I am trying to install Ubuntu on a Dell Inspiron 1545 which is using an external monitor (LCD is broken). The external monitor is an AOC e950Swn and the LCD is complety unpluged from the MOBO, if that matters.
I have and old (3 months) installation in a HDD, and the GRUB shows up, but when I select Ubuntu to boot the screen goes off saying there is no signal.
I've tryed installing from a USB. When booting I press F2 so it takes me to the advanced menu. There I have chosen "nomodeset" but all I see are some error messages related to the wireless card and then the screen goes off.If booted without "nomodeset" I can't even see the error messages.
Also tried installing on another laptop and passing the HDD, but still doesn't work. If I log in recovery mode and try safe graphics mode all I get is a blinking console cursor. But if I log into a root console everything is there.
My assumptions is that it tries to turn on the laptop's LCD even if it isn't present, completely ignoring the external monitor.
So, how can I tell it (or force it) to load the external monitor from startup? or even when installing.