Nvidia Video Tearing

[mooreted]

Running Ubuntu 14.04 x64 with Nvidia GTX 650 and driver version: 331.38

This is weird: When I watch any video in Unity, Xfce (with or without compositing, with or without compton) and OpenBox I get video tearing. I do not get video tearing in Fluxbox.

In compiz I have set Vsync, force redraw, undirect full-screen windows and set the refresh rate to 60mhz. I have turned off flipping and enabled Vsync in nvidia-settings.

Why would Fluxbox work when no other does? Maybe I'll just switch to Flux.

[mooreted]

Ok, it gets even weirder. In Fluxbox, if I run xfce4-panel the video tearing comes back. No video tearing with stock Fluxbox. This makes no sense.

[mooreted]

Upgraded to Nvidia 340.24, no change. I guess I'll just have to put up with it.

[mc4man]

Appears to be fairly common with kepler chips, maybe something in here will alleviate..
https://devtalk.nvidia.com/default/t...ing-desktop/1/
(I no longer have a desktop, on my optimus laptops, 660m & 775m, nvidia thru nvidia-prime is worthless due to tearing everywhere so I just use Intel in linux sessions.

[mooreted]

Thanks, I'll check it out. It does seem to be a very common problem.

[mooreted]

Ok, took some doing, but I fixed it as follows:

Open a CLI and do:

sudo nvidia-xconfig

Then:

sudo nvidia-settings

Set your screen resolution and refresh rate in the Xserver settings (I set mine to 1920x1200 @60hz) and save it to xorg.conf

Then do:

sudo nano /etc/X11/xorg.conf

Edit the device section thusly:

Section "Device"
Identifier "Device0"
Driver "nvidia"
VendorName "NVIDIA Corporation"
BoardName "GeForce GTX 650"
Option "RegistryDwords" "PerfLevelSrc=0x2222"
Option "TripleBuffer" "True"
EndSection

This sets the card to performance mode and enables triple buffering.

In nvidia-settings/OpenGL set:

Sync to Vblank
Allow Flipping
Use Conformant Texture Clamping

Save your configuration and restart the X-server.

[BODYPRINT]

Thanks mooreted.

That worked great!

[mooreted]

Thanks mooreted.

That worked great!

You are welcome. Glad I could help. Happy computing.

[rqm91]

PerfLevelSrc=0x2222 sets performance level to a fixed performance level, better to use PerfLevelSrc=0x2233 instead, otherwise your graphics card will be set to the MAX level with a higher minimum clock frequency and a higher minumum transfer rate which may cause overheating. Anyway, enabling tripple buffering fixed my tearing problem, thanks.