I have a GTX 750 ti and I'm using Ubuntu 18.04. I have never had problems before with graphics drivers not working well. So before I installed drivers, I was getting massive amounts of screen tearing and lag. Afterwards, I still notice a lot of lag in animations (clicking "Show Applications", maximizing windows, minimizing windows, etc.) and sometimes when moving windows around or resizing them. When scrolling through web pages on browsers it will lag and I notice screen tearing. I have tried installing many different drivers, including the nvidia-375 and nvidia-384 drivers that are in the default Ubuntu repository. I also tried using drivers from the Graphics Drivers repo (https://launchpad.net/~graphics-drivers/+archive/ubuntu/ppa). No matter what I do, it never gets rid of lag in the animations or screen tearing within browsers.
1 Answer
OK now i can say this is 95% solved,
∘ 1/ The real problem comes down to Refresh Rate and Sync Rate of the Nvidia card and the screen(s)
‣ With nvidia-prime then there is no possibility of vsync yet - arghhhh
With Nvidia's drivers for linux and"Optimus" cards they left out the simple code to do this to save resources for the masses - STUPID!!!!!
‣ Get PRIME Synchronization on Optimus
Solution (now for none specific Nvidia Drivers - AWESOME!)
To check if it (Synchronization) is set or not set use this command:
sudo cat /sys/module/nvidia_drm/parameters/modeset
∘ It should say "y" for modeset=1, which means it is synchronized at 60 fps (I believe) for your Monitor. ... ex. HDMI-1-1, or eDP-1-1
∘ If Not - Create a new file in /etc/modprobe.d/nvidia-drm-nomodeset.conf
sudo gedit /etc/modprobe.d/nvidia-drm-nomodeset.conf
∘ and make sure the following line is present;
options nvidia-drm modeset=1 ∘ after Update Intramfs and Reboot
sudo update-initramfs -u
• reboot
ALSO reducing Swappiness may help to lower swappiness also (if you have lots of RAM)...
∘ To check the swappiness value (default=60)
$ cat /proc/sys/vm/swappiness
sudo gedit /etc/sysctl.conf
‣ Search for vm.swappiness and change its value as desired. If vm.swappiness does not exist, add it to the end of the file like so:
# sharply reduce Swappiness inclination
vm.swappiness=1
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after doing "sudo gedit /etc/modprobe.d/nvidia-drm-nomodeset.conf" and then adding the line "options nvidia-drm modeset=1" i get stuck on a black screen with the line "/dev/sdc1: clean" and it wont boot into the OS Sep 30, 2018 at 22:16
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So I’m able to access the command line, but not the operating system GUI stuff. I see that when I do “sudo cat /sys/module/nvidia_drm/parameters/modeset” it now returns “Y” Sep 30, 2018 at 22:30
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1please don't change
vm.swappiness
if "having lots of RAM" is your justification; it does not change what you think it changes– rvalueJun 29, 2020 at 1:49
nvidia-drivers-390
from the Ubuntu repositories instead? I could not get thegraphics-drivers
ppa to work properly. The only ones were from Ubuntu themselves.sudo ubuntu-drivers autoinstall
did the job. Check this link for more options.nvidia-drivers-390
does not solve the issue.