unable to resume after hibernation

view story

http://www.linuxquestions.org – I am using Debian wheezy AMD64 7.0 and at present I am unable to resume after hibernation. When I issue the command update-initiates -u I am getting the following error failed to detect canonical device of /dev/sda2(swap partition). please help me to resolve this issue like adding an entry to crypttab etc., Please explain the process in detail because I am new to Linux. Regards, Rupesh. (HowTos)