Vista SP1 + VGA adapter on Macbook Pro

Problem: Attach a vga monitor via a dvi to vga adapter, the vga screen is black.
Tests: Attached a DVI monitor (Mac 20" screen) - passed.
Tried another dvi to vga adapter - failed.
Tried another VGA based monitor - failed.
Vista does chime when the dvi to vga adapter is plugged in and I'm able to see a second display on the control panel and select a resolution. The display does work when I've booted in mac os x, or while vista is booting with the 640x480 startup screen. I've used another macbook pro 15" with the same setup and it works... so I would have to assume this is a problem with the hardware.
Setup: Boot Camp 2.1 with Vista SP1
Model name: MacBook Pro 15"
Model identifier: MacBookPro1,1
Processor name: Intel Core Duo
Processor speed: 2.16 ghz
Number of processors: 1
Total Number of Cores: 2
L2 Cache: 2 MB
Memory: 1 GB
Bus Speed: 667 MHz
Boot ROM Version: MBP11.0055.B08
SMC Version: 1.2f10
Does anyone have any suggestions for this issue?
Thanks-
Bruce

Hi
i did what you said and tried with other resolution/refresh rate combinations, also with anoter external monitor (and vga cable) but its still the same: monitor is detected but there's no signal.
Now I will try to chek if the adapter works on other pc and monitor.
Thanks
(anyway it was the firs time i connect this mac to an external monitor)

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Message was edited by: chr1shardcastle

