*** This bug is a duplicate of bug 122389 ***
https://bugs.launchpad.net/bugs/122389
I had the same error as above when running compiz --replace on a
xinerama setup:
The program 'gtk-window-decorator' received an X Window System error.
This probably reflects a bug in the program.
The error was 'RenderBadPicture (invalid Picture parameter)'.
(Details: serial 341 error_code 181 request_code 157 minor_code 8)
(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.)
Segmentation fault (core dumped)
as pdurland say's using twinvieuw instead of xinerama solved the problem.
xinerama seems to be the default way of starting a dual head setup in ubuntu
using the screens and graphics tool (in system-> administration)
but this can be changed (for nvidia cards) when you run sudo nvidia-settings
and in 'x serer dislay configuration' you shoose twinview instead of seperate x
screen and save to x configuration file.
** This bug has been marked a duplicate of bug 122389
gtk-window-decorator crashed with signal 5 in g_logv()
--
desktop-effects and dual-head are incompatible
https://bugs.launchpad.net/bugs/148352
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