It looks like the people in https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1094800 have just identified the specific patches that broke the suspend. From the text descriptions of those patches, which specifically address suspend to RAM issues, it seems to me highly likely that the problem area is identified.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1088721 Title: [Toshiba Portege Z935-P390] Fn key and suspend resume failure after first suspend To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1088721/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
