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changes to dual monitor

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Wesley Stout 2011-03-26 00:11:45 -05:00
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documentation/manual/source/dualmonitors.rst
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@ -180,3 +180,46 @@ on :guilabel:`Save to X Configuration File`.
Click :guilabel:`Save` and you should be set. You may want to restart X or Click :guilabel:`Save` and you should be set. You may want to restart X or
your machine just to make sure all the settings carry over the next time you log your machine just to make sure all the settings carry over the next time you log
in. in.
Linux Systems With Intel Video
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Generally systems with Intel video cards work very well. They are well supported
by open source drivers. There are, however, a couple of issues that may require
some work arounds.
**Resolution Issue**
There is a limitation with certain cards that limits the total resolution to
2048x2048, so both monitors can not have a total resolution totaling more than
that. To work around this it may be necessary to position your monitor as a top
or bottom monitor as opposed to the typical side by side setup. This can easily
be accomplished through your desktop's control of monitors. Please see the
sections on dual monitors with KDE and GNOME above.
**Primary Monitor Issues**
With certain cards your system may get confused on what is the primary display.
For example many users will be using a laptop. You will want your laptop screen
to be the primary screen, and your projector to be the secondary monitor.
Certain Intel cards reverse this. To work around this you will need to know the
name of your monitor. If you are a KDE user this info is given to you in the
display settings. If you are not using KDE enter the following in a terminal
without your projector connected to your computer::
user@linux:~ $ xrandr -q
This will give you a long string of output. Screen names will be something along
the lines of LVDM, VGA-0 or some convention similar to that. Without your
projector connected to your computer only one monitor show as being connected.
That will be the monitor you will need as the primary. Now connect your
projector and enter::
user@linux:~ $ xrandr --output LVDM --primary
**Note** it has been reported that when this issue is occurring you will not
want to connect your projector until your desktop is running.