Manjaro slow rendering of videos and full-screen apps

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1

I’ve recently upgraded to a larger SSD and installed Manjaro (gnome) on it.
Everything works fine, apps launch fast and loads in seconds but when I try to watch a video at a resolution higher than 480p it just slows down dramatically and it’s unwatchable. I have a 4k monitor but I’ve never had any problem watching videos on my previous archlinux-based distro, EndevaourOS.
This happens when using full-screen apps as well, for instance when I scroll a web page on Firefox text and images overlap and the overall experience is quite bad.
I was using open-source drivers and I tried to switch to proprietary (nvidia in this case) ones, but with no success. Could it be that the SSD is faulty? What else should I be checking?

$inxi -G                                       
Graphics:
Device-1: NVIDIA GM200 [GeForce GTX 980 Ti] driver: nvidia v: 455.45.01 
Display: x11 server: X.org 1.20.9 driver: nvidia 
resolution: <xdpyinfo missing> 
OpenGL: renderer: GeForce GTX 980 Ti/PCIe/SSE2 v: 4.6.0 NVIDIA 455.45.01

UPDATE: I discovered the problem is occurs only on Firefox (v83.0)… WHY DID YOU DO THIS TO ME MOZILLA :sob: I’ve disabled hardware acceleration as suggested here but with no success.

2

Are you running Gnone on Wayland or X, and what was you using on EndevaurOS as desktop environment?

3

I’m on gnome on x11 now.
I was using gnome for EndeavourOS as well.

4

Try wayland, :slight_smile: also maybe there was different Nvidia driver.

5

is there a particular reason why I should try switching to wayland? isn’t it considered less stable then xorg?

6

I would say not. Maybe you’ll miss some features like screen recording on apps that never bothered to implement some of the wayland protocols.

7

I found out that the problem exists only while using Firefox. I tried disabling hardware acceleration, rebooted but it didn’t solve the problem.

8

Any extensions or addons you are using.

Else I have no clue. :confused: Most likely Nvidia’s inferior driver stack.

9

I am not sure if already fixed or not.

You could try older kernel as Arch Linux - News: nvidia 455.28 is incompatible with linux >= 5.9 tells there was a problem with nvidia, as usual. (forgive me the smugness, I really hate that company)