Additional information from ongoing testing: If I suspend/resume off the docking station, it *appears* to always work correctly. If I suspend/resume on the docking station, again, it *appears* to always work correctly. If I suspend on the docking station, remove my thinkpad from the docking station, and then resume, *BLAM* ... it *appears* to hang *every* time.
So, as my docking station contains a SATA DVD writer, I think my suspend/resume problem (part (a)) might be a manifestation of kernel bug 62801, see http://bit.ly/1ccXSYv. This is a deadlock problem introduced by a change in kernel 3.10. As far as I can tell (I'm no expert!), there is no official fix yet. However, this still doesn't explain the failure to start the graphical subsystem on some subsequent reboots after this hang. It also doesn't explain the other failure mode (part (b)) where I have been seeing the system apparently power-off during suspend. I now believe that this only happens *sometimes* when I suspend off the docking station, dock the thinkpad while suspended, and then leave the thinkpad suspended on the docking station for some time (typically overnight). Re request to test with the latest development release, yes, now I have a guaranteed way to recreate, I can do that for you. I will test that and report the results (probably tomorrow) before (I suspect) moving onto testing the upstream kernel. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1268113 Title: [LENOVO ThinkPad X201] suspend/resume failure To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1268113/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
