X Window System Ubuntu
Работает, если у Вас X-server gdm, gdm3 или kdm если у Вас что-то другое, просто замените.
Как перезапустить X-server
Перезапустить X-server (предварительно уйдя в консоль Ctrl + Atl + F1)можно командой
Как остановить X сервер
Остановить/Запустить X-server (предварительно уйдя в консоль Ctrl + Atl + F1) можно командой
Если не знаете какой у Вас X сервер, прочитайте статью XSession либо можете попробовать:
/etc/init.d/gdm stop || /etc/init.d/gdm3 stop || /etc/init.d/kdm stop || /etc/init.d/xdm stop || /etc/init.d/lightdm stop
Если и это не помогло попробуйте варианты отсюда
История
X Window System — оконная система, обеспечивающая стандартные инструменты и протоколы для построения графического интерфейса пользователя. Используется в UNIX-подобных ОС.
X Window System обеспечивает базовые функции графической среды: отрисовку и перемещение окон на экране, взаимодействие с устройствами ввода, такими как, например, мышь и клавиатура.
X Window System не определяет деталей интерфейса пользователя — этим занимаются менеджеры окон, которых разработано множество. По этой причине внешний вид программ в среде X Window System может очень сильно различаться в зависимости от возможностей и настроек конкретного оконного менеджера.
В X Window System предусмотрена сетевая прозрачность: графические приложения могут выполняться на другой машине в сети, а их интерфейс при этом будет передаваться по сети и отображаться на локальной машине пользователя.
В контексте X Window System термины «клиент» и «сервер» имеют непривычное для многих пользователей значение: «сервер» означает локальный дисплей пользователя (дисплейный сервер), а «клиент» — программу, которая этот дисплей использует (она может выполняться на удалённом компьютере).
Система X Window System была разработана в Массачусетском технологическом институте (MIT) в 1984 году.
По состоянию на февраль 2016 года версия протокола — X11R7.7 — появилась в июне 2012 года.
Проект X возглавляет фонд X.Org Foundation. Референсная (или образцовая) реализация (reference implementation) системы свободно доступна на условиях лицензии MIT и подобных ей лицензий.
X Window System часто называют X11 или просто X (в разговорной речи — «иксы»)
Using linux x window system
Using the X Window System means interacting with Linux on several different levels. X itself simply provides the graphics for displaying components of a graphical user interface: X draws the screen, draws objects on the screen, and tracks user input actions such as keyboard input and mouse operations. To organize all of this into familiar objects like windows, menus, and scrollbars, X relies on a separate program called a window manager. A window manager alone won’t necessarily assure tight integration between applications running under X; that higher degree of integration comes from something called a desktop environment. While X itself is a single program, X under Linux supports several popular window managers, and two popular desktop environments.
To use X effectively, you’ll learn the basic keyboard and mouse operations for communicating with X. If you’re like most X users, you’ll find it helpful to use a window manager and a desktop with X. You’ll learn why window managers and desktops are useful and get help in choosing and setting up a window manager and a desktop.
When you configured X, you specified the video modes in which X can operate. Recall that the current video mode determines the resolution and color depth of the image displayed by your monitor — for example 16 bits per pixel color depth and 1024×768 pixels screen resolution.
By pressing Shift-Alt-+ (using the plus key on the numeric keypad), you command X to switch to the next video mode in sequence. X treats the video modes as a cycle: If X is operating in the last video mode, this key sequence causes X to return to the first video mode.
The similar key sequence Shift-Alt— (using the minus key on the numeric keypad) causes X to switch to the previous video model. If you shift to a video mode that your monitor doesn’t support — as demonstrated by a unsteady or garbled image — you can use this key sequence to return to a supported video mode, avoiding the inconvenience of terminating X.
Even while X is running, you can access the Linux virtual consoles. To switch from graphical mode to a virtual console running in text mode, type Ctrl-Alt-F n, where F n is a function key and n is the number of the desired virtual console. X uses virtual console 7, so only virtual consoles 1-6 are accessible while running X.
To switch from a virtual console back to X, type Alt-F7. Nothing is lost when you switch from X to a virtual console or back, so you can move freely between the graphical and text operating modes.
As you learned in the previous chapter, you can terminate X by typing Ctrl-Alt-Backspace. X immediately terminates each program running under X, closes each open window, and returns your system to text mode.
This key sequence terminates X abruptly; most window managers support gentler ways of terminating X. You’ll learn about these later in this chapter.
While X is running, you cannot use the Ctrl-Alt-Del sequence to reboot your system. To reboot your system, you can terminate X and then use the Ctrl-Alt-Del sequence, or access a terminal window and enter the command:
The shutdown command terminates X and then reboots your system.
In Windows, you need not restart in DOS mode simply to have access to the DOS command line. Similarly, in X you need not switch to a virtual console simply to have access to the command line. X enables you to open a terminal window. A terminal window resembles the familiar Microsoft Windows MS-DOS Prompt window; like the Linux shell, it lets you type commands and view command output. Various window managers support different ways of accessing a terminal window.
The terminal window is just one example of a frequently used program under X that you’ll want to access. Most window managers install with a default set of common programs that can be accessed by left- or right-clicking with the mouse on the desktop. Most window managers, for example, let you click on the desktop and select a terminal window program from the pop-up menu that appears. However, the pop-up menu displayed by a window manager may display program names rather than program functions. In this case, you may have some difficulty determining which entry on the pop-up menu corresponds to a terminal program. Many programs that provide terminal windows have names that include the sequences xt or xterm. Selecting such an entry will probably launch a terminal window. You’ll learn more about window managers and how to use them later in this chapter.
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