Type command ‘systemctl list-unit-files | grep enabled’
I can see many system service is started up.
root@tegra-ubuntu:~# systemctl list-unit-files | grep enabled
cups.path enabled
accounts-daemon.service enabled
anacron-resume.service enabled
anacron.service enabled
argus-daemon.service enabled
autovt@.service enabled
avahi-daemon.service enabled
bluetooth.service enabled
brltty.service enabled
cron.service enabled
cups-browsed.service enabled
cups.service enabled
dbus-org.bluez.service enabled
dbus-org.freedesktop.Avahi.service enabled
dbus-org.freedesktop.ModemManager1.service enabled
dbus-org.freedesktop.nm-dispatcher.service enabled
display-manager.service enabled
dns-clean.service enabled
dnsmasq.service enabled
docker.service enabled
getty@.service enabled
gpsd.service enabled
lightdm.service enabled
lvm2-monitor.service enabled
ModemManager.service enabled
network-manager.service enabled
networking.service enabled
NetworkManager-dispatcher.service enabled
NetworkManager.service enabled
nv-l4t-usb-device-mode.service enabled
nv.service enabled
nv_update_verifier.service enabled
nvcamera-daemon.service enabled
nvfb.service enabled
nvpmodel.service enabled
ofono.service enabled
pppd-dns.service enabled
rsyslog.service enabled
serial-getty@.service enabled
ssh.service enabled
sshd.service enabled
syslog.service enabled
ubuntu-fan.service enabled
unattended-upgrades.service enabled
whoopsie.service enabled
apport-forward.socket enabled
avahi-daemon.socket enabled
cups.socket enabled
dm-event.socket enabled
docker.socket enabled
gpsd.socket enabled
lvm2-lvmetad.socket enabled
lvm2-lvmpolld.socket enabled
rpcbind.socket enabled
snapd.socket enabled
default.target enabled
multi-user.target enabled
remote-fs.target enabled
runlevel2.target enabled
runlevel3.target enabled
runlevel4.target enabled
apt-daily.timer enabled
Are there some scripts in the rootfs to config the started up service?
Also,How to config TX2 start-up to terminal mode(currently is windows Desktop)? Or how to Config the runlevel?
Have check those configure files at /etc/systemd/system/*
A note about “/etc/systemd/system/*”: Many of these are symbolic links into the “standard” version which Ubuntu provides when there is more than one possible choice. Entries in the “/etc” take precedence over other system preferences. If you were to link a current systemd service in the “/etc” location to itself, then this is the same as doing nothing; if there are several possibilities, and you change which one the symbolic link points at, then you’ve picked a new version without harming the filesystem. If you were to copy a file from somewhere else and put it in the “/etc” location, and then edit, then you’d have your customization; to revert you’d just remove that file (or typically for temporary purposes I bzip2 the file).
I want to have tx2 system not login ubuntu desktop System(just have tx2 run our customer app).
Try run the following command:
systemctl disable lightdm.service
the output log message:
Synchronizing state of lightdm.service with SysV init with /lib/systemd/systemd-sysv-install…
Executing /lib/systemd/systemd-sysv-install disable lightdm
insserv: warning: current start runlevel(s) (empty) of script lightdm' overrides LSB defaults (2 3 4 5). insserv: warning: current stop runlevel(s) (0 1 2 3 4 5 6) of script lightdm’ overrides LSB defaults (0 1 6).
insserv: warning: current start runlevel(s) (empty) of script lightdm' overrides LSB defaults (2 3 4 5). insserv: warning: current stop runlevel(s) (0 1 2 3 4 5 6) of script lightdm’ overrides LSB defaults (0 1 6).
But after reboot, it still start-up desktop UI System.
Boot to console as default by below command
sudo systemctl set-default multi-user.target
Boot to Desktop by below command.
sudo systemctl set-default graphical.target
Hi ShaneCCC,
Unfortunately,I try the command
sudo systemctl set-default multi-user.target, then reboot the system, TX2 still boot to Desktop.
