(gnome-font-viewer:30277): Gdk-ERROR **: The program 'gnome-font-viewer' received an X Window System error.
This probably reflects a bug in the program.
The error was 'BadShmSeg (invalid shared segment parameter)'.
(Details: serial 1517 error_code 128 request_code 130 (MIT-SHM) minor_code 5)
(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 GDK_SYNCHRONIZE environment
variable to change this behavior. You can then get a meaningful
backtrace from your debugger if you break on the gdk_x_error() function.)
Trace/breakpoint trap (core dumped)
I have this same issue. I launched gnome-font-viewer from the terminal and got this output:
$ gnome-font-viewer Desktop/ FantasqueSansMo no-RegItalic. otf
(gnome- font-viewer: 30277): Gdk-ERROR **: The program 'gnome-font-viewer' received an X Window System error.
This probably reflects a bug in the program.
The error was 'BadShmSeg (invalid shared segment parameter)'.
(Details: serial 1517 error_code 128 request_code 130 (MIT-SHM) minor_code 5)
(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 GDK_SYNCHRONIZE environment
variable to change this behavior. You can then get a meaningful
backtrace from your debugger if you break on the gdk_x_error() function.)
Trace/breakpoint trap (core dumped)