This document contains only my personal opinions and calls of judgement, and where any comment is made as to the quality of anybody's work, the comment is an opinion, in my judgement.
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As part of an upgrade or downgrade from Fedora 8 to CentOS 5 on my laptop there has been the need to get internal and external monitors work again.
The issue is that Fedora 8 had an X server and tools supporting
which allows not just pretend-resizing the current X
screen, but also adding new
outputs to it, but CentOS 5 only supports
RANDR version 1.1, which only allows resizing.
Therefore with RANDR 1.1 one must configure the X server statically with the number of monitors it must support at any one time, and this can mean one of three setups:
X displaywith two
X screensmanaged using XINERAMA (or equivalent proprietary alternatives like TwinView) as if joined.