Nouveau problem: Video tearing

[jsnjack]

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

[artem]

driconf?

[mocharhw]

There's an environment variable that needs to be set. Check the nouveau documentation.

[jsnjack]

Originally Posted by artem

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)

[jsnjack]

Originally Posted by mocharhw

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.

[artem]

Are you running compiz or Kwin4? If so, you must change VSync configuration in themselves.

[jsnjack]

Originally Posted by artem

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.

[artem]

Gnome 3 also uses a compositing manager - check Gnome 3 settings.

[artem]

--dupe, delete--

[jsnjack]

Originally Posted by artem

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?