HP Remote Graphics Software (RGS) Manual de usuario descargar pdf (Pagina 42)

Previous releases of the X Window System used the le /etc/X11/xorg.conf to store initial setup

information. When a change occurred with the monitor or video card, you were required to edit the le

manually. Although current releases of Red Hat® Enterprise Linux® (RHEL) have largely automated the

process, you still need to edit the le to support congurations where no monitor is attached or where you

want the X server to simulate that it has a dierent monitor attached to it with dierent resolution

capabilities. Similarly, this is also the case when you want to match the receiver’s resolution in an RGS session

where the X server cannot determine the capabilities of the receiver’s monitors.

NOTE: Some window managers (such as GNOME) allow you to modify display preferences, which can

sometimes result in the creation of the following le:

$HOME/.config/monitors.xml

When you log in to the system and a window manager starts a session, it uses information from this le to set

the current desktop resolution. This can reverse the resolution matching performed by RGS and cause the

desktop to be set to an undesired resolution.

For example, if you set the desktop resolution of the sender to 1024x768 using a window manager, that

resolution is stored in monitors.xml. If an RGS connection is then established with display resolution

matching enabled on a receiver with a resolution of 1920x1200, the sender display resolution changes to

1920x1200 and then to 1024x768. There is no

notication that the resolution match request failed (because

it did not).

To avoid this behavior, avoid setting the resolution using window manager controls. It is safe to delete

monitors.xml to restore display resolution matching functionality. See the documentation for your

operating system or window manager for more information about where and how it manages display

settings.

Conguring the X server

The X server can be congured in several dierent ways. This section describes the suggested methods for

two dierent scenarios.

Scenario 1: All receivers have the same conguration

If all receivers have the same conguration, then using the Virtual entry under the Screen section of the le

xorg.conf is the easiest method.

For example, if all receivers have four monitors congured at 1280x1024 each, congure the X server to run

at a resolution of 5120x1024 by making the following additions to the le xorg.conf.

Add the following under the Device section:

Option "UseDisplayDevice" "none"

Option "UseEDID" "false"

Add the following under the Screen section:

SubSection "Display"

Virtual 5120 1024

Depth 24

EndSubSection

Now the X server is congured to have a single screen running at a resolution of 5120x1024, which covers all

four of the receiver’s monitors. You can use this method to support a very large virtual display limited only by

frame buer memory.

32 Chapter 6 Using RGS features

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