Dual monitor set-up problem

[jk7800]

Hi.

I have two monitors, one on the left has resolution of 1440x900, the one on the right has 1680x1050. Whenever I run an app on the smaller monitor, it runs fine. But when the window is on the second screen, it stops refreshing. I get black boxes, graphical glitches and clicking inside the window does nothing. Now here's the weird part: only the part of the window, that is positioned further than x=1680 from the start of my dual monitor set-up stops refreshing. So there is a barrier at 240 pixels into my second screen after which windows' contents just stop getting drawn.
Is there a manual setting of screen resolution in wine that can be modified (so I can input 3120x1050)? At the moment I'm forced to run apps inside a virtual screen, but it's really annoying.

[dimesio]

Possibly related to this bug: https://bugs.winehq.org/show_bug.cgi?id=33743.

[jk7800]

Hmm. I don't think it is. The person in the bug report says, that the maximum size is limited by the smaller monitor. Also he claims to be able to stretch the window and have it working correctly. I have problems with all windows, regardless if it's fullscreen or not. It's got to be something with the winex11drv. I see that:
System\CurrentControlSet\Control\Video\{14c1f9d3-6d2b-4188-adfe-75f10e2e72d0}\0000\DefaultSettings.XResolution = 1680
which is suspiciously identical to the limit in window width I've encountered.
However I cannot change it. Each time I change, I get a new key with the default value. It seems that the driver gets the resolution of the primary monitor and restricts the size of windows visible area of windows to this value.

I'm using wine-1.9.2-1 on Arch Linux with KDE.