Penguin Computing Relion 1900e Technical Manual page 64

If there is no add-in video card in any PCIe* slot connected to CPU Socket 1 with the Legacy VGA Socket
option set to CPU Socket 1, this option is set to Disabled and grayed out and unavailable.
If there is no add-in video card in any PCIe* slot connected to CPU Socket 2 with the Legacy VGA Socket
option set to CPU Socket 2, this option is set to Disabled and grayed out and unavailable.
If the Legacy VGA Socket option is set to CPU Socket 1 with both Add-in Video Adapter and Onboard Video
Enabled, the onboard video device works as primary video device while add-in video adapter as secondary.
2. Onboard Video
Option Values: Enabled
Disabled
Help Text:
On-board video controller.
Warning: System video is completely disabled if this option is disabled and an add-in video adapter is not
installed.
Comments: When disabled, the system requires an add-in video card for the video to be seen. When there
is no add-in video card installed, Onboard Video is set to Enabled and grayed out so it cannot be changed.
If there is an add-in video card installed in a PCIe* slot connected to CPU Socket 1, and the Legacy VGA
Socket option is set to CPU Socket 1, then this Onboard Video option is available to be set and default as
Disabled.
If there is an add-in video card installed on a PCIe* slot connected to CPU Socket 2, and the Legacy VGA
Socket option is set to CPU Socket 2, this option is grayed out and unavailable, with a value set to Disabled.
This is because the Onboard Video is connected to CPU Socket 1, and is not functional when CPU Socket 2 is
the active path for video. When Legacy VGA Socket is set back to CPU Socket 1, this option becomes
available again and is set to its default value of Enabled.
3. Legacy VGA Socket
Option Values: CPU Socket 1
CPU Socket 2
Help Text:
Determines whether Legacy VGA video output is enabled for PCIe* slots attached to Processor Socket 1 or 2.
Socket 1 is the default.
Comments: This option is necessary when using an add-in video card on a PCIe* slot attached to CPU
Socket 2, due to a limitation of the processor IIO. The Legacy video device can be connected through either
socket but there is a setting that must be set on only one of the two. This option allows the switch to using a
video card in a slot connected to CPU Socket 2.
This option does not appear unless the BIOS is running on a board which has one processor installed on CPU
Socket 2 and can potentially have a video card installed in a PCIe* slot connected to CPU Socket 2.
This option is grayed out as unavailable and set to CPU Socket 1 unless there is a processor installed on CPU
Socket 2 and a video card installed in a PCIe* slot connected to CPU Socket 2. When this option is active and
is set to CPU Socket 2, then both Onboard Video and Dual Monitor Video are set to Disabled and grayed out
as unavailable. This is because the Onboard Video is a PCIe* device connected to CPU Socket 1, and is
unavailable when the Legacy VGA Socket is set to Socket 2.
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Relion 1900e/2900e Manual
Revision 1.3