| 1 | <?xml version="1.0" encoding="ISO-8859-1"?>
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| 2 | <!DOCTYPE sect1 PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN"
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| 3 | "http://www.oasis-open.org/docbook/xml/4.5/docbookx.dtd" [
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| 4 | <!ENTITY % general-entities SYSTEM "../../general.ent">
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| 5 | %general-entities;
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| 6 |
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| 7 | <!ENTITY gdm-download-http "&gnome-download-http;/gdm/&gnome-minor-36;/gdm-&gdm-version;.tar.xz">
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| 8 | <!ENTITY gdm-download-ftp "&gnome-download-ftp;/gdm/&gnome-minor-36;/gdm-&gdm-version;.tar.xz">
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| 9 | <!ENTITY gdm-md5sum "2fb78422269f5e75067024ce5386521c">
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| 10 | <!ENTITY gdm-size "1.2 MB">
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| 11 | <!ENTITY gdm-buildsize "42 MB">
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| 12 | <!ENTITY gdm-time "0.3 SBU">
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| 13 | ]>
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| 14 |
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| 15 | <sect1 id="gdm" xreflabel="GDM-&gdm-version;">
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| 16 | <?dbhtml filename="gdm.html"?>
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| 17 |
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| 18 | <sect1info>
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| 19 | <othername>$LastChangedBy$</othername>
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| 20 | <date>$Date$</date>
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| 21 | </sect1info>
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| 22 |
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| 23 | <title>GDM-&gdm-version;</title>
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| 24 |
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| 25 | <indexterm zone="gdm">
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| 26 | <primary sortas="a-GDM">GDM</primary>
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| 27 | </indexterm>
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| 28 |
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| 29 | <sect2 role="package">
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| 30 | <title>Introduction to GDM</title>
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| 31 |
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| 32 | <para>
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| 33 | <application>GDM</application> is a system service that is
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| 34 | responsible for providing graphical logins and managing local
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| 35 | and remote displays.
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| 36 | </para>
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| 37 |
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| 38 | &lfs10_checked;
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| 39 |
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| 40 | <bridgehead renderas="sect3">Package Information</bridgehead>
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| 41 | <itemizedlist spacing="compact">
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| 42 | <listitem>
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| 43 | <para>
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| 44 | Download (HTTP): <ulink url="&gdm-download-http;"/>
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| 45 | </para>
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| 46 | </listitem>
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| 47 | <listitem>
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| 48 | <para>
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| 49 | Download (FTP): <ulink url="&gdm-download-ftp;"/>
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| 50 | </para>
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| 51 | </listitem>
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| 52 | <listitem>
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| 53 | <para>
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| 54 | Download MD5 sum: &gdm-md5sum;
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| 55 | </para>
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| 56 | </listitem>
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| 57 | <listitem>
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| 58 | <para>
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| 59 | Download size: &gdm-size;
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| 60 | </para>
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| 61 | </listitem>
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| 62 | <listitem>
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| 63 | <para>
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| 64 | Estimated disk space required: &gdm-buildsize;
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| 65 | </para>
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| 66 | </listitem>
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| 67 | <listitem>
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| 68 | <para>
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| 69 | Estimated build time: &gdm-time;
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| 70 | </para>
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| 71 | </listitem>
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| 72 | </itemizedlist>
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| 73 | <!--
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| 74 | <bridgehead renderas="sect3">Additional Downloads</bridgehead>
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| 75 | <itemizedlist spacing="compact">
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| 76 | <listitem>
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| 77 | <para>
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| 78 | Required patch:
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| 79 | <ulink url="&patch-root;/gdm-&gdm-version;-security_fix-1.patch"/>
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| 80 | </para>
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| 81 | </listitem>
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| 82 | </itemizedlist>
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| 83 | -->
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| 84 | <bridgehead renderas="sect3">GDM Dependencies</bridgehead>
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| 85 |
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| 86 | <bridgehead renderas="sect4">Required</bridgehead>
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| 87 | <para role="required">
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| 88 | <xref linkend="accountsservice"/>,
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| 89 | <xref linkend="gtk3"/>,
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| 90 | <xref linkend="iso-codes"/>,
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| 91 | <xref linkend="itstool"/>,
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| 92 | <xref linkend="libcanberra"/>,
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| 93 | <xref linkend="libdaemon"/>, and
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| 94 | <xref linkend="linux-pam"/>
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| 95 | </para>
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| 96 |
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| 97 | <bridgehead renderas="sect4">Optional</bridgehead>
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| 98 | <para role="optional">
