I have had a similar problem and determined the problem due to the USB driver. Please see Bug #128322.
try as root: rmmod ohci_hcd to see if the machine then enters suspend. It may not recover from suspend if using the nv video driver from another bug I'm just about to file. -- suspend to ram 2.6.22-8 https://bugs.launchpad.net/bugs/126214 You received this bug notification because you are a member of Ubuntu Bugs, which is the bug contact for Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs