The fix (11n_disable) did not work in the end; the problem is in wpa_supplicant, which must be killed after resume, as #1311257 suggests. That fixed the problem, so I mark this as dupe.
The fix (11n_disable) did not work in the end; the problem is in wpa_supplicant, which must be killed after resume, as #1311257 suggests. That fixed the problem, so I mark this as dupe.