Just installed Mint and Ubuntu won't boot. It hangs after "Checking battery"; also, I can drop to shell with Alt+F2 and access the system from the command line. What might be the problem?
are both of you operation system have same cpu architecture ? I mean are both of them 32 bit or 64 bit ? if one of them is 64 and the other is 32 you will get problem in loading . and based on my experience ubuntu 64 has a problem in loading page on some laptops it got stuck and won't do anything until you force it to shutdown and start your laptop without battery , try on plugged in mode with out battery . I have had the same problem with ubuntu and windows . let me know if it worked or not .
According to this source you can try killing X from the command line
killall X. It will then restart, and you will have the login screen...
But I don't see what are the real causes of your problem...
Just enter this in the terminal. I had the same problem.