I've tried the answer in: Screen tearing when scrolling and in games
but the config for me always fails to save (even when ran as sudo), seems permissions based.
Does Ubuntu support hardware acceleration in web browsers like Brave and Firefox?
Confirm that Secure Boot is disabled in your BIOS. (You may be able to re-enable it again at a later time).
Note: If you created /etc/X11/xorg.conf, please delete it (sudo rm -i /etc/X11/xorg.conf), and then log out.
The Nvidia drivers don't work well with Wayland. We'll change to X11/Xorg. Log out. Then, at your login screen, select your Username, then click on the icon in the lower-right of your screen, and select Ubuntu on X11/Xorg, then enter your password to continue logging in.
Start Firefox and open a few tabs (eBay, Amazon, etc.), then in terminal...
$ nvidia-smi (note that in my example, Xorg, gnome-shell, and Firefox are accelerated)
Sun Nov 21 16:45:32 2021
+-----------------------------------------------------------------------------+
| NVIDIA-SMI 470.82.00 Driver Version: 470.82.00 CUDA Version: 11.4 |
|-------------------------------+----------------------+----------------------+
| GPU Name Persistence-M| Bus-Id Disp.A | Volatile Uncorr. ECC |
| Fan Temp Perf Pwr:Usage/Cap| Memory-Usage | GPU-Util Compute M. |
| | | MIG M. |
|===============================+======================+======================|
| 0 NVIDIA GeForce ... Off | 00000000:02:00.0 Off | N/A |
| N/A 50C P0 N/A / N/A | 440MiB / 2002MiB | 8% Default |
| | | N/A |
+-------------------------------+----------------------+----------------------+
+-----------------------------------------------------------------------------+
| Processes: |
| GPU GI CI PID Type Process name GPU Memory |
| ID ID Usage |
|=============================================================================|
| 0 N/A N/A 3356 G /usr/lib/xorg/Xorg 206MiB |
| 0 N/A N/A 3557 G /usr/bin/gnome-shell 42MiB |
| 0 N/A N/A 220406 G /usr/lib/firefox/firefox 185MiB |
| 0 N/A N/A 220578 G /usr/lib/firefox/firefox 0MiB |
| 0 N/A N/A 260547 G /usr/lib/firefox/firefox 0MiB |
| 0 N/A N/A 1275517 G /usr/lib/firefox/firefox 0MiB |
+-----------------------------------------------------------------------------+
Start the Nvidia X Server Settings app (using the SUPER key), and check the following setting...
Confirm the following...
