I am replacing a burnt out Princeton monitor with a new LG 24MK430H-B monitor. But my MAC OS 10.6.8 is not detecting it. I used an HDMI to DVI cable. If I do a PRAM zapped restart, the monitor fires up and shows the Apple startup screen, but just sits and spools without starting up. Then I do another standard restart and the monitor goes black and the main monitor goes back to work and the system starts up. I have 3 monitors in use. 2 run from a Radeon graphics card with DVI and 1 runs from a USB adapter. All ran fine until one of the monitors plugged into the card power source started to go out. If I switch position of cables it doesn't change anything and the failing monitor will flash the image showing that the card is working fine. The card has both DVI types. 1 has the 24 pins, the other with 2 blocks of 9 pins with a space between them. The HDMI to DVI adapter has all 24 pins. Should I try a VGA to 24 pin DVI adapter instead of the HDMI to 24 pin DVI?
Mac Pro, Quad-Core Intel Xeon, 2.8 GHz, 4 GB ram, ATI Radeon HD 4870 with 518 MB vram.
Mac Pro, Quad-Core Intel Xeon, 2.8 GHz, 4 GB ram, ATI Radeon HD 4870 with 518 MB vram.
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