By the way,Currently, TX2 is installing Jetpack3.3.
Can you please check it again?
THanks,
I am try it on J4.2 it’s ubuntu 18.04, does the J3.3 is 16.04?
For 16.04 could you have a try below link
https://askubuntu.com/questions/859630/how-to-start-ubuntu-in-console-mode
Hello ShaneCCC,
Try to the above link.
edit /etc/default/grub
GRUB_CMDLINE_LINUX_DEFAULT=“text”
GRUB_TERMINAL=console
But I don’t see the file /etc/default/grub on TX2 Ubuntun16.04
I just create file /etc/default/grub then add the following line
GRUB_CMDLINE_LINUX_DEFAULT=“text”
GRUB_TERMINAL=console
when run command ‘sudo update-grub’，it show "bash:update-grub:command not found
Can you please confirm if the way is OK on TX2 Ubuntu16.04?
Thanks,
Martin
Just run below command no need to update the grub.
sudo systemctl enable multi-user.target --force
sudo systemctl set-default multi-user.target
sudo systemctl enable graphical.target --force
sudo systemctl set-default graphical.target
Hello ShaneCCC,
Thanks for your update.
I just try the command, but have no effect.
nvidia@tegra-ubuntu:~$ sudo systemctl enable multi-user.target --force
nvidia@tegra-ubuntu:~$ sudo systemctl set-default multi-user.target
Created symlink from /etc/systemd/system/default.target to /lib/systemd/system/multi-user.target.
nvidia@tegra-ubuntu:~$
nvidia@tegra-ubuntu:~$ sudo -s
root@tegra-ubuntu:~# reboot
Unfortunately, it still boot to ubuntu graphical mode on Ubuntu16.04.
Also, I tried it on sdk4.2 with ubuntu18.04 it is working fine.
Thanks,
Martin
There’s no problem on my side. After that I boot to full console mode.
nvidia@nvidia-desktop:~$ sudo systemctl enable multi-user.target --force
[sudo] password for nvidia:
The unit files have no installation config (WantedBy, RequiredBy, Also, Alias
settings in the [Install] section, and DefaultInstance for template units).
This means they are not meant to be enabled using systemctl.
Possible reasons for having this kind of units are:
- A unit may be statically enabled by being symlinked from another unit’s
.wants/ or .requires/ directory.
- A unit’s purpose may be to act as a helper for some other unit which has
a requirement dependency on it.
- A unit may be started when needed via activation (socket, path, timer,
D-Bus, udev, scripted systemctl call, …).
- In case of template units, the unit is meant to be enabled with some
instance name specified.
nvidia@nvidia-desktop:~$ sudo systemctl set-default multi-user.target
Removed /etc/systemd/system/default.target.
Created symlink /etc/systemd/system/default.target → /lib/systemd/system/multi-user.target.
nvidia@nvidia-desktop:~$ sudo reboot
Hello ShaneCCC,
It is a little strange！
Are you testing on Jetpack3.3(ubuntu16.04LTS)?
Thanks,
Martin
OOPS I try on J4.2 ubuntu 18.0
Could you try below command for J3.3 ubuntu 16.04
sudo systemctl disable lightdm.service
Unfortunately，try ‘sudo systemctl disable lightdm.service’, it is not working.
Hi,
It is not working on TX2 Jetpack3.3 Ubuntu16.04.
The following is the log:
sudo systemctl stop gdm
Failed to stop gdm.service: Unit gdm.service not loaded.
It seem that is not correcly way,
Our project urgently need to get this issue resolved.
Can you please provide correctly way to fix the issues on TX2 Jetpack3.3 Ubuntu16.04 ?
@27653276
Did you have check linuxdev’s comment?
Yes, I have checked linuxdev’s comment, That’s not working.
when run the command “sudo systemctl stop gdm”
it show “Failed to stop gdm.service: Unit gdm.service not loaded.”
＠27653276
Could you try to uninstall the ubuntu-desktop by below command
sudo apt purge ubuntu-desktop -y