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| 99 | <xref linkend="keyutils"/>
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| 100 | </para>
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| 101 |
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| 102 | <bridgehead renderas="sect4">Runtime Dependencies</bridgehead>
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| 103 | <para role="required">
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| 104 | <xref role="runtime" linkend="gnome-session"/>,
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| 105 | <xref role="runtime" linkend="gnome-shell"/>, and
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| 106 | <phrase revision="sysv"><xref role="runtime" linkend="elogind"/></phrase>
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| 107 | <phrase revision="systemd"><xref role="runtime" linkend="systemd"/></phrase>
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| 108 | </para>
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| 109 |
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| 110 | <para condition="html" role="usernotes">User Notes:
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| 111 | <ulink url="&blfs-wiki;/gdm"/>
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| 112 | </para>
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| 113 | </sect2>
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| 114 |
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| 115 | <sect2 role="installation">
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| 116 | <title>Installation of GDM</title>
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| 117 |
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| 118 | <para>
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| 119 | It is recommended to have a dedicated user and group to take
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| 120 | control of the <command>gdm</command> daemon after it is
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| 121 | started. Issue the following commands as the
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| 122 | <systemitem class="username">root</systemitem> user:
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| 123 | </para>
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| 124 |
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| 125 | <screen role="root"><userinput>groupadd -g 21 gdm &&
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| 126 | useradd -c "GDM Daemon Owner" -d /var/lib/gdm -u 21 \
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| 127 | -g gdm -s /bin/false gdm &&
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| 128 | passwd -ql gdm</userinput></screen>
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| 129 |
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| 130 | <!--
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| 131 | <note revision="sysv">
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| 132 | <para>
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| 133 | The <application>gdm</application> login screen is managed by
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| 134 | <application>gnome-shell</application>, which relies on the
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| 135 | <command>systemd-localed</command> daemon to get the system
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| 136 | settings. Since this daemon is not present on this system, a
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| 137 | <command>sed</command> is applied in the <xref
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| 138 | linkend="gnome-shell"/> instructions to change this behavior,
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| 139 | but then <application>gdm</application> uses the system settings,
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| 140 | which default to a US <quote>qwerty</quote> keyboard layout. This may
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| 141 | be an inconvience to enter a password when the machine keyboard
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| 142 | has a different layout. One possibility is to use the screen-keyboard
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| 143 | from the accessibility menu. Another possibility is to change the
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| 144 | defaults at compile time, by creating the following file:
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| 145 | </para>
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| 146 |
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| 147 | <screen><userinput>cat > data/dconf/defaults/01-keyboard << EOF
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| 148 | <literal>[org/gnome/desktop/input-sources]
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| 149 | sources=[('xkb','<replaceable>layout</replaceable>')]</literal>
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| 150 | EOF</userinput></screen>
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| 151 |
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| 152 | <para>
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| 153 | where <replaceable>layout</replaceable> should be replaced with
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| 154 | the acronym for your keyboard layout (one of the filenames in
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| 155 | <filename class="directory">/usr/share/X11/xkb/symbols</filename>).
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| 156 | </para>
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| 157 | </note>
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| 158 | -->
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| 159 | <para>
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| 160 | Install <application>GDM</application> by running the following
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| 161 | commands:
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| 162 | </para>
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| 163 |
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| 164 | <screen revision="sysv"><userinput>sed 's@systemd@elogind@' -i data/pam-lfs/gdm-launch-environment.pam &&
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| 165 |
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| 166 | ./configure --prefix=/usr \
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| 167 | --sysconfdir=/etc \
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| 168 | --localstatedir=/var \
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| 169 | --without-plymouth \
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| 170 | --disable-static \
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| 171 | --enable-gdm-xsession \
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| 172 | --with-systemdsystemunitdir=no \
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| 173 | --with-pam-mod-dir=/lib/security &&
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| 174 | make</userinput></screen>
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| 175 |
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| 176 | <screen revision="systemd"><userinput>./configure --prefix=/usr \
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| 177 | --sysconfdir=/etc \
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| 178 | --localstatedir=/var \
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| 179 | --without-plymouth \
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| 180 | --disable-static \
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| 181 | --enable-gdm-xsession \
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| 182 | --with-pam-mod-dir=/lib/security &&
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| 183 | make</userinput></screen>
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| 184 |
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| 185 | <para>
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| 186 | This package does not come with a usable test suite.
