On Mon, May 26, 2014 at 1:56 PM, Antonio Roberts antonio@hellocatfood.comwrote:
Hi,
I'm running Pd Extended 0.43.4 on Ubuntu 14.04. I've got a Dell XPS13 with Intel Ivybridge Mobile i7 graphics and I'm getting lots of screen tear/flicker when I go full screen with an external monitor attached. It doesn't matter if I'm full screen on the external or primary monitor, I still get lots of flicker.
Attached is an example patch that causes this problem (contains flashing colours)
I've noticed that if I don't go full screen (deleting border 0) then the flicker stops, but I then have the window borders and menu bar being displayed.
Is this a problem with GEM?
You can check by playing this youtube vidoe:
https://www.youtube.com/watch?v=5xkNy9gfKOg
If you have tearing in general, try to create a file called /etc/X11/xorg.conf.d/20-intel.conf with the following options:
Section "Device" Option "AccelMethod" "sna" Option "TearFree" "true" EndSection
(I assume you have an intel gfx card)
If that doesn't help, try to install compton ( https://github.com/chjj/compton) and run it like this: ./compton --backend glx --vsync opengl
(unless you run another compositor manager at the same time, that should work)
--
============================ antonio@hellocatfood.com http://www.hellocatfood.com ============================
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