flicker-free suspend/resume on Intel

Well if you look in kernel/power/suspend.c, in suspend_prepare(), you can see an unconditional call to pm_prepare_console(), and in kernel/power/console.c pm_prepare_console() always calls vt_move_to_console(SUSPEND_CONSOLE, 1), where
#define SUSPEND_CONSOLE (MAX_NR_CONSOLES-1)

This will always switch console unless disable_vt_switch is set, and that only gets set by a call to pm_set_vt_switch(0).

This is only called by drivers/video/geode/gxfb_core.c and drivers/video/geode/gxfb_core.c, which defaults it to 0 unless it is set by a module parameter:

module_param(vt_switch, int, 0);
MODULE_PARM_DESC(vt_switch, "enable VT switch during suspend/resume");

So it looks like, with 3.9-rc1, you always get a vt switch at suspend/resume unless you have a GEODE video controller.

(note to self: I really should use that pm_set_vt_switch() call for my omap3 display on the GTA04 instead of commenting out the call to pm_prepare_console())