Configure Display: Orientation: greyed out

Shaun Jackman sjackman at gmail.com
Sat May 7 19:26:05 BST 2005


On 5/6/05, James Richard Tyrer <tyrerj at acm.org> wrote:
> Shaun Jackman wrote:
> > All the options of the "Orientation (degrees clockwise)" setting of
> > the "Configure Display" dialog are greyed out except for "Normal". I
> > have a landscape/portrait display and would like to set it to "Left
> > (90 degrees)". Where can I start troubleshooting to find out why these
> > options are greyed out?
> 
> If you have an actual landscape/portrait display, this option isn't
> going to do it.  A monitor that allows you to rotate the screen in the
> stand is not really a landscape/portrait display.

OK. I was talking about the latter.

> IAC, it is not your display that you configure, it is your video card
> that needs to be configured.  I suspect that the ability to use the
> simulated portrait display mode (Vertical raster scanning) is dependent
> on which video card driver you are using.  And in the unlikely event
> that you actually have true portrait display, you would require a video
> card that would support it.

It seems to me that it's only the X server that needs to change where
it puts its pixels. From the video card's point of view, it's still
displaying a simple picture of 1600x1200 pixels.
 
> To trouble shoot, you should check to see that you have the Randr
> extension enabled.
> 
>         xdpyinfo | grep RANDR

$ xdpyinfo | grep RANDR
    RANDR

Cheers,
Shaun
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