[Bug 5916] New: explorer.exe consumes almost all of CPU when running Tribes 1 in fullscreen mode

[Wine Bugs]

http://bugs.winehq.org/show_bug.cgi?id=5916

Summary: explorer.exe consumes almost all of CPU when running
                    Tribes 1 in fullscreen mode
           Product: Wine
           Version: 0.9.18.
          Platform: PC
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: wine-programs
        AssignedTo: [e-mail]
        ReportedBy: [e-mail]

When running the free download version of Starsiege Tribes (the original) in
fullscreen mode (1600x1200 LCD monitor) explorer.exe seems to consume almost all
available resources - the program is unresponsive if started in fullscreen mode,
and when it is started in smaller size (which does work) and switched to
fullscreen, the mouse is almost completely unresponsive - it takes many seconds
to process a movement.  When explorer.exe is killed from a non-graphical
terminal after Tribes is started (Ctrl-Alt-F1), Tribes then proceeds to run
normally.  Tribes can be successfully run in non-fullscreen without killing
explorer.exe, although it is not clear if this is due to the less resource
intensive nature of the drawing need for the smaller screen or a different
explorer.exe behavior in non-fullscreen interaction.

This is true in both 0.9.18 and 0.9.19.  In 0.9.19 the following error messages
are observed on the console when running Tribes - no idea if they have any
relevance to this problem:

fixme:keyboard:X11DRV_GetKeyNameText (00000000,0x33cc78,256): unsupported key,
vkey=0000, ansi=0000  (this one appears quite often)

These two only seem to appear once:
fixme:d3d:IWineD3DDeviceImpl_GetAvailableTextureMem (0x169b98) : stub,
simulating 64MB for now, returning 64MB left
fixme:win:WIN_CreateWindowEx Parent is HWND_MESSAGE

fixme:dsound:DSOUND_MixOne problem with underrun detection (mixlen=1568 <
primary_done=58288) (this one also is quite common)

There is a longer error message on exit which I will post as an attachment.