Scrolling projector display with ATI video on FC1

[David Keen]

On Thu, 2004-09-23 at 14:28, ehemdal at townisp.com wrote:
> I use my Dell Latitude D600 for presentations and have recently been
> unable to set the projector to anything but 640X480 resolution, regardless
> of how the display resolution is set (1024x768 is the native res on the
> display panel).
> 
> But instead of seeing the entire screen, the projector display acts like a
> viewport.  As I move the mouse around, the picture on the screen moves
> around to display, effectively, "what the pointer is looking at".  The
> effect is dizzying, to say the least, and really unworkable.
> 
> Hardware is ATI Radeon Mobility M9, and all Fedora updates are applied. 
> I'm using the 'radeon' driver according to XF86Config.  The system dual
> boots Windows XP, and the Windows side of the house has no issue (the
> projector pops to 1024x768 and displays the entire screen area).  I've
> seen this happen with three different projectors, so I suspect the issue
> lies with Fedora and not the hardware.
> 
> I've checked the archives, and I've seen references to fixes for a
> projector stuck on 640x480, but none of the posts seem to address the
> viewport behavior, which is really awkward.  I might have misread or
> misunderstood something.  I'd like to get the resolution above 640x480.
> 
> Does anyone know how this can be done?   Thanks.  Erik

I had a similar problem with my LCD display after installing FC2.
My monitor is 1024x768 but it was stuck on 640x480 with the same
viewport weirdness.

I have a Radeon 7000 and am using the radeon driver.

I fixed it by adding MonitorLayout and PanelSize to xorg.conf.

Here is the relevant bit:

Section "Device"
Identifier "Videocard0"
Driver "radeon"
VendorName "Videocard vendor"
BoardName "ATI Radeon 7000"
Option "MonitorLayout" "TMDS"
Option "PanelSize" "1024x768"
EndSection

Of course this is for my main (and only) display.  I'm not too sure what
you need to do to get your projector working right, but this might help.

-- 
David Keen <zen46443 at zen.co.uk>