hi friends
i m new in linux, i have ubuntu 12.04 64 bit,when i connect galaxy ace plus to pc [network maneger]--mobile broadband, its work fine ,after 30 min its closed atomaticaly.and no "ICON"
ON NETWORK MANEGER. BUT[ wired network worked fine working] i tired about it , and try to restart pc ....its work fine.....[ only 30/40 min.]

galaxy ace plus- gaple rom