I don't know if this is of any help, but I seem to recall running DOS on an old Dell laptop and pressing a key combination, (Fn and F8 possibly, but I wouldn't put money on it) to switch to the external monitor. Being a HP, the key would be different, (maybe F2) but it's got to be worth a try...
Hope this helps. John. On Wed, 9 Oct 2024 at 15:14, Daniel Doran via Freedos-user < freedos-user@lists.sourceforge.net> wrote: > Probably won’t help but make sure the laptop is off, the power > supply/charger is connected to the laptop and is plugged into to the power > outlet. Also make sure the external monitor is plugged into the laptop’s > VGA port and the monitor is on. > > Now leaving THE LAPTOP SCREEN AND THE MONITOR PLUGGED IN AND ON boot the > laptop. > > If that doesn’t work check out the keyboard F keys and see if there is a > key or key combination to change the video output source, some laptops have > the ability to use a key combination to to turn the external monitor off/on. > > Best of luck > > On Wed 9 Oct 2024 at 14:23, Gabriel González via Freedos-user < > freedos-user@lists.sourceforge.net> wrote: > >> Hi Franco. Yes, I can turn on the computer with the laptop lid closed and >> the vga conected to the screen, but I have the same problem. >> >> Thank you for your answer. Really the laptop screen is too small and this >> is unconfortable. >> >> El mié, 9 oct 2024 2:07 p. m., Frantisek Rysanek via Freedos-user < >> freedos-user@lists.sourceforge.net> escribió: >> >>> > Even I closed the laptop waiting it will recognize the external VGA. >>> > But nothing happened. >>> > >>> You have pretty much described the root of the problem. >>> The routing of video outputs is nowadays a function of the OS / >>> assisted by software running in the OS. Be it the Windows desktop >>> management, or the Linux X-server and some GUI configuration applet >>> on top. >>> >>> There is one thing I can suggest: >>> Cold-start the machine with VGA already attached. >>> The magic can happen during VGA option ROM initialization. >>> If the VGA option ROM notices the VGA port loaded (= signal sink >>> attached), chances are that it will enable the output. And, it can >>> either mirror the internal LVDS video port, or it can send output to >>> the VGA *only* - I would expect that to happen if the notebook gets >>> started with the lid closed, not sure if you can achieve that. >>> If you have a start button under the lid (on the keyboard or such), >>> how much time do you have between pressing the button and getting a >>> POST beep / VGA on? Perhaps you could make it by closing the lid >>> swiftly enough... >>> >>> Frank >>> >>> >>> _______________________________________________ >>> Freedos-user mailing list >>> Freedos-user@lists.sourceforge.net >>> https://lists.sourceforge.net/lists/listinfo/freedos-user >>> >> _______________________________________________ >> Freedos-user mailing list >> Freedos-user@lists.sourceforge.net >> https://lists.sourceforge.net/lists/listinfo/freedos-user >> > _______________________________________________ > Freedos-user mailing list > Freedos-user@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/freedos-user >
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