I have this old laptop with a half broken screen(hp 8510w). I tried to plug to my tv (LG Flatron M2780D). I used HDMI without any problem, except the tv detected automatically the laptop only once logged in (tried on xp, 7, and ubuntu).
I finally removed the screen to use it only on the tv. But now I can't see anything on tv as I can't log in :S (and also my laptop doesnt seem to start anymore, with a bip after few seconds, and keep beeping, maybe it detects that no screens are plugged so it doesnt want to start ??!!)
I tried then to connect with a normal VGA wire, but same problem.
I also tried to plug the vga to another laptop. Works perfectly, but once again, it displays something on tv only after logging in (using 7).
Does anyone have any tips about what to do ? When I try to replug my screen it just doesnt work anymore ( i might have finshed breaking it !!).
Do you think it comes from the tv that needs to have the os properly started before displaying it or a setting from the laptop ??
Many thanks for your answers !
EDIT : with a lot af luck I guess, I managed to plug in my half broken screen ! So I tried to access the bios to add an external screen to boot on, but couldnt find anything about it. I also noticed that there are two plugs on the screen : one that seems to be the tension (just 2 wires) and another one which is probably all the data. If I dont plug the alimentation, and just data, it boots normally (I can hear to log in sounds from ubuntu, my default boot), and if I plug the alimentation and not the data, it refuses to boot (a bip every 30sec). I've done all these tests with hdmi, vga, and both.
I will try to leave the data plugged to the screen, clean my OSs to leave only one, with an automatic login user, and fingers crossed, hoping that will work !!!