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Old 10-17-11, 08:01 AM   #1
jsnjack
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Default Nouveau problem: Video tearing

Hello. I have just re-enable nouveau driver on my fedora 15 system. I did it because of xorg high CPU usage (90%) on the nvidia driver (Do you know how to fix it?). And a problem goes away. I have fast and useful desktop environment (gnome 3)

But if I try to watch video at my system with nouveau driver, there are horizontal lines (tearing). Please, help me to fix it.

I found out that the problem may be solved by enabling Vblank sync. I did it in this way:
I created xorg.conf with Option "GLXVBlank" "True" . But it doesn't help me.

P.S. Pentium E2200, 2 Gb RAM, Geforce 7300 GT 256 Mb, Fedora 15
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Old 10-17-11, 11:31 AM   #2
artem
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Default Re: Nouveau problem: Video tearing

driconf?
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Old 10-17-11, 02:17 PM   #3
mocharhw
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Default Re: Nouveau problem: Video tearing

There's an environment variable that needs to be set. Check the nouveau documentation.
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Old 10-17-11, 02:50 PM   #4
jsnjack
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Default Re: Nouveau problem: Video tearing

Quote:
Originally Posted by artem View Post
driconf?
I have already installed driconf. Please, check my configuration:
1. Method to limit rendering latency --- Let the graphic hardware emit the software interrupt and sleep.
2. Synchronization with vertical refresh --- Always synchronize with vertical refresh, application choose the minimum swap interval
3. Support larger textures not guaranteed to fit into graphic memory --- At least one texture must fit under worst-case assumption

With this options it doesn't take any effect (still tearing)
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Old 10-17-11, 02:53 PM   #5
jsnjack
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Default Re: Nouveau problem: Video tearing

Quote:
Originally Posted by mocharhw View Post
There's an environment variable that needs to be set. Check the nouveau documentation.
What kind of variable? I found out only Option "GLXVBlank" "True". But it doesn't help too.
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Old 10-18-11, 02:17 AM   #6
artem
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Default Re: Nouveau problem: Video tearing

Are you running compiz or Kwin4? If so, you must change VSync configuration in themselves.
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Old 10-18-11, 03:26 AM   #7
jsnjack
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Default Re: Nouveau problem: Video tearing

Quote:
Originally Posted by artem View Post
Are you running compiz or Kwin4? If so, you must change VSync configuration in themselves.
No compiz, and I guess no kwin4. I have only default fedora 15 configuration with gnome 3.
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Old 10-18-11, 04:07 AM   #8
artem
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Default Re: Nouveau problem: Video tearing

Gnome 3 also uses a compositing manager - check Gnome 3 settings.
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Old 10-18-11, 04:12 AM   #9
artem
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Default Re: Nouveau problem: Video tearing

--dupe, delete--
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Old 10-18-11, 02:28 PM   #10
jsnjack
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Default Re: Nouveau problem: Video tearing

Quote:
Originally Posted by artem View Post
Gnome 3 also uses a compositing manager - check Gnome 3 settings.
Mutter is a compositing manager for GNOME 3, isn't it? So, some people says that you can't disable compositing in it. It can't work without compositing. I think, GNOME 3 will go to fallback mode without compositing.

Anyway, I didn't find any configuration in GNOME 3. I installed gnome-tweak-tool and dconf-editor and found nothing. How can I find Vsync in mutter?
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