First and Secundary Screen on Primary VGA-Card go black for a sec. while MP running

[flashgordon]

TV-Server Version: -
MediaPortal Version:
MediaPortal Skin:
Windows Version: 0.2.3.0 RC1 SVN Build 15641
CPU Type: DuoCore E6600
HDD: a few ^^
Memory: 3gb 667
Motherboard: Gigabyte DS4 965
Motherboard Chipset: Intel 965
Motherboard Bios: F5
Video Card: Primary GF7900GS, Secundary GF7200GS
Video Card Driver: 6.14.11.6218 (both)
Sound Card: A97
Sound Card AC3: -
Sound Card Driver: Realtek Microsoft HD
1. TV Card: Hauppauge PVR 500 (dual)
1. TV Card Type: Cable
1. TV Card Driver: latest
2. TV Card: Hauppauge PVR 500
2. TV Card Type: Cable
2. TV Card Driver: same
3. TV Card: -
3. TV Card Type: -
3. TV Card Driver: -
4. TV Card: -
4. TV Card Type: -
4. TV Card Driver: -
MPEG2 Video Codec: MP
MPEG2 Audio Codec: MP
Satelite/CableTV Provider: -
HTPC Case: -
Cooling: -
Power Supply: 500W
Remote: MCE -
TV: -
TV - HTPC Connection: -


Hi,

i just switched back to MP from vista MC because of drivertrouble with vista.
cant tell you how happy i am to finally be able to use MP (have always tryed
but somehow have had hardwaretrouble eversince i bought the PRV500).
but now i have this very annoying problem...

MP runs perfectly until i drag it on my right screen. while running on that screen
(secund from my primary card (gf7900)) MP causes BOTH - the first and secund
screen of that device to go black for 1-2 sec. - it happens ~ every 5 min and keeps
me from working...

i assume the problem is somehow related to my vga-cards.

i am using the 9700gs as primary and a 7200gs as secundary card - running 4
displays with them.

all i really need is MP working on my primary screen (runs perfectly even in fullscreen)
and to be able to drag it as windowed app onto my right screen (produces the blackout).

i tryed to use dscaler or ffdshow - installed the rc1 and the svn (was suggested to me in
the irc-channel), setup a profile in my nvidiamanager for MP (AA and other filtering set to "off")
,monitored the taskmanager to see if some other application is causing this and... got no
ideas left...

i am really frustrated right now - i became used to work with 3 displays (really speeds things up)
but have to suffer poor 3d grafic with vista because i cant install the newer driver versions
(bluescreen - i assume that 2pcie-cards working not sly-mode are too uncommon for nvidia

on xp i can work with my screens, use 3d apps but... cant watch tv while surfing or writing
because of those blackouts (i had about 30 while while writing this and watching the news^^)

thank you for any ideas.