http://bugs.winehq.org/show_bug.cgi?id=17275
--- Comment #11 from Henri Verbeet hverbeet@gmail.com 2010-05-27 14:38:09 --- (In reply to comment #10)
While perhaps we could add a dummy videoprt.sys but likely it won't help much. The direcpll dll is responsible for retrieving gpu information like gpu clocks, amount of video memory and other information. In order to obtain this information it uses a kernel module roughly to access GPU registers through memory mapped I/O. For a part it uses the entech.sys module for this and videoprt.sys appears to be some generic interface which can at least poke with some legacy vga / vesa registers, interrupts and other lowlevel things. It is really about stepping on the toes of drm drivers and xorg drivers.
I wouldn't be surprised if the real regression between 1.0 and now is because ntoskrnl has been improved a lot.
Maybe you should consider reading the bug report before replying to it :-\ Supposedly this is a D3D regression. As for the actual exception, 0xc0000092 is a floating point exception. e6611e22fb037a879205f1330d1a3485f9f18705 may have some effect on that, so it makes sense to retest this with current git.