Please describe the problem:
when using multiple monitor devices with my laptop (intel graphics), the backgroung image is not properly set, it is too big (zoom mode) or centered between the screens (scale mode/center mode).

Steps to reproduce:
1. use the intel modesetting driver (?)
2. use randr >1.2
3. set the computer to dual screen on the fly (the tool urandr can help you do it easily)


Actual results:
the background is way overstretched

Expected results:
size the background to fit correctly each screen, or, if that is not possible (doubt that), calculate based only on the screen with the highest resolution

Does this happen every time?
yes

Other information:
my guess of the problem: the background capplet does not take into account different physical devices: it thinks that 1280x1024+1280x800 = 2560x1824 and sizes its image based on that number