Lost sliding windows w/ DVI Syncmaster monitor

Paul Rogers paulgrogers at fastmail.fm
Wed Apr 1 19:48:19 UTC 2020

On Wed, Apr 1, 2020, at 11:25 AM, Alex Deucher wrote:
> Panning has nothing to do with the monitor.  It comes down the the
> hardware limitations of the underlying device and what features are

I'm guessing you mean "device" as used in xorg.conf, i.e. the video card?  Obviously the monitor is a device.

> exposed via the driver for that device.  The maximum framebuffer size
> is limited by the stride coordinate limits of the display hardware on
> the device.  The device also needs to be able to dynamically adjust
> the offset of the display frame within the display surface.  When you
> slide pan around with in the larger virtual desktop, the driver is
> changing the offset of the display controller as you move around.  On
> top of the hardware requirements, the X driver also has to expose the
> necessary support for panning.  Not all drivers do.  Especially newer
> drivers which support randr 1.2 or newer.
> Alex

Thank you, I can barely make sense of that.  But I don't see how these internals help me get panning to work again on my system.

Paul Rogers
paulgrogers at fastmail.fm
Rogers' Second Law: "Everything you do communicates."
(I do not personally endorse any additions after this line. TANSTAAFL :-)

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