@@ -592,7 +592,7 @@ ETEXI
DEF("display", HAS_ARG, QEMU_OPTION_display,
"-display sdl[,frame=on|off][,alt_grab=on|off][,ctrl_grab=on|off]\n"
- " [,window_close=on|off]|curses\n"
+ " [,window_close=on|off]|curses|none\n"
" select display type\n", QEMU_ARCH_ALL)
STEXI
@item -display @var{type}
@@ -609,6 +609,12 @@ support a text mode, QEMU can display this output using a
curses/ncurses interface. Nothing is displayed when the graphics
device is in graphical mode or if the graphics device does not support
a text mode. Generally only the VGA device models support text mode.
+@item none
+Do not display video output. The guest will still see an emulated
+graphics card, but its output will not be displayed to the QEMU
+user. This option differs from the -nographic option in that it
+only affects what is done with video output; -nographic also changes
+the destination of the serial and parallel port data.
@end table
ETEXI
@@ -110,6 +110,7 @@ typedef enum DisplayType
DT_CURSES,
DT_SDL,
DT_NOGRAPHIC,
+ DT_NONE,
} DisplayType;
extern int autostart;
@@ -1617,6 +1617,8 @@ static DisplayType select_display(const char *p)
fprintf(stderr, "Curses support is disabled\n");
exit(1);
#endif
+ } else if (strstart(p, "none", &opts)) {
+ display = DT_NONE;
} else {
invalid_display:
fprintf(stderr, "Unknown display type: %s\n", p);