[Gllug] xorg.conf for widescren lcd tv

Ryland, Peter peter.ryland at squaregain.co.uk
Tue Jul 4 14:56:25 UTC 2006

On Tue, 2006-07-04 at 13:35 +0100, Minty wrote:
> Anyone had any success getting a widescreen signal via VGA to a
> widescreen lcd tv?
> Sony Vaio, Kubuntu Breezy.  It's only video out is VGA.
> Sony Widescreen lcd tv, with a VGA input (also s-video, HDMI and scart)
> Both support the same 1366 x 768 resolution - the laptop has a
> widescreen display, and runs happily at that resolution out of the box
> with Kubuntu.
> Trying to use the TV as a second screen under xorg.conf.
> At 800x600 (or any other sane 4:3 resolution), the TV is happy to
> become a working 2nd screen [1].  But you then have to make the TV
> stretch a 4:3 picture into a 16:9 format.  Which sucks.
> At any widescreen resolution the TV gets the signal, but the picture
> is totally un-watchable.  Hard to describe, but like it's trying to
> fit a 1366 pixel wide line into 800 pixels, and thus 566 are wrapping
> onto the next line.  Or the other way around.
> Any ideas?

The problem is probably that X can't get EDID info from your TV so it
doesn't know what aspect ratio the display is.

One solution is to specify this in your application software, for
example mplayer has a -monitoraspect flag (strangely, 14:9 seems to work
best for my TV).


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