I check it again and an interesting thing happened.

When I changed ctrl+F1, external monitor was working, i mean it is only work with terminal. if i turn back to Gnome external monitor is not working.

the links above have not helped me actually and i am really fed up with that problem because i cannot make my presentations in my ubuntu.

yes this a laptop, and VGA output is already enabled.

Hi guys,

I have a problem about the motherboard i guess.

I cannot use some of hotkeys, also, any of external monitors and projections are not recognized by my ubuntu.

I couldnt fix that problem even i search google. Any suggestion or experience about such that problem ?

I tried acpi-supoort package but nothing fixed.

thanks.