[Bug 279240] [NEW] firefox dies mentioning RenderBadPicture and a failed assertion

[Martin von Gagern]

Public bug reported:

Binary package hint: firefox

firefox is extremely unstable on my intrepid at the moment. It dies
repeatedly without any discernible common cause. When started from the
command line, the error messages look like this:

QPixmap: Invalid pixmap parameters
The program 'firefox' received an X Window System error.
This probably reflects a bug in the program.
The error was 'RenderBadPicture (invalid Picture parameter)'.
  (Details: serial 3484417 error_code 176 request_code 152 minor_code 7)
  (Note to programmers: normally, X errors are reported asynchronously;
   that is, you will receive the error a while after causing it.
   To debug your program, run it with the --sync command line
   option to change this behavior. You can then get a meaningful
   backtrace from your debugger if you break on the gdk_x_error() function.)
Locking assertion failure.  Backtrace:
#0 /usr/lib/libxcb-xlib.so.0 [0xb64917c7]
#1 /usr/lib/libxcb-xlib.so.0(xcb_xlib_lock+0x2e) [0xb649196e]
#2 /usr/lib/libX11.so.6 [0xb6af0619]
#3 /usr/lib/libXrender.so.1(XRenderFreePicture+0x41) [0xb6ba1f41]
#4 /usr/lib/libQtGui.so.4 [0xb42606ff]
#5 /usr/lib/libQtGui.so.4 [0xb42611bd]
#6 /usr/lib/libQtGui.so.4(_ZN7QPixmap5derefEv+0x5d) [0xb42559ed]
#7 /usr/lib/libQtGui.so.4(_ZN7QPixmapD1Ev+0x30) [0xb4255df0]
#8 /usr/lib/libQtGui.so.4 [0xb4347817]
#9 /usr/lib/libQtGui.so.4(_ZN12QPaintEngineD2Ev+0x2f) [0xb428f53f]
#10 /usr/lib/libQtGui.so.4 [0xb433eeb2]
#11 /usr/lib/libQtGui.so.4 [0xb426065c]
#12 /usr/lib/libQtGui.so.4 [0xb42611bd]
#13 /usr/lib/libQtGui.so.4(_ZN7QPixmap5derefEv+0x5d) [0xb42559ed]
#14 /usr/lib/libQtGui.so.4(_ZN7QPixmapD2Ev+0x30) [0xb4255e50]
#15 /usr/lib/libQtGui.so.4 [0xb425b0fa]
#16 /usr/lib/libQtGui.so.4 [0xb425b76f]
#17 /usr/lib/libQtGui.so.4 [0xb425ad9a]
#18 /lib/tls/i686/cmov/libc.so.6(exit+0x89) [0xb7d82d69]
#19 /usr/lib/libgdk-x11-2.0.so.0 [0xb66a76c7]

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

-- 
firefox dies mentioning RenderBadPicture and a failed assertion
https://bugs.launchpad.net/bugs/279240
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