Glitch with 3D environements

[Eric Boucher]

Hi everyones, i use Kazam and it's pretty, considering others ones...

But when using some 3D environements, Kazam is making kinds of glitch in black lines...

I let's you see this yourself :
http://www.youtube.com/watch?v=Tfn4wW7EecE

Ubuntu 12.04 X64 + Nvidia on experimental-310 driver.

Thanks :)

-- See Comment #7 for a workaround/solution.

[Gareth Murphy (gareth-cpm)]

I don't think this bug is a duplicate of the one mentioned at all... I see this when recording on Ubuntu 13.04, regardless of the codec used.

I'm using Nvidia drivers 313, although I'm guessing it's related to Compiz rather than the Nvidia drivers. No black flickering is present when recording a single window.

[Eric Boucher (bouchereric0000)]

Personally, i said "may", not are...

The problem may also be related to Compiz...

PS: You use beta Nvidia drivers ?

[Gareth Murphy (gareth-cpm)]

Yes, I'm using the Nvidia beta drivers on Ubuntu 13.04.

[Gareth Murphy (gareth-cpm)]

OK so I ran a quick test by switching back to the nouveau driver and recording a video; no black flickering. I was wrong in guessing this being a Compiz issue... it looks to be related to Nvidias drivers in some way.

[Gareth Murphy (gareth-cpm)]

Eric, you don't happen to have multiple monitors do you? Through more testing I've found disabling one of my two monitors works to prevent any flickering when doing a recording.

[Eric Boucher (bouchereric0000)]

Yes, i have 2 monitors but most of the time my second monitor is desabled so pretty same as you....

[Eric Boucher (bouchereric0000)]

I recheck the Nvidia settings and I FOUND !!!!

I share my solution to you :

Open Nvidia X Settings
Go to OpenGL Settings
UnCheck "Allow Flipping"
Put Quality on "HIGH" (It's always fun :) )

Have fun !

[Gareth Murphy (gareth-cpm)]

You're right, that worked! :)

After hours of messing with different drivers, xrandr, disper, xorg.conf modelines / options to get a non-standard resolution (720p) working and now this discovery by yourself, I finally have a nice screencap setup.

Cheers for the help Eric!

[David Klasinc (bigwhale)]

Great find Eric! Thank you all for contribution.

[David Klasinc (bigwhale)]

Apparently this was not Kazam's bug, so I'll close this.

Thanks again!

[Stradus (stradus)]

Hi
I turned off allow flipping on NVIDIA 367.57 and Kazam 1.4.5
Thx! GG