I had the same problem on my X200s: Manufacturer: LENOVO Product Name: 74705HG Version: ThinkPad X200s
The test kernel fixes the problem for me: Linux lure 2.6.35-26-generic #45~lp705845v201101271403 SMP Thu Jan 27 14:17:52 UTC 2011 x86_64 GNU/Linux Before this test kernel, I have used the following workaround: http://us.generation-nt.com/answer/regression-suspend-fails-because-tpm-modules-help-201235252.html Also note, that similar problem was fixed in RedHat kernel (with similar auto-detection fix) already in Nov 2010: https://bugzilla.redhat.com/show_bug.cgi?id=644842 ** Bug watch added: Red Hat Bugzilla #644842 https://bugzilla.redhat.com/show_bug.cgi?id=644842 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/705845 Title: Suspend on Thinkpad X200s worked in 2.6.35-24-generic but no longer in 2.6.35-25-generic -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs