Lid Hibernate not working
My laptop is a Dell Inspiron 510m. I can hibernate and resume OK with the hibernate option, but I cannot hibernate by closing my laptop lid. It just locks/crashes on a black screen and I have to do a forced shutdown. I've checked the settings in Power Management. One other thing I have tried is unloading my display driver i915 before hibernating by adding the instruction to acpi-support, but this doesn't work, I think the system won't allow that module to be unloaded as I've checked it with modprobe -r in the terminal and it says 'Fatal cant be unloaded in use'. Any suggestions?