After an update to Kernel 3.2.0-18-generic the problem seems to be gone. Two suspend attempts worked correctly.
(Note: I had trouble with my network connection after the upgrade. I had to disable apparmor's sbin.dhclient rule to fix it.)
After an update to Kernel 3.2.0-18-generic the problem seems to be gone. Two suspend attempts worked correctly.
(Note: I had trouble with my network connection after the upgrade. I had to disable apparmor's sbin.dhclient rule to fix it.)