I have similar hardware and same problem. If "System/Preferences/Power management/When button is pressed" is set to "Ask me" then the said dialog is blinking after resume. If I set this preference to "hibernate" then system hibernates immediately right after it resumed so I can not do anything.
It seems that power button press event is somehow saved in hibernated image and is processed only after system is restored. (During hibernate and resume after 3 messages about my bluetooth device I see one about processing of some "soft IRQ" - that may be related to power button event) -- hald-addon-input causes flashing shutdown dialog in gnome after resume https://bugs.launchpad.net/bugs/406704 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