The same thing happens on my Lenovo T61. Observations and experiments showed that suspend works before I log in to the system, from that point suspend doesn't work and it hangs the way described above.
Installed BETA and keeping up to date system through available updates... Ubuntu 9.10, kernel 2.6.31-14-generic -- Karmic RC fails to suspend (freezes) on Thinkpad X61s https://bugs.launchpad.net/bugs/462722 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
