I think it is the video card that is causing you grief. You can install the
server pack of Ubuntu and try to edit the XORG.
Below taken from Ubuntu Wiki
With Feisty Beta (7.04), when you install, you still have the "black screen"
problem. Please update (sudo apt-get update) and it will install a new ati-xorg
driver which will do the trick perfectly, without any other configuration (no
"Option "MonitorLayout" "LVDS, TMDS" is needed no more !)
https://wiki.ubuntu.com/LaptopTestingTeam/AcerAspire5052ANWXMi?highlight=%28acer\
%29