http://bugs.winehq.org/show_bug.cgi?id=10499
Summary: ChangeDisplaySettings is not friendly with Xinerama hints Product: Wine Version: 0.9.49. Platform: PC-x86-64 OS/Version: Linux Status: UNCONFIRMED Severity: minor Priority: P2 Component: wine-x11driver AssignedTo: wine-bugs@winehq.org ReportedBy: kassah@gmail.com
When you have two screens with 1680x1050:24 each side by side, you call ChangeSettings() with a settings of 1680x1050:24 it will try to use Xrandr to change the size of the entire display (and fail). Windows will change the primary display of a multi-head configuration to match the settings of the request, or if it already matches, leave it alone (which in my case it generally does).