[Bug 33395] New: Flashing and Glitching on osu! on Xubuntu 13.04

http://bugs.winehq.org/show_bug.cgi?id=33395

Bug #: 33395
           Summary: Flashing and Glitching on osu! on Xubuntu 13.04
           Product: Wine
           Version: 1.5.28
          Platform: x86-64
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: major
          Priority: P2
         Component: -unknown
        AssignedTo: [e-mail]
        ReportedBy: [e-mail]
    Classification: Unclassified

Created attachment 44189
  --> http://bugs.winehq.org/attachment.cgi?id=44189
Wine log from game startup, song select and play (Auto) and exit

While trying to play osu!, the screen will flash completely white for a few ms
every 4-5 seconds and then return to normal. This is "very" distracting, and
may even be a rather large issue for people with epilepsy.
> From my experience, this seems to only occur on Xubuntu 13.04. Xubuntu 12.10

doesn't have this issue from what I've noticed. Same driver version as well.

I'm using a Radeon HD 7850 and fglrx (12.100; 13.3 Beta 3).

Uploaded is an attached wine.log, not sure if it'll help too much or not
though.