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[Aerto <792896@xxxxxxxxxxxxxxxxxx>]

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

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https://bugs.launchpad.net/bugs/792896

Title:
  Fast Preview Hangs or Crashes since 2011.0

Status in Hugin - Panorama Tools GUI:
  Confirmed

Bug description:
  Upgraded from 2010.4 to 2011.0.0 and it has hung 3 times in about 15
  sessions.  All three hangs happened while doing the same thing.....
  new session, load images, load a lens profile, set the canvas size
  (Calculate optimal size), save-as and save profile then click on GL
  (fast preview) button.  Fast preview window comes up, shows anchor
  image and then hangs.

  Is not reproducible.  Running 2011.0.0.0fd3e119979c built by Matthew
  Petroff on 64-bit Win7.

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