So simple that "hack" just barely applies. I've been trying to get my Indigo 2 online, and finally came to the part where I needed to sort out my monitor, as I did the IRIX install from a serial connection.
I'm running a big honkin' 21" Sun monitor, a Sony GDM-5410. In the past to get it to run SGI, I used a male-male 13W3 cable connected to my SGI box and some jumpers to connect the 3 video lines and the composite sync to the 13W3 cable connected to the monitor. (wired as per a thread here)
I understand that Sony apparently makes several models that can be either Sun or SGI, and I opened the interface end of the monitor to change the wiring. My intention was to swap the composite sync and maybe try to mess with the ID bits. When I got inside I found that the 13W3 cable went to two places. The R,G,and B lines went one place, and everything else went to an interconnect board, through a PCB connector. Since I've seen numerous threads here saying that all that was needed was the main R,G,and B lines, I just disconnected the PCB connector and fired it up. Works great with the I2 and is completely reversible. I imagine that the other Sony Sun/SGI "pairs" work in a similar manner, but YMMV.
Not much of a hack, but I didn't have to buy and destroy any adapters, or cut up the monitor cable.
mike
I'm running a big honkin' 21" Sun monitor, a Sony GDM-5410. In the past to get it to run SGI, I used a male-male 13W3 cable connected to my SGI box and some jumpers to connect the 3 video lines and the composite sync to the 13W3 cable connected to the monitor. (wired as per a thread here)
I understand that Sony apparently makes several models that can be either Sun or SGI, and I opened the interface end of the monitor to change the wiring. My intention was to swap the composite sync and maybe try to mess with the ID bits. When I got inside I found that the 13W3 cable went to two places. The R,G,and B lines went one place, and everything else went to an interconnect board, through a PCB connector. Since I've seen numerous threads here saying that all that was needed was the main R,G,and B lines, I just disconnected the PCB connector and fired it up. Works great with the I2 and is completely reversible. I imagine that the other Sony Sun/SGI "pairs" work in a similar manner, but YMMV.
Not much of a hack, but I didn't have to buy and destroy any adapters, or cut up the monitor cable.
mike
and numerous Sun, Mac, IBM, and DEC boxen