Ubuntu – Ubuntu 18.04 after installing NVIDIA graphics drivers still getting lag

18.04driversgraphicsnvidia

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.

Best 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

Related Solutions

Nvidia Screen Tearing in Ubuntu – How to Fix

Create /etc/X11/xorg.conf.d/20-intel.conf containing

Section "Device"
   Identifier  "Intel Graphics"
   Driver      "intel"
   Option      "TearFree"    "true"
EndSection

That should fix everything.

Source is https://wiki.archlinux.org/index.php/Intel_graphics#Tear-free_video

Note: This only works if you're using bumblebee.

Note from comments: Since 10.10 the config file directory is now /usr/share/X11/xorg.conf.d

Starting from Ubuntu 16.04 LTS * you can use the following script to switch between NVIDIA and INTEL's graphics cards and besides it corrects the video/screen tearing on INTELs environment: https://github.com/bauca/graphics-switcher

Ubuntu – Ubuntu 16.04: NVIDIA drivers don’t work for GTX 960M

I was facing same problem. I use the same GPU. Skylake and gtx960m

Here is how i fixed it.

Disable the secure boot and reboot

update the gl alternatives: run

sudo update-alternatives --config x86_64-linux-gnu_gl_conf

choose the nvidia drivers you have. this is what it looks for me:

There are 3 choices for the alternative x86_64-linux-gnu_gl_conf (providing /etc/ld.so.conf.d/x86_64-linux-gnu_GL.conf).

Selection    Path                                       Priority   Status
------------------------------------------------------------
* 0            /usr/lib/nvidia-375/ld.so.conf              8604      auto mode
  1            /usr/lib/nvidia-375-prime/ld.so.conf        8603      manual mode
  2            /usr/lib/nvidia-375/ld.so.conf              8604      manual mode
  3            /usr/lib/x86_64-linux-gnu/mesa/ld.so.conf   500       manual mode

Now your nvidia device files should be created in /dev.

In case you are stuck in login-loop, just purge and install nvidia drivers again and login by logging into tty1
```
sudo apt-get --purge remove nvidia-*
apt-cache search nvidia 
```
(you will find some versions of drivers - choose one to test install)
```
sudo service lightdm stop
sudo apt-get install nvidia-375 (for example)
sudo service lightdm start
```

Everything works.

Best Answer

Related Solutions

Nvidia Screen Tearing in Ubuntu – How to Fix

Ubuntu – Ubuntu 16.04: NVIDIA drivers don’t work for GTX 960M

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