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PING 212.23.3.100 (212.23.3.100): 56 data bytes
64 bytes from 212.23.3.100: icmp_seq=0 ttl=58 time=516.876 ms
64 bytes from 212.23.3.100: icmp_seq=1 ttl=58 time=233.578 ms
64 bytes from 212.23.3.100: icmp_seq=4 ttl=58 time=1420.669 ms
64 bytes from 212.23.3.100: icmp_seq=5 ttl=58 time=420.449 ms
64 bytes from 212.23.3.100: icmp_seq=6 ttl=58 time=29.720 ms
64 bytes from 212.23.3.100: icmp_seq=7 ttl=58 time=3307.350 ms
64 bytes from 212.23.3.100: icmp_seq=8 ttl=58 time=2307.465 ms
64 bytes from 212.23.3.100: icmp_seq=10 ttl=58 time=336.797 ms
64 bytes from 212.23.3.100: icmp_seq=11 ttl=58 time=32.153 ms
64 bytes from 212.23.3.100: icmp_seq=13 ttl=58 time=2258.254 ms
64 bytes from 212.23.3.100: icmp_seq=14 ttl=58 time=1258.072 ms
64 bytes from 212.23.3.100: icmp_seq=15 ttl=58 time=257.886 ms
64 bytes from 212.23.3.100: icmp_seq=16 ttl=58 time=31.105 ms
64 bytes from 212.23.3.100: icmp_seq=17 ttl=58 time=3110.678 ms
64 bytes from 212.23.3.100: icmp_seq=18 ttl=58 time=2110.769 ms
64 bytes from 212.23.3.100: icmp_seq=19 ttl=58 time=1139.461 ms
64 bytes from 212.23.3.100: icmp_seq=20 ttl=58 time=142.393 ms
64 bytes from 212.23.3.100: icmp_seq=21 ttl=58 time=29.261 ms
64 bytes from 212.23.3.100: icmp_seq=22 ttl=58 time=3275.200 ms
64 bytes from 212.23.3.100: icmp_seq=23 ttl=58 time=2275.256 ms
64 bytes from 212.23.3.100: icmp_seq=24 ttl=58 time=1314.971 ms
64 bytes from 212.23.3.100: icmp_seq=25 ttl=58 time=316.191 ms
64 bytes from 212.23.3.100: icmp_seq=26 ttl=58 time=29.871 ms
64 bytes from 212.23.3.100: icmp_seq=27 ttl=58 time=3097.048 ms
64 bytes from 212.23.3.100: icmp_seq=28 ttl=58 time=2096.986 ms
64 bytes from 212.23.3.100: icmp_seq=29 ttl=58 time=1126.190 ms
64 bytes from 212.23.3.100: icmp_seq=30 ttl=58 time=127.525 ms
64 bytes from 212.23.3.100: icmp_seq=31 ttl=58 time=28.869 ms
64 bytes from 212.23.3.100: icmp_seq=33 ttl=58 time=2425.877 ms
64 bytes from 212.23.3.100: icmp_seq=34 ttl=58 time=1425.730 ms
64 bytes from 212.23.3.100: icmp_seq=35 ttl=58 time=1001.442 ms
64 bytes from 212.23.3.100: icmp_seq=36 ttl=58 time=30.232 ms
64 bytes from 212.23.3.100: icmp_seq=38 ttl=58 time=2441.496 ms
64 bytes from 212.23.3.100: icmp_seq=39 ttl=58 time=1441.439 ms
64 bytes from 212.23.3.100: icmp_seq=40 ttl=58 time=441.249 ms
64 bytes from 212.23.3.100: icmp_seq=41 ttl=58 time=30.432 ms
64 bytes from 212.23.3.100: icmp_seq=42 ttl=58 time=3287.105 ms
64 bytes from 212.23.3.100: icmp_seq=43 ttl=58 time=2287.152 ms
64 bytes from 212.23.3.100: icmp_seq=44 ttl=58 time=1316.517 ms
64 bytes from 212.23.3.100: icmp_seq=45 ttl=58 time=318.959 ms
64 bytes from 212.23.3.100: icmp_seq=46 ttl=58 time=29.508 ms ^C
--- 212.23.3.100 ping statistics ---
49 packets transmitted, 41 packets received, 16% packet loss round-trip min/avg/max/stddev = 28.869/1197.761/3307.350/1107.757 ms
iStumbler showing 52%/37% signal strength - Airport Extreme-N/Airport Express-N
Vista Ultimate - 94% signal strength
Reply from 212.23.3.100: bytes=32 time=28ms TTL=58
Reply from 212.23.3.100: bytes=32 time=3525ms TTL=58
Reply from 212.23.3.100: bytes=32 time=29ms TTL=58
Reply from 212.23.3.100: bytes=32 time=30ms TTL=58
Reply from 212.23.3.100: bytes=32 time=29ms TTL=58
Reply from 212.23.3.100: bytes=32 time=29ms TTL=58
Reply from 212.23.3.100: bytes=32 time=29ms TTL=58
Reply from 212.23.3.100: bytes=32 time=30ms TTL=58
Reply from 212.23.3.100: bytes=32 time=29ms TTL=58
Reply from 212.23.3.100: bytes=32 time=28ms TTL=58
Reply from 212.23.3.100: bytes=32 time=29ms TTL=58
Reply from 212.23.3.100: bytes=32 time=29ms TTL=58
Reply from 212.23.3.100: bytes=32 time=28ms TTL=58
Reply from 212.23.3.100: bytes=32 time=28ms TTL=58
Reply from 212.23.3.100: bytes=32 time=28ms TTL=58
Reply from 212.23.3.100: bytes=32 time=28ms TTL=58
Reply from 212.23.3.100: bytes=32 time=28ms TTL=58
Reply from 212.23.3.100: bytes=32 time=28ms TTL=58
Reply from 212.23.3.100: bytes=32 time=29ms TTL=58
Reply from 212.23.3.100: bytes=32 time=28ms TTL=58
Reply from 212.23.3.100: bytes=32 time=28ms TTL=58
Reply from 212.23.3.100: bytes=32 time=31ms TTL=58
Reply from 212.23.3.100: bytes=32 time=28ms TTL=58
Reply from 212.23.3.100: bytes=32 time=29ms TTL=58
Reply from 212.23.3.100: bytes=32 time=29ms TTL=58
Reply from 212.23.3.100: bytes=32 time=29ms TTL=58
Reply from 212.23.3.100: bytes=32 time=28ms TTL=58
Reply from 212.23.3.100: bytes=32 time=28ms TTL=58
Reply from 212.23.3.100: bytes=32 time=28ms TTL=58
Reply from 212.23.3.100: bytes=32 time=29ms TTL=58
Reply from 212.23.3.100: bytes=32 time=29ms TTL=58
Reply from 212.23.3.100: bytes=32 time=35ms TTL=58
Reply from 212.23.3.100: bytes=32 time=29ms TTL=58
Reply from 212.23.3.100: bytes=32 time=29ms TTL=58
Reply from 212.23.3.100: bytes=32 time=29ms TTL=58
Reply from 212.23.3.100: bytes=32 time=29ms TTL=58
Reply from 212.23.3.100: bytes=32 time=29ms TTL=58
Ping statistics for 212.23.3.100:
Packets: Sent = 50, Received = 49, Lost = 1 (2% loss),
Approximate round trip times in milli-seconds:
Minimum = 28ms, Maximum = 3525ms, Average = 164ms

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