3-16 Sun Ultra 45 and Ultra 25 Workstations Service and Diagnostics Manual • May 2006
3.5.4 Installation Considerations for Graphics
Accelerators
PCI-E 2 is the default console display. If there is no graphics accelerator installed
into PCI-E 2, consider the probe order shown in
TABLE 3-3.
3.5.4.1 Default Console Display
During the boot sequence, device nodes are probed. The PCI slots are probed in the
order described in
TABLE 3-3.
Unless you reconfigure the default, the first graphics accelerator occurring in the
probe order is designated the default console display and assigned the aliases
screen and /dev/fb.
3.5.4.2 Changing the Console Display
You can configure the OpenBoot PROM to designate a different graphics accelerator
as the console display. Use the show-displays utility, the nvalias command, and
the output-device parameter to make this change. For the following example, a
Sun XVR-2500 graphics accelerator is installed in physical slot PCI-E 2 as the default
console display and a Sun XVR-100 graphics accelerator is installed in slot PCI-X 0.
This example configures the Sun XVR-100 graphics accelerator to be the new console
display.
1. Obtain the ok prompt.
See “Obtaining the ok Prompt” on page 10-2.
TABLE 3-3 PCI Card Probe Order
Probe
Order Slot Identifier Device Node
1 PCI4 (PCI-E 2) /pci@1f,700000/ device 0
2 PCI2 (PCI-E 0) /pci@1e,600000/pci@0/pci@3/ device 0
3 PCI3 (PCI-E 1) /pci@1e,600000/pci@0/pci@8/ device 0
4 PCI1 (PCI-X 1) /pci@1e,600000/pci@0/pci@9/pci@0,2/ device 1
5 PCI0 (PCI-X 0) /pci@1e,600000/pci@0/pci@9/pci@0,2/ device 2
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