Comment 47 for bug 792896

About #803080 which is marked as duplicate of this bug.

https://bugs.launchpad.net/hugin/+bug/803080

I have been a bit slow but I finally got around thinking that the behavior looked like that the GUI does not know which to draw, preview or window. So I turned of the 3D effects from the

system-> preferences -> appearance -> visual effects -> none (was previously extra).

After this the preview window draws correctly.

In short to layman it seems that the OpenGL window drawing is colliding with the drawing of the preview or the window is drawn on top of preview i.e Hugin draws the preview but the system refreshes the window on top of the preview. This would explain why the preview is shown only when user interacts with it.

If this works in Ubuntu 11.04 then it may be a problem also in Ubuntu's GUI libraries, not Hugin. Visually behavior reminds me of the Adobe Flash flickering which is also present (again) in my 64 bit 10.04 system.

Sorry it took so long for me to think about this.

Arto Huotari