I've discovered what the problem was: the ati video drivers. Using vesa drivers instead the suspension works
-- Hibernation and Suspend doesn't work on acer aspire 1603 LM https://bugs.launchpad.net/bugs/39564 You received this bug notification because you are a member of Ubuntu Bugs, which is a direct subscriber. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
