I am using two monitors. The main resolution is 1920x1080 and the secondary is 1440x900. Everything seems to work fine (with default drivers - fglrx crashes badly), besides windows opening in the wrong monitor (even when the main is set correctly), but now what I am trying to fix is the wallpaper problem.

[![the problem with the wallpaper](https://i.imgur.com/msLRRl.jpg)](https://i.imgur.com/msLRR.jpg)

Click on the image to see a full resolution version

It also happens with gradients. The secondary monitor is physically aligned like in the image, lower than the other, the wallpaper on the main screen seems to keep the size of the lower resolution, and then it starts at the correct resolution the last part at right.

Is there any way to fix this?

I am using Ubuntu 12.04 with Gnome-Shell 3.4.1. The VGA is a Radeon HD 6950.

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**UPDATE**

I went to gnome-tweak-tool and disabled *Have file manager handle the desktop*, and now it looks ok on both monitors, but I can't have icons on my desktop, so I am still interested in solving it.

**UPDATE2**

Disabling *Have file manager handle the desktop*, in gnome-tweak-tool and then re-enabling it seems to work, but has to be done every time you turn on the PC.