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[WFPokorny <wfpokorny@xxxxxxxxx>]

I hit the transparent main image window issue in gimp again today after
not having seen it for a long while.

Though I'm running 16.04 now, this issue goes back to Ubuntu 12.04 - at
least - for me. I 'believe' the bug and proposed fix in compiz the
nvidia folks ran down mid 2015 - and referenced in this thread - greatly
reduced how often I see windowing issues and the severity thereof. In
any case I've seen issue much less often over the past couple years.

Random info...

- Today I downloaded and installed the "CompizConfig Settings Manager"
using the Ubuntu Software installer. Scrolling down there was a section
called "Effects" where I deselected Animations as others herein
suggested. Gimp has been working fine since. (Immediately turning the
animation effects back on did not bring the gimp transparent image issue
back...)

- Prior to turning off the compiz animation effects, my usual work
around of starting gimp passing two images was working OK. Namely: 'gimp
tinyBogusTransparentWindow.jpg myRealImage.jpg' The second image window
shows up OK. You can also open multiple images via a right click in the
transparent window to get image windows you can see.

- I too run with many windows up. Often 30-40 - mostly xterm windows.
Like others the problem usually shows up only after having been running
for a long time - 19 days this time. Reboots, log out & in fixes the
issue.

- I also usually see other effects once compiz is messed up though they
are less dramatic then with gimp. The cursor sometimes doesn't show up
as it should in the firefox search window when firefox starts. Sometimes
an extra click in a window is needed for window focus to shift.

- When I see the issue with a transparent window in gimp, I can
sometimes get a first image window I can see if I just try starting gimp
repeatedly - which hints a race condition.

-Intel® Core™ i3-4130 in-built graphics. Two physical displays.

I'll update should I see issues again now that I have the compiz
animation effects off.

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https://bugs.launchpad.net/bugs/1371928

Title:
  Main window content fully transparent

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