I know waking from suspend is an issue, but this looks like a separate bug.
When I suspend 13.10 on HP Pavillion dv6 (AMD 6770M/fglrx 13.10.10) from x, it suspends normally but freezes when waking. I get a black screen with a frozen cursor.
But when I suspend from console with sudo pm-suspend, it wakes normally, and I can then get back my x with Ctrl+Alt+F7.
If I suspend by closing lid under x, also freezes when waking up. If I suspend by closing lid under console, it wakes up into the x (?) login, then into a clean session.
UPDATE. I checked my syslog, kern.log and pm-suspend.log, they appear to show a standard suspend procedure which is completed normally, then followed by many blank lines (000s), then normal start procedure after hard reset. I may be wrong but looks like kernel panic to me.
Also, if I suspend with dbus (How can I suspend/hibernate from command line?) instead of pm-suspend, outcome is same.