I am seeing this same problem on my X60s. See #63068. The crash report may or may not be relevant there though but the log should be.
** Bug 63068 has been marked a duplicate of this bug -- X crashes on second resume from suspend-to-ram on Thinkpad X41 https://launchpad.net/bugs/56365 -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
