https://bugs.winehq.org/show_bug.cgi?id=39636
--- Comment #3 from n8bk n8bk13@gmail.com --- Unfortunately I couldn't manage to run client 1.8 with a right server (despite setting WINESERVER variable pointing to a server in version 1.8), so I can't definitely confirm this, but looking at the built user32.dll.so library and at the full code of Wine 1.8-rc1 I didn't find such symbol as DisplayConfigGetDeviceInfo (and some other functions introduced in Vista and 7), so I suppose the bug still exists.
If I finally find out why Wine 1.8 client always tries to launch older version of the server existing in the system, then I will be able to check if the bug is really still there.