:15
  • I believe ubuntu/gnome/nvidia is just weak in graphics performance compared to Windows. I use ubuntu for 16 years. – Jake Jul 27 '22 at 06:52

3 Answers3

0

Try disabling fractional displaying on displays. Go to Ubuntu settings / Displays, and set 100% for scale, and disable the "Fractionl Scaling" feature:

Ubuntu settings

Source: Chrome menus too slow after enabling fractional scaling in Ubuntu 20.04

Juan Ignacio Barisich
  • 131
  • I'm using 100% with no franctional scaling, feels like 10Hz. reboot to Windows-10 feels like 60Hz – Jake Jul 27 '22 at 06:50
0

Use a newer beta driver for Nvidia. 465 works.

DieInterim
  • 1
-1

Install Ubuntu 18.04 LTS instead. There seems to be some incompatibility issues with nvidia drivers and the latest version of Ubuntu. See my answer here to a similar question.

Watercolours
  • 234
  • 1
  • 3