When unplugging the AC the system directly suspends. Changing the lid close operation to black screen is the workaround i use. This is on LG S1 Express Dual after a fresh Karmic install.
-- Computer suspends immediately after resuming if power is unplugged while suspended https://bugs.launchpad.net/bugs/425411 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