@Ronan, ok, can you try to evaluate the debugging steps at https://wiki.ubuntu.com/Kernel/Reference/S3SystemTapDebug ? It requires a bit more of work, but should help isolate this issue. I expect you will need to run locatehang, after reboot from the failed resume. Feel free to join on #ubuntu-kernel on Freenode, asking for directions or if you have doubts etc.
@Ronan, ok, can you try to evaluate the debugging steps at https:/ /wiki.ubuntu. com/Kernel/ Reference/ S3SystemTapDebu g ? It requires a bit more of work, but should help isolate this issue. I expect you will need to run locatehang, after reboot from the failed resume. Feel free to join on #ubuntu-kernel on Freenode, asking for directions or if you have doubts etc.