It's all in the title 🙂 Inserting a network card (or any other PCIe card, RAID controller, SAS, etc ) in the PCIe 16x slot of the Shuttle SG41J1 deactivate the DVI output. The VGA output still works fine.
Shuttle support says that it's a chipset limitation (G41 + ICH7), but that doesn't make sense to me : the VGA and DVI share the same hardware but the D/A converter stage.
Does anyone think that there may be some solution to this conundrum? Can a future BIOS update solve the problem?
Best Answer
It's the Intel chipset that's doing it, and it'll never change as it's a hardware/chipset limitation.
When you install a PCIe 4x or better card into the x16 slot it turns off the DVI and leaves the analog VGA port enabled. If you install a non-video 1x PCIe card, both video ports will remain active.
If it's a video card then regardless of PCIe channel amount (1x, 4x, etc.) both on-board video ports will turn off.
I just went through all this fun on a DQ45CB (same on-board graphics as the G41-series) trying to get a 3rd monitor working. :)
Intel's DQ45CB specs document actually has a pretty good table:
Not the answer you were hoping for I'm sure, but it's the way she goes. ;)