Rhel6-x Window System-8. Local call and Remote call resolution for graphical desktops

the X or X11 (x Window System) of Linux is a basic graphical framework interface that has an essential graphical display. Based on this framework, there are graphical desktop Windows management applications such as GNOME/KDE (Window manager). and The graphics framework X11 includes two major x client and x Server, using C/S master-slave architecture. So it's a system and not just a component.

Local call and Remote call resolution for Linux graphical desktops

650) this.width=650; "src=" Http://s1.51cto.com/wyfs02/M02/83/83/wKiom1d0zkPCEoEIAAD-UfUhBcA288.jpg "title=" Local calls to the Linux graphics desktop and Remote call resolution. JPG "alt=" wkiom1d0zkpceoeiaad-ufuhbca288.jpg "/>

Description

The command is passed through the graph or text console, and after the kernel processing, the corresponding data is returned to the other party.

Local situation:

1. In the case of graphics, the kernel processed data is returned to X11, after the initial processing of X11 to draw a basic graphical interface, if the X11 upper layer and gnome/kde such as graphical desktop window management applications, then continue to these X11-based applications for better desktop effect processing, Finally return to the graphical interface to show the user

2. In the case of text, the data processed by the kernel is returned directly to the text Terminal console.

Remote conditions:

1. If it is graphics, through the network connection, we from the text client input instructions to the remote Linux host kernel processing, after the kernel processing, return the corresponding code and data, it should be directly like the local processing process, the remote Linux host itself on the display of the graphical interface, However, the reality is that remote Linux hosts are not allowed to open the graphical interface (which is installed but not turned on).

in this condition, the Linux kernel passes the data to SSH (because SSH is already configured X11 forwarding), so SSH forwards these graphics rendering data to the remote Windows operating system, and in the same vein, draw the graph rendering data , it is necessary to X11 the framework interface, so we have installed X11 replacement software such as Xming or Xmanager on Windows. the data will be forwarded to xming or Xmanager for processing, xming or Xmanager drawing the corresponding graphics, displayed through the Windows desktop.

2. In the case of text, it is a remote client that transmits the data over the network to the local display text.

Notable issues:

Graphical desktops such as gnome/kde in a 1.Linux environment these applications, after installation, are not loaded into memory if not turned on, and therefore do not consume the system's resources such as cpu/memory, simply because the installation only consumes disk resources.

2. Do not install the graphical environment can be called (this is not installed refers to the pure core of the minimal installation, no X11 and gnome/kde such programs)?

A: No graphics environment is not callable, please note that refers to the machine itself is called. Since the Linux host itself does not have a graphical interface installed, the graphics rendering data generated after core processing cannot be processed by its own x server, so it will not be able to go to remote windows to process this step. The error is interrupted because it cannot be rendered directly, so it will not be forwarded. So it is important to note that the host does not install the graphical interface is unable to forward the graphical interface of the data to the remote Windows host to display.

3. If the two types of X11 and Gnome/kde are installed, do they have to be installed in 2 or do they have to be installed on a certain line?

A: X11 is a basic graphical desktop framework environment, with some basic graphical display, want to be more friendly display will need to install on the GNOME/KDE, such as the X11-based dedicated graphics desktop window management software. Therefore, we say that in order to achieve graphical display, it is necessary to install X11, this is the basis, even if you just installed X11, you can use the graphical desktop remotely. But for the better display, we can put on the gnome/kde again. But can not only install GNOME/KDE, and not install X11, this is not possible, because gnome/kde such as software is based on X11.

4. Is the graphical desktop installed but not enabled to be callable? Enable is callable?

A: In the case of a Linux host installed with the graphical desktop enabled, it is natural to be able to call remotely.

without enabling it, we say that what we really need is not to say that the software is enabled and running, and what really needs to be a graphics framework that can be rendered is to know what these graphic codes do. So even if you don't enable the graphical desktop (which is referred to as Init 3 in the system), you can think of these rendering code as useful and pass the network to the remote Windows host for processing. Therefore, regardless of whether enabling is not enabled, it can be called remotely.

This article is from the "Confused children 123" blog, please be sure to keep this source http://hutuxiaohai123.blog.51cto.com/3491681/1794618

Rhel6-x Window System-8. Local call and Remote call resolution for graphical desktops