Re: Re: Laptop + VGA + X

[<tomas@tuxteam.de>]

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On Wed, Dec 30, 2015 at 10:05:22AM -0200, Hudson Flavio Meneses Lacerda wrote:
> Joel Roth wrote:
> >Hudson Flavio Meneses Lacerda wrote:
> >>Hi.
> >>
> >>The monitor of my laptop is broken, thus the screen frequently becomes
> >>white. Then, it is needed to turning off the energy and restart the laptop
> >>(not always with success).
> >>
> >>Therefore, I plugged a VGA monitor. However, the VGA monitor does not work
> >>when X is active. (It works very fine with framebuffer, though.)
> >>
> >>How to enable Xorg to use a VGA monitor plugged to a laptop?
> >
> >I use a command like this:
> >
> >xrandr --output LVDS1 --auto --output VGA1 --auto
> 
> Hi Joel.
> 
> I just tried your suggestion, but got this message:
> 
> hudson@musix:tmp$ xrandr --output LVDS1 --auto --output VGA1 --auto
> warning: output LVDS1 not found; ignoring
> warning: output VGA1 not found; ignoring
> hudson@musix:tmp$

Ah -- LVDS1 is just one of the possible names for the laptop's display.
To find out how yours are called (and what resolutions they report as
available), just try (best with second monitor attached, so you can
get a complete list):

  xrandr

(My laptop's internal monitor, for example, is called just "LVDS", not
"LVDS1").

HTH
- -- tomás
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