The problem lies in the TPM kernel module Here's a discussion, workaround solution as well as a patch: http://us.generation-nt.com/answer/regression-suspend-fails-because-tpm-modules-help-201235252.html
The permanent workaround on ubuntu is (as root) # echo "options tpm_tis itpm=1" > /etc/modprobe.d/tpm-tis.conf ** Summary changed: - [natty] Suspend fails on thinkpad x301 after upgrade from maverick + [natty] Suspend fails on thinkpad x301 after upgrade from maverick [SOLVED - Workaround] -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/701470 Title: [natty] Suspend fails on thinkpad x301 after upgrade from maverick [SOLVED - Workaround] -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
