And 12.04 bootinstalled 12.04 64 bit on my desktop which has an nVidia 6150SE integrated graphics card.
At first I had low graphics mode messages but eventually I obtained the login screen perhaps after up to three restarts. Now it fails to boot at all.
I tried to get the boot menu by holding the shift key but that does not work.
Is my only option to get a bootable CD?
I upgraded my system using Update Manager and telecharging 12.04 using a satellite link - I think there was a message about compiz during the telechargement.
When I restarted the computer I eventually got a message about low level graphics mode but none of the options except the default appeared to work. I think the default is to continue in low grahics mode. Eventually I got the login screen and changed the graphics driver to nvidia-current-updates. - this did not improve things so I tried the other option which I think is 173 with updates - this did not improve things either but I eventually, usually after one or more restarts, managed to get into the system and everything worked ok. I never managed to spot why it suddenly worked. I applied at least two updates using Update Manager. On monday when I started the computer it executed the bios then read the hard disk for less than one second and then hung with a message "input not supported" on the screen. The only input that works is ctrl+alt+del. Ctrl+alt+t does not give a terminal screen presumably because unix is not active.