xfree86: Document BusID PCI domain format in xorg.conf manpage

Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Michel Dänzer <michel.daenzer@amd.com>
This commit is contained in:
Michel Dänzer 2017-06-19 19:05:31 +09:00 committed by Adam Jackson
parent 8e00dc59b5
commit 3b0fd9421a

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@ -1376,10 +1376,10 @@ For PCI/AGP cards,
the
.I bus\-id
string has the form
.BI PCI: bus : device : function
(e.g., \(lqPCI:1:0:0\(rq might be appropriate for an AGP card).
This field is usually optional in single-head configurations when using
the primary graphics card.
.BI PCI: bus @ domain : device : function
(e.g., \(lqPCI:1@0:0:0\(rq might be appropriate for an AGP card). The
"@domain" part can be left out for PCI domain 0. This field is usually
optional in single-head configurations when using the primary graphics card.
In multi-head configurations, or when using a secondary graphics card in a
single-head configuration, this entry is mandatory.
Its main purpose is to make an unambiguous connection between the device