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| 187 | </para>
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| 188 |
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| 189 | <para>
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| 190 | Now, as the <systemitem class="username">root</systemitem> user:
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| 191 | </para>
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| 192 |
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| 193 | <screen role="root" revision="sysv"><userinput>make install</userinput></screen>
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| 194 |
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| 195 | <screen role="root" revision="systemd"><userinput>make install &&
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| 196 | install -v -m644 data/gdm.service /lib/systemd/system/gdm.service</userinput></screen>
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| 197 |
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| 198 | </sect2>
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| 199 |
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| 200 | <sect2 role="commands">
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| 201 | <title>Command Explanations</title>
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| 202 |
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| 203 | <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
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| 204 | href="../../xincludes/static-libraries.xml"/>
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| 205 |
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| 206 | <para>
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| 207 | <option>--with-initial-vt=7</option>: Use this switch
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| 208 | to make <application>GDM</application> start on VT7
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| 209 | instead of the first free VT.
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| 210 | </para>
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| 211 |
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| 212 | <para>
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| 213 | <parameter>--without-plymouth</parameter>: GDM now explicitly requires
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| 214 | plymouth to be installed. Use this switch to disable this dependency.
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| 215 | </para>
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| 216 |
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| 217 | <para>
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| 218 | <option>--with-default-pam-config=lfs</option>: Use this
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| 219 | switch if you did not create the
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| 220 | <filename>/etc/lfs-release</filename> file or distribution
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| 221 | auto detection will fail and you will be unable to use
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| 222 | <application>GDM</application>.
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| 223 | </para>
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| 224 |
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| 225 | <para>
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| 226 | <parameter>--enable-gdm-xsession</parameter>: This enables the
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| 227 | installation of the <application>GDM</application> Xsession file.
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| 228 | </para>
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| 229 |
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| 230 | </sect2>
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| 231 |
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| 232 | <sect2 role="configuration">
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| 233 | <title>Configuring GDM</title>
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| 234 |
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| 235 | <sect3 id="gdm-config">
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| 236 | <title>Config Files</title>
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| 237 |
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| 238 | <para>
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| 239 | <filename>/etc/gdm/custom.conf</filename>
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| 240 | </para>
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| 241 |
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| 242 | <indexterm zone="gdm gdm-config">
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| 243 | <primary sortas="e-etc-gdm-custom.conf">/etc/gdm/custom.conf</primary>
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| 244 | </indexterm>
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| 245 |
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| 246 | </sect3>
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| 247 |
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| 248 | <sect3>
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| 249 | <title>Configuration Information</title>
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| 250 |
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| 251 | <para>
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| 252 | The GDM daemon is configured using the
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| 253 | <filename>/etc/gdm/custom.conf</filename> file. Default values
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| 254 | are stored in GSettings in the <filename>gdm.schemas</filename>
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| 255 | file. It is recommended that end-users modify the
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| 256 | <filename>/etc/gdm/custom.conf</filename> file because the schemas
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| 257 | file may be overwritten when the user updates their system to have
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| 258 | a newer version of <application>GDM</application>.
