balajipg

Hi all, I have been trying to install linux on ACER Travelmate 3210 laptop which has ATI mobility radeon X700 graphics card in it. i have tried ubuntu, madrake limited edition 2005, fedora core linux... every time after installation when i reboot the Xserver fails to start up and it says no monitor detected and goes in comand mode...Please help me fix this problem...i have been struggling with this as i am extremely new to Linux and desperatley need it for my research work.