internal monitor name in xrandr

Maarten Maathuis madman2003 at
Fri Jul 2 03:22:57 PDT 2010

On Fri, Jul 2, 2010 at 12:19 PM, CSJ <changsijay at> wrote:
> Hi,
> I am writing a script to output to external monitor automatically when it is
> connected.
> But now I have no idea about what name will be used for internal monitor in
> xrandr.
> some are "LVDS" and some are "DP1"

In recent versions of xrandr/xorg/etc there exists the concept of a
primary output, maybe that is what you seek.

> I want to parsing the xrandr output and remove the internal one. (xrandr |
> grep -v " connected" | grep -v $INTERNAL_NAME)
> then others will be external monitor.
> So, does any methods to does which name will be used for internal monitor.
> in many kinds of notebooks?
> One more question,
> I've tried meego live USB, it can auto output when I plug a external
> monitor,
> How does it achieve this function?
> Does any event will be issued when I plug a external monitor?
> Thanks
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