Difference between revisions of "Start X at login"

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{{Note|1=If you have problems with writing non-ASCII letters within terminals in that new X, remove the {{Codeline|-l}} switch ([http://bugs.gentoo.org/show_bug.cgi?id=339182#c4 see here])}}.
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{{Note|1=If you have problems with writing non-ASCII letters within terminals in that new X, remove the {{Codeline|-l}} switch ([http://bugs.gentoo.org/show_bug.cgi?id=339182#c4 see here]).}}

Revision as of 20:24, 18 September 2011

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Template:Article summary start Template:Article summary text Template:Article summary heading Template:Article summary wiki Template:Article summary wiki Template:Article summary wiki Template:Article summary end

Typically, Template:Filename or Template:Filename are used to manually start X. Both will execute Template:Filename, which may be customized to start the window manager of choice as described in the xinitrc article.

The majority of users wishing to start an X server during the boot process will want to install a Display Manager instead.

By using the ~/.bash_profile method, X will be started once logged in from a tty. The /etc/inittab way allows automatically starting X without supplying a password.

Template:Filename

Note: This method can be combined with automatic login to virtual console and act similar to the inittab method, but it will properly register your session and work with ConsoleKit.

An alternative to a login manager is to add the following to the bottom of your Template:Filename (if Template:Filename does not yet exist, you can copy a skeleton version from Template:Filename. If you use zsh as your preferred shell, add the following lines to your Template:Filename instead.):

Template:File

or with additional checking (if tty1 (Template:Keypress + Template:Keypress + Template:Keypress) shows an error message):

Template:File

Or with a prompt:

Template:File

The user will be logged out when X is killed. In order to avoid this, remove the Template:Codeline part from the script.

Template:Filename

Warning: This method will not use Template:Filename or register your session, therefore no session will appear in `who` or `w`. Your session will also not be authorized as 'local' by ConsoleKit, so you will be unable to shutdown/suspend/reboot or mount drives without using Template:Codeline or Template:Codeline.

Another way of circumventing display managers and booting straight into a preferred window manager or desktop environment involves editing Template:Filename, changing:

id:3:initdefault:

[...]

x:5:respawn:/usr/bin/xdm -nodaemon

to:

id:5:initdefault:

[...]

x:5:once:/bin/su - -- PREFERRED_USER -l -c '/usr/bin/startx </dev/null >/dev/null 2>&1'

The Template:Codeline option invokes a "login shell" by prepending a dash (-) to its name. Because a command is specified with the Template:Codeline option, the shell is also run in "non-interactive mode". Bash does not do the normal login process in non-interactive login mode unless it is forced with the Template:Codeline option. The Template:Codeline option ensures that the Template:Codeline and Template:Codeline options are passed to the shell rather than used by su itself. These workarounds are needed for the combination of Gnu su and Bash; see "su 5.2.1 does not invoke bash as a login shell".

The standard input must be redirected (Template:Codeline) if Getty or some other program is still used on the console, otherwise there will be a conflict between multiple programs stealing console input from each other.

The output can also be redirected (Template:Codeline) to avoid outputting messages from X to the console.

The field populated with Template:Codeline may be changed to Template:Codeline which will restart X if it exits.

Additionally, Template:Codeline may be changed to any desired command or script. For example:

startx -- -nolisten tcp -br -deferglyphs 16

Also you can do this for multiple users using different runlevels,

x1:4:once:/bin/su - -- PREFERRED_USER1 -l -c '/usr/bin/startx </dev/null >/dev/null 2>&1'
x2:5:once:/bin/su - -- PREFERRED_USER2 -l -c '/usr/bin/startx </dev/null >/dev/null 2>&1'

and inserting a new entry in GRUB's Template:Filename:

# (0) Arch Linux
title  Arch Linux USER1
root   (hd0,0)
kernel /vmlinuz-linux root=/dev/disk/by-label/Arch ro 4
initrd /initramfs-linux.img

# (1) Arch Linux
title  Arch Linux USER2
root   (hd0,0)
kernel /vmlinuz-linux root=/dev/disk/by-label/Arch ro 5
initrd /initramfs-linux.img
Note: If you have problems with writing non-ASCII letters within terminals in that new X, remove the Template:Codeline switch (see here).