GDM is a system service that is responsible for providing graphical logins and managing local and remote displays.
Development versions of BLFS may not build or run some packages properly if LFS or dependencies have been updated since the most recent stable versions of the books.
Download (HTTP): https://download.gnome.org/sources/gdm/45/gdm-45.0.1.tar.xz
Download MD5 sum: 4912429c0231a95fedd086d1ac8f54ea
Download size: 836 KB
Estimated disk space required: 34 MB
Estimated build time: 0.3 SBU
AccountsService-23.13.9, DConf-0.40.0, libcanberra-0.30 (built after GTK+-3.24.40), and Linux-PAM-1.6.0
It is recommended to have a dedicated user and group to take control of the gdm daemon after it is started. Issue the following commands as the root
user:
groupadd -g 21 gdm && useradd -c "GDM Daemon Owner" -d /var/lib/gdm -u 21 \ -g gdm -s /bin/false gdm && passwd -ql gdm
Install GDM by running the following commands:
sed -e 's@systemd@elogind@' \ -e '/elogind/isession required pam_loginuid.so' \ -i data/pam-lfs/gdm-launch-environment.pam && mkdir build && cd build && meson setup .. \ --prefix=/usr \ --buildtype=release \ -Dgdm-xsession=true \ -Drun-dir=/run/gdm \ -Dlogind-provider=elogind \ -Dsystemd-journal=false \ -Dsystemdsystemunitdir=no \ -Dsystemduserunitdir=no && ninja
This package does not come with a usable test suite.
Now, as the root
user:
ninja install
--buildtype=release
: Specify a buildtype suitable for stable releases of the package, as the default may produce unoptimized binaries.
-Dinitial-vt=7
: Use this switch to make GDM start on VT7 instead of the first free VT.
-Ddefault-pam-config=lfs
: Use this switch if you did not create the /etc/lfs-release
file or distribution auto detection will fail and you will be unable to use GDM.
-Dgdm-xsession=true
: This enables the installation of the GDM Xsession file.
The GDM daemon is configured using the /etc/gdm/custom.conf
file. Default values are stored in GSettings in the gdm.schemas
file. It is recommended that end-users modify the /etc/gdm/custom.conf
file because the schemas file may be overwritten when the user updates their system to have a newer version of GDM.
On some systems with NVIDIA GPUs, GDM will hide Wayland sessions by default. This is often done to prevent users from encountering problems with buggy drivers, which can result in system lockups, application crashes, power management problems, and graphics slowdowns. If you have an NVIDIA GPU and still want to try running Wayland sessions anyway, execute the following command as the root
user:
ln -s /dev/null /etc/udev/rules.d/61-gdm.rules
To start gdm automatically when the system is switched to runlevel 5, install the /etc/rc.d/init.d/xdm
script and the /etc/sysconfig/xdm
configuration file included in the blfs-bootscripts-20231119 package and adjust /etc/inittab
by running as the root
user:
make install-gdm
In order to permanently set the default runlevel to 5, starting the gdm greeter screen automatically, you can modify /etc/inittab
. As the root
user:
sed /initdefault/s/3/5/ -i /etc/inittab
GDM will suspend the system when the greeter screen has been running for a while without any interactive input. If you want to disable auto-suspending for any reason (for example if the system is hosting some services besides functioning as a desktop system), as the root
user, issue:
su gdm -s /bin/bash \ -c "dbus-run-session \ gsettings set org.gnome.settings-daemon.plugins.power \ sleep-inactive-ac-type \ nothing"