Difference between revisions of "XDM"
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$ echo exec openbox > ~/.xsession | $ echo exec openbox > ~/.xsession | ||
$ chmod 744 ~/.xsession | $ chmod 744 ~/.xsession | ||
+ | |||
+ | Without these modifications XDM will execute the '''xinitrc''' from {{ic|/etc/X11/xinit/xinitrc}} (See [[Xorg#Running]] for details). | ||
If you would also like to use an Arch Linux theme for XDM, you can optionally install the {{Pkg|xdm-archlinux}} package, also available in the Official Repositories. | If you would also like to use an Arch Linux theme for XDM, you can optionally install the {{Pkg|xdm-archlinux}} package, also available in the Official Repositories. |
Revision as of 04:05, 30 November 2012
zh-CN:XDM Template:Article summary start Template:Article summary text Template:Article summary heading Template:Article summary wiki Template:Article summary end
From XDM manual page:
- Xdm manages a collection of X displays, which may be on the local host or remote servers. The design of xdm was guided by the needs of X terminals as well as The Open Group standard XDMCP, the X Display Manager Control Protocol. Xdm provides services similar to those provided by init, getty and login on character terminals: prompting for login name and password, authenticating the user, and running a "session."
XDM provides a simple and straightforward graphical login prompt.
Contents
Installation
Install xorg-xdm, available in the Official Repositories.
Use default launch script ~/.xsession
Make the ~/.xsession
file executable.
$ cp /etc/skel/.xsession /etc/skel/.xinitrc ~ # use default launch script
Or use a simple line (assume your favorite window manager is 'openbox')
$ echo exec openbox > ~/.xsession $ chmod 744 ~/.xsession
Without these modifications XDM will execute the xinitrc from /etc/X11/xinit/xinitrc
(See Xorg#Running for details).
If you would also like to use an Arch Linux theme for XDM, you can optionally install the xdm-archlinux package, also available in the Official Repositories.
See Display Manager for additional information.
Background wallpaper
Here are some tips to make XDM look nicer:
- Install the Quick Image Viewer:
# pacman -S qiv
- Make a directory to store background images. (e.g.
/root/backgrounds
or/usr/local/share/backgrounds
)
- Place your images in the directory. If you do not have any try [1] for starters.
- Edit
/etc/X11/xdm/Xsetup_0
. Change thexconsole
command to:
/usr/bin/qiv -zr /root/backgrounds/*
- Edit
/etc/X11/xdm/Xresources
. Add/replace the following defines:
xlogingreetFont: -adobe-helvetica-bold-o-normal--20------iso8859-1 xloginfont: -adobe-helvetica-medium-r-normal--14------iso8859-1 xloginpromptFont: -adobe-helvetica-bold-r-normal--14------iso8859-1 xloginfailFont: -adobe-helvetica-bold-r-normal--14------iso8859-1 xlogin*frameWidth: 1 xlogin*innerFramesWidth: 1 xlogin*logoPadding: 0 xlogin*geometry: 300x175-0-0
Comment out the logo defines:
#xlogin*logoFileName: /usr/X11R6/lib/X11/xdm/pixmaps/xorg.xpm #xlogin*logoFileName: /usr/X11R6/lib/X11/xdm/pixmaps/xorg-bw.xpm
For the exact meaning of the definitions, see the man page of xdm.
- Update
/etc/pacman.conf
so the changes do not get erased:
~NoUpgrade = etc/X11/xdm/Xsetup_0 etc/X11/xdm/Xresources
The changes will now give you a random wallpaper image and move the login prompt to the bottom-right edge of the screen.
Multiple X sessions & Login in the window
With the Xdmcp enable, you can easily run multiple X sessions simultaneously on the same machine.
# X -query ip_xdmcp_server :2
This will launch the second session, in window you need xorg-server-xephyr
# Xephyr -query this_machine_ip :2
Troubleshooting
XDM loops back to itself after login
The current version of the xorg-xdm package, available in the Official Repositories is patched to register sessions with ConsoleKit by default. If ConsoleKit is not running, XDM will fail to succesfully launch an X session. D-Bus can be used invoke ConsoleKit when called upon by XDM.
Make sure that the dbus package, available in the Official Repositories is installed and then make sure dbus
is included in the DAEMONS
array in /etc/rc.conf
.
# systemctl enable xdm.serviceor
# systemctl enable xdm-archlinux.service
Also, make sure that you are actually starting your window manager, for example with the command xmonad
in ~/.xsession
, and that ~/.xsession
has the correct permissions of 774
.
XDM does not update login records
The vanilla config of XDM calls /etc/X11/xdm/GiveConsolve
for the startup of display :0, whereas otherwise it calls /etc/X11/xdm/Xstartup
. Since only the latter contains a call to /usr/bin/sessreg
, the login record /var/run/utmp
is not updated for a login on display :0. As a consequence, the output of who
does not necessarily list the user after login through XDM. This was already discussed in the bug report FS#26395.
As a simple fix, append the following line to /etc/X11/xdm/GiveConsole
:
exec /usr/bin/sessreg -a -w /var/log/wtmp -u /var/run/utmp -x /etc/X11/xdm/Xservers -l $DISPLAY -h "" $USER
This change also enables the getuser
function presented in Acpid to work.