Arch Linux

yaroslav23

Member

Registered: 2019-05-16

Posts: 2

Tearing with Nvidia video card

When I scroll the pages in Firefox, some strange horizontal lines with some kind of blur effect appears on my screen. Is this situation called tearing? How can I fix it?

I use Nvidia GeForce GTX 550 Ti (GF116) video card with nouveau video driver. I've tried to switch to the proprietary driver, but it doesn't help at all. When i disable smooth scrolling the lines disappear.

jonno2002

Member

Registered: 2016-11-21

Posts: 916

Re: Tearing with Nvidia video card

for nvidia driver:  https://wiki.archlinux.org/index.php/NV … en_tearing

for nouveau driver: https://wiki.archlinux.org/index.php/No … tical_Sync

wiki usually has all you need to know

Last edited by jonno2002 (2019-05-17 01:42:30)

yaroslav23

Member

Registered: 2019-05-16

Posts: 2

Re: Tearing with Nvidia video card

for nvidia driver:  https://wiki.archlinux.org/index.php/NV … en_tearing

for nouveau driver: https://wiki.archlinux.org/index.php/No … tical_Sync

wiki usually has all you need to know

When i try use command

compton -b --paint-on-overlay --unredir-if-possible --backend xr_glx_hybrid --vsync drm --glx-swap-method -1 --glx-no-stencil

I have this output:

compton doesn't accept positional arguments

seth

Member

From: Won't reply 2 private help req

Registered: 2012-09-03

Posts: 78,500

Re: Tearing with Nvidia video card

strange horizontal lines with some kind of blur effect

Is not "tearing". Tearing happens when the scanout buffer is not in sync w/ the outputs vblank interval. If there's a static offset, you'll get one fractional line (no blur) if it's completely randomly async, the line jumps across the screen.

When i disable smooth scrolling the lines disappear.

Sounds more like a client (FF) bug.
Try glxgears. It will tell you whether the output is sync'd (so the fps are capped) and it's usually pretty good at exposing vsync issues.

Edit: maximize the glxgears window or somehow otherwise ensure that it crosses the screen area where you've seen the issue w/ FF.

Last edited by seth (2019-05-17 14:47:21)

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