[Bug 737706] [NEW] Firefox plugin overwrites root window

Gordon Ball 737706 at bugs.launchpad.net
Fri Mar 18 17:53:14 UTC 2011

Public bug reported:

Binary package hint: firefox

ubuntu 10.10, i386
xorg: 7.5+6ubuntu3
nvidia driver: 260.19.06-0ubuntu1
firefox 3.6.15+build1+nobinonly-0ubuntu0.10.10.1
metacity 2.30.2-0ubuntu1

After running flash content in the browser, the last frame shown remains
in some part of the graphics buffer, and bleeds through into black
pixels of any window moved on top of it. (ie, a semi-black background
image shows the last flash frame only in the black area, and a terminal
moved over the area shows the last frame everywhere except the white of
the characters).

I had originally assumed this was getting drawn onto the X root window,
but the effect is not stored in screencaptures with either gimp or
xvidcap. Killing firefox/plugin-container does not make the effect go
away. Restarting metacity does remove it.

I don't know if this is a bug in the flash plugin or plugin container
(presumably related to hardware acceleration/DRI), or somewhere else in
the X stack. Does anyone have suggestions for more useful diagnostics?

** Affects: firefox (Ubuntu)
     Importance: Undecided
         Status: New

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  Firefox plugin overwrites root window

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