http://bugs.winehq.org/show_bug.cgi?id=11873
--- Comment #7 from Dmitry Timoshkov dmitry@codeweavers.com 2008-03-14 10:53:40 --- (In reply to comment #6)
Additional I noticed monitor's power diode turn from blue (on) to orange (sleep) and back at these moments..
That's an indication that this is caused by a (most likely buggy) video driver. In that case there is nothing we can do about it.