I am experiencing the same behavior on my dv9700. I found disabling the screen saver fixes "the power button trick" I also found that I cannot hibernate or suspend with the power cord unplugged.
-- [Hewlett-Packard HP Pavilion dv9700 Notebook PC] suspend/resume failure [non-free: nvidia] https://bugs.launchpad.net/bugs/354550 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
