Comment 9 for bug 14911

User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.7.10) Gecko/20050724 Firefox/1.0.6
Build Identifier: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.7.10) Gecko/20050724 Firefox/1.0.6

If you display a webpage with a flash animation in it (for example
http://www.stadtplandienst.de) Firefox will crash.

This crash only appears when the following things are true:
XServer uses the composite extension und has the color-depth set to 16 bit.
If the composite extension is switched off or the color-depth is set to 24 bit,
the problem doesn´t occour.

If the flash-plugin itself is renamed or deleted, everything works only the
flash is not shown any more ("Click here to download the plugin").

Reproducible: Always

Steps to Reproduce:
1. Set x-server to use the composite extension and set the color depth to 16 bit
2. Start firefox, goto a webpage with flash e.g. www.stadtplandienst.de
3. Crash
Actual Results:
In the console, the following message is shown and the programm will die with
all remaining processes.

Errormessage:
The program 'Gecko' received an X Window System error.
This probably reflects a bug in the program.
The error was 'BadMatch (invalid parameter attributes)'.
  (Details: serial 164 error_code 8 request_code 147 minor_code 3)
  (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.)
firefox-bin exited with non-zero status (1)

Expected Results:
Not crash und show flash correct