I buy acer aspire 4250 yesterday. It has ATI Radeon 6320 graphics card. I installed latest graphics driver from ati site. Graphics and other facilities are just working nice. Problem is it does not wake up from sleep. After suspend screen goes black. Power led is on but screen is black. How to debug or solve this problem.
Thanks in advance.
Note: I see same named post in askubuntu but no is related to my problem. So i create a new post. Sorry for that