I am new to Ubuntu. After updating 12.04, HUD background changed to black instead of transparent and can't use Wine and ccc anymore.
Then I tried GNOME but only the wallpaper appeared and can't do anything. I am using ASUS ATI Radeon 3450/512MB graphic card. Before updating Ubuntu, I installed ATI driver from amd.com.
Could it be the graphic card driver problem? Any help?