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| 259 | </para>
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| 260 |
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| 261 | </sect3>
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| 262 |
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| 263 | <sect3 id="gdm-init">
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| 264 | <title><phrase revision="sysv">Boot Script</phrase>
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| 265 | <phrase revision="systemd">Systemd Unit</phrase></title>
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| 266 |
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| 267 | <indexterm zone="gdm gdm-init">
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| 268 | <primary sortas="f-gdm">gdm</primary>
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| 269 | </indexterm>
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| 270 |
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| 271 | <para revision="sysv">
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| 272 | To start the <command>gdm</command> automatically when the system
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| 273 | is booted, install the <filename>/etc/rc.d/init.d/gdm</filename>
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| 274 | init script included in the <xref linkend="bootscripts"/> package and
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| 275 | set the default runlevel to 5 (graphical login) as the
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| 276 | <systemitem class="username">root</systemitem> user:
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| 277 | </para>
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| 278 |
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| 279 | <para revision="systemd">
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| 280 | To start the <command>gdm</command> daemon at boot, enable
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| 281 | the previously installed systemd unit by running the following command
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| 282 | as the <systemitem class="username">root</systemitem> user:
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| 283 | </para>
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| 284 |
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| 285 | <screen role="root" revision="sysv"><userinput>make install-gdm</userinput></screen>
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| 286 |
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| 287 | <para revision="sysv">
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| 288 | In order to permanently set the default runlevel to 5, starting the
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| 289 | <command>gdm</command> greeter screen automatically, you can modify
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| 290 | <filename>/etc/inittab</filename>. As the <systemitem
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| 291 | class="username">root</systemitem> user:
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| 292 | </para>
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| 293 |
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| 294 | <screen role="root" revision="sysv"><userinput>sed /initdefault/s/3/5/ -i /etc/inittab</userinput></screen>
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| 295 |
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| 296 | <para revision="sysv">
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| 297 | You should also disable default elogind power management:
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| 298 | </para>
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| 299 |
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| 300 | <screen role="root" revision="sysv"><userinput>cat >> /etc/elogind/logind.conf << "EOF"
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| 301 | <literal>AllowSuspend=no
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| 302 | AllowHibernation=no</literal>
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| 303 | EOF</userinput></screen>
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| 304 |
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| 305 | <screen role="root" revision="systemd"><userinput>systemctl enable gdm</userinput></screen>
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| 306 |
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| 307 | </sect3>
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| 308 |
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| 309 | </sect2>
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| 310 |
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| 311 | <sect2 role="content">
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| 312 | <title>Contents</title>
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| 313 |
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| 314 | <segmentedlist>
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| 315 | <segtitle>Installed Programs</segtitle>
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| 316 | <segtitle>Installed Libraries</segtitle>
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| 317 | <segtitle>Installed Directories</segtitle>
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| 318 |
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| 319 | <seglistitem>
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| 320 | <seg>
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| 321 | gdm, gdmflexiserver, and gdm-screenshot
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| 322 | </seg>
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| 323 | <seg>
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| 324 | libgdm.so and pam_gdm.so (PAM Module)
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| 325 | </seg>
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| 326 | <seg>
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| 327 | /etc/gdm,
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| 328 | /usr/include/gdm,
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| 329 | /usr/share/gdm,
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| 330 | /usr/share/help/*/gdm,
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| 331 | /var/cache/gdm,
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| 332 | /var/lib/gdm,
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| 333 | /var/log/gdm, and
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| 334 | /var/run/gdm
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| 335 | </seg>
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| 336 | </seglistitem>
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| 337 | </segmentedlist>
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| 338 |
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| 339 | <variablelist>
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| 340 | <bridgehead renderas="sect3">Short Descriptions</bridgehead>
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| 341 | <?dbfo list-presentation="list"?>
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| 342 | <?dbhtml list-presentation="table"?>
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| 343 |
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| 344 | <varlistentry id="gdm-prog">
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| 345 | <term><command>gdm</command></term>
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| 346 | <listitem>
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| 347 | <para>
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| 348 | is a login prompt for <application>GNOME</application>.
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| 349 | </para>
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| 350 | <indexterm zone="gdm gdm-prog">
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| 351 | <primary sortas="b-gdm">gdm</primary>
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| 352 | </indexterm>
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| 353 | </listitem>
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| 354 | </varlistentry>
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| 355 |
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| 356 | <varlistentry id="gdm-screenshot">
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| 357 | <term><command>gdm-screenshot</command></term>
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| 358 | <listitem>
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| 359 | <para>
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| 360 | is a screenshot tool for <application>GDM</application>.
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| 361 | </para>
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| 362 | <indexterm zone="gdm gdm-screenshot">
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| 363 | <primary sortas="b-gdm-screenshot">gdm-screenshot</primary>
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| 364 | </indexterm>
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| 365 | </listitem>
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| 366 | </varlistentry>
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| 367 |
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| 368 | </variablelist>
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| 369 |
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| 370 | </sect2>
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| 371 |
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| 372 | </sect1>
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