With the current standard Raring kernel waking up from suspend works again.
till@till-twist:~$ uname -a Linux till-twist 3.8.0-17-generic #27-Ubuntu SMP Sun Apr 7 19:39:35 UTC 2013 x86_64 x86_64 x86_64 GNU/Linux till@till-twist:~$
With the current standard Raring kernel waking up from suspend works again.
till@till-twist:~$ uname -a
Linux till-twist 3.8.0-17-generic #27-Ubuntu SMP Sun Apr 7 19:39:35 UTC 2013 x86_64 x86_64 x86_64 GNU/Linux
till@till-twist:~$