[ubuntu] Ubuntu 9.10 Suspend problem

view story

http://ubuntuforums.org – Hi, I'm using Ubuntu 9.10 64bit, my laptop is HP DV4-1125nr. When I press suspend button the display goes black and nothing happens, when I move mouse the login screen appears, when I type in the password everything is like before, all applications are opened like before. Hibernation works fine, the problem is only with suspending. looking forward for tips. (Hardware)