Screen contents are not being redrawn unless moving window off screen.

[Piotr Kloc]

Nvidia 340.24 Ubuntu 14.04.1 GTX 550Ti

Let's say that I'm scrolling through web page in firefox. It's not redrawing so I have to drag window for it to redraw.
Another example: I'm in Ubuntu Tweak, just toggled some stuff but it's not showing button change. I have to drag window off screen to properly redraw.
Another example: Nautilus, I'm scrolling but it's not showing that it's scrolling. Again need to move window off screen and back to see changes.
Another one: I'm writing right now and when I press Enter nothing happens, I have to press it again but cursor goes two rows down. Oh and now word "rows" is still in previous line with cursor so I have one ghost cursor and one in front.

I think it's understandable now.

I have this bug since 14.04 alpha, I though it's some dev crap and just made switch to Arch. Since 14.04.1 you have nice Vsync so I'm back.

My guess: Someone at Cannonical tried to implement "reuse screen contents" from Kwin but failed.

[Piotr Kloc (pepko94)]

After some tests I can say it's compiz or nvidia blob. I have forced full scene repaints in CCSM for now.

[Piotr Kloc (pepko94)]

It's Nvidia's problem.
https://devtalk.nvidia.com/default/topic/729908/linux/-gt-334-21-redrawing-problems-in-gnome-3-10-3-12-gtx-580/4/
Hopefully it will be fixed by end of January.

[Jaime Pérez (jaime-91)]

I mark as invalid as is not a unity issue and its being worked on