https://bugs.winehq.org/show_bug.cgi?id=49800
--- Comment #9 from Zhiyi Zhang zzhang@codeweavers.com --- (In reply to Brian Gerst from comment #8)
With this patch and c5ec1585 reverted, switching monitors does work. So the patch is good, it just fixes a different problem. Should I file a separate bug for it?
No need. It's already known that wine currently only supprts one display output for wined3d.
Unfortunately, this means that there still is an issue with the new WM state handling vs. the MATE window manager.
Probably there are some window manager specific bugs need to be resolved. Do it work on other WMs?