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CaféHaine

Member

Registered: 2017-07-09

Posts: 9

Website

[Solved] Screen refresh rate issue

Hi,

Just switched from nouveau to the nvidia driver because of poor performances in 3D applications, and now that my framerate is greater than 30 I discovered an issue.

I have a multi-screen setup, and one of the screen is a 43 Hz screen.

Whenever an app is vsynced, it is locked at 43 Hz instead of the 60 Hz of the screen that the app is running on.
(apps tested were supertuxkart, gfxbench and glxgears)

The screen, however, displays content at 60 fps (no lag when running testufo.com)

My GPU is a GTX 660Ti

$[ 0 ] 15:57      ~      > pacman -Q nvidia xorg-server
nvidia 387.34-8
xorg-server 1.19.5-1

Any idea on how to fix this issue ?

Thanks for reading !

Last edited by CaféHaine (2017-12-09 15:31:21)

heisenberg

Member

Registered: 2017-05-27

Posts: 87

Re: [Solved] Screen refresh rate issue

Probably not but maybe it's related -> https://bbs.archlinux.org/viewtopic.php?id=232354

CaféHaine

Member

Registered: 2017-07-09

Posts: 9

Website

Re: [Solved] Screen refresh rate issue

I don't think it's that since I don't use any compositing and my screen can display 60fps when the application is not vsynced
(now tested with glxgears, the same issue is happening)
EDIT: also after reading more of the post you linked, I'm using an AMD CPU, in which there is no hybrid technology, so it is not related

Last edited by CaféHaine (2017-12-09 15:22:55)

seth

Member

From: Won't reply 2 private help req

Registered: 2012-09-03

Posts: 76,244

Re: [Solved] Screen refresh rate issue

grep -C8 __GL_SYNC_DISPLAY_DEVICE  /usr/share/doc/nvidia/README

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CaféHaine

Member

Registered: 2017-07-09

Posts: 9

Website

Re: [Solved] Screen refresh rate issue

I already set the synced screen to one of the 60 Hz one

CaféHaine

Member

Registered: 2017-07-09

Posts: 9

Website

Re: [Solved] Screen refresh rate issue

Sorry you were right !
It seems that the setting I put in nvidia-settings did not export the variable.
When manually exporting the variable before starting the program it works !
Thanks a lot !