If your trusty Lenovo T0 does not want to suspend/hibernate under Ubuntu 10.10, but just seems to do it and then comes back right away, blacklist a bunch of modules editing
# suggested blacklist to fix lenovo suspend failure. lambertdw
rmmod them for testing purposes (thanks to lambertdw). Offending module for me was
tpm_tis, which handles the Trusted Platform Module. I don’t need it anyway. Supposedly this should be fixed in kernels >= 2.6.36.