Help with Installation of Radeon HD Southern Islands and 3D VisionTek HD 7750 card

[danbeaver]

Your VisionTek HD 7750 is a dual display, have you tried both ports?  My VisionTek Radeon 7750 SFF 1GB X16 PCIE Express Graphics Card output to the X1000 running AOS4.1FE on one port, and under Linux thru the other.  Try the other port

No, I do not know why.  I use an HDMI switch that automatically routes the active signal to the monitor, so now it doesn't matter, but it was a bitch to figure out.

[danbeaver]

Oh!  Now I see the problem: it is identical to the one I bought, installed in my X1000 and outputs on the HDMI port vs DVI port depending on the OS on my computer.  But having a lessor platform, your mileage may vary.

I listed this as a problem on the Hyperion forums quite a while back; perhaps you should ask there.