This doesn't happen to me (using Flight 6 on MSI S250 laptop). I tested this by locking the screen and suspending the machine with sleep button. Also hibernated it via lid close. Both times when I resumed the session the lock screen came right back. Power button did not have any action here.
I have a related problem though: It is set in the /etc/default/acpi-support that the machine should automatically lock the screen on resume: # Comment this out to disable screen locking on resume LOCK_SCREEN=true However this does not happen. Why? -- Pressing power button unlocks locked screensaver https://launchpad.net/malone/bugs/37350 -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs