having Virtual be smaller than Mode size?

[Alex Deucher]

On 2/5/06, Nicolas Mailhot <nicolas.mailhot at laposte.net> wrote:
> Le dimanche 05 février 2006 à 19:36 +0100, Luc Verhaegen. a écrit :
> > On Sun, Feb 05, 2006 at 07:20:51PM +0100, Nicolas Mailhot wrote:
> > > Le jeudi 26 janvier 2006 à 20:47 +0100, Luc Verhaegen a écrit :
> > > > This does require a driver capable of doing proper modesetting though.
> > >
> > > This does not work with my dvi-connected lcd. It will scale to full
> > > screen regardless of the blanking tricks I tried. It seems the black bar
> > > thing (widescreen film on 4/3 screen or the reverse) can only be
> > > achieved by X drawing the bars itself (ie present the full screen
> > > resolution to the screen, only a part of it to the apps, and fill the
> > > rest in black)
> > >
> > > This would allow all sorts of cloning strategies between screens that
> > > have different aspect ratios BTW
>
> > You've copied over the relevant bit: It requires a driver that is
> > capable of doing proper modes.
> >
> > Please detail what driver you're using.
>
> Radeon driver
>

The radeon driver doesn't currently respect user supplied modelines
for DVI connected outputs.

Alex

> > You might even want to provide
> > a (g/bzipped) log.
>
> Here it is
> I started from a cvt 1232 768 74 --reduced-blanking modeline
> (screen ratio is 16/10, I wanted a 4/3 1024*768 and the 74 is to avoid
> the default 1024*768 at 75 mode stamping on my modeline)
>
> I used xrandr in a term to switch on my new 1024*768 at 74 mode once
> logged, and the result occupied the full screen
>
> Regards,
>
> --
> Nicolas Mailhot
>
>
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>
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