Display resolution issue on 12.04 with external display on laptop

[Chris Green]

On Mon, May 28, 2012 at 05:22:28PM +0100, Liam Proven wrote:
> On 28 May 2012 11:50, Chris Green <cl at isbd.net> wrote:
> > We have just upgraded my wife's Dell Vostro v13 laptop from
> > 10.04 to 12.04, it all works OK except that it doesn't work so well with
> > an external monitor as it used to.
> >
> > What happens now when an external monitor is plugged in is that the
> > laptop screen runs at 1366x768 (as it should) but the external VGA
> > screen runs at 1024x768 and only shows the LH portion of the full
> > 1366x768 screen.
> >
> > It used to work fine on 10.04, when the external monitor was plugged in
> > the internal screen was disable and the external one ran at its native
> > resolution 1680 x 1050.  Now what happens is that the internal screen
> > contnues to run at 1366x768 and the external one runs at 1024x768 and
> > shows only the LH portion of the full screen.
> >
> >
> > Any ideas for a workaround/fix to get the external monitor right?
> 
> What settings do you have in the Displays control panel?
> 
Sorry, I'm running xubuntu so maybe shouldn't be asking here.

However you have taken me some way to a solution as I can now *manually*
select the right resolution needed.  It used to 'just work' all by
itself though.

Thanks.

-- 
Chris Green