Octoscreen not started

[labomatik]

I'm not able to have octoscreen running, when i'm checking the status i've this:
`pi@octopi:~ $ systemctl status octoscreen.service
● octoscreen.service - OctoScreen
Loaded: loaded (/lib/systemd/system/octoscreen.service; enabled; vendor preset: enabled)
Active: activating (start) since Mon 2019-09-30 11:08:22 BST; 6s ago
Main PID: 4009 (xinit)
Tasks: 2 (limit: 4915)
CGroup: /system.slice/octoscreen.service
└─4009 /usr/bin/xinit /usr/bin/OctoScreen -- :0 -nolisten tcp -nocursor

Sep 30 11:08:22 octopi xinit[4009]: (EE)
Sep 30 11:08:22 octopi xinit[4009]: Fatal server error:
Sep 30 11:08:22 octopi xinit[4009]: (EE) Server is already active for display 0
Sep 30 11:08:22 octopi xinit[4009]: If this server is no longer running, remove /tmp/.X0-lock
Sep 30 11:08:22 octopi xinit[4009]: and start again.
Sep 30 11:08:22 octopi xinit[4009]: (EE)
Sep 30 11:08:22 octopi xinit[4009]: Please consult the The X.Org Foundation support
Sep 30 11:08:22 octopi xinit[4009]: at http://wiki.x.org
Sep 30 11:08:22 octopi xinit[4009]: for help.
Sep 30 11:08:22 octopi xinit[4009]: (EE)`

The screen on the pi is displaying the desktop.

Any idea?

[gdachs]

Did you try what the error message suggests?

[labomatik]

sure, after the delete of /tmp/.X0-lock

`pi@octopi:~ $ systemctl status octoscreen.service
● octoscreen.service - OctoScreen
Loaded: loaded (/lib/systemd/system/octoscreen.service; enabled; vendor preset: enabled)
Active: activating (start) since Mon 2019-09-30 11:18:32 BST; 5s ago
Main PID: 4323 (xinit)
Tasks: 2 (limit: 4915)
CGroup: /system.slice/octoscreen.service
└─4323 /usr/bin/xinit /usr/bin/OctoScreen -- :0 -nolisten tcp -nocursor

Sep 30 11:18:32 octopi xinit[4323]: (EE)
Sep 30 11:18:32 octopi xinit[4323]: Fatal server error:
Sep 30 11:18:32 octopi xinit[4323]: (EE) Cannot establish any listening sockets - Make sure an X server isn't already running(EE)
Sep 30 11:18:32 octopi xinit[4323]: (EE)
Sep 30 11:18:32 octopi xinit[4323]: Please consult the The X.Org Foundation support
Sep 30 11:18:32 octopi xinit[4323]: at http://wiki.x.org
Sep 30 11:18:32 octopi xinit[4323]: for help.
Sep 30 11:18:32 octopi xinit[4323]: (EE) Please also check the log file at "/var/log/Xorg.0.log" for additional information.
Sep 30 11:18:32 octopi xinit[4323]: (EE)
Sep 30 11:18:32 octopi xinit[4323]: (EE) Server terminated with error (1). Closing log file.`

[gdachs]

And you checked on the system that it is really not running?

[labomatik]

I've no idea how to check that. I'm not familiar with Xserver

[gdachs]

It is not specific to Xserver to check whether it is running.
You could use ps -ef | grep X

[labomatik]

pi@octopi:~ $ ps -ef | grep X root 7339 4374 0 07:10 tty7 00:00:00 /usr/lib/xorg/Xorg :0 -seat seat0 -auth /var/run/lightdm/root/:0 -nolisten tcp vt7 -novtswitch root 7452 7451 0 07:11 ? 00:00:00 [Xorg] <defunct> root 7455 7454 0 07:11 ? 00:00:00 [Xorg] <defunct> pi 7465 7271 0 07:11 pts/0 00:00:00 grep --color=auto X

[gdachs]

as you can see it is running already.

[mdaneman]

Here are a couple of suggestions to try.

1. Set Octoscreen as you default display manager:
   sudo dpkg-reconfigure octoscreen
   If it shows a screen saying that you have multiple display managers, click Ok, and then on the next screen that lists both lightdm and octoscreen, choose octoscreen and then choose Ok. Then reboot and see if octoscreen starts up.

Or if that doesn’t work

2. Remove lightdm altogether
   sudo dpkg -r --force-depends lightdm
   Then reboot.

[tubbers]

i am having some issues too. I try to set octoscreen with sudo dpkg-reconfigure octoscreen but it complains about lightDM being missing

pi@octopi:~ $ systemctl status octoscreen.service
● octoscreen.service - OctoScreen
Loaded: loaded (/lib/systemd/system/octoscreen.service; enabled; vendor preset: enabled)
Active: activating (start) since Sun 2019-11-24 11:48:06 AEDT; 728ms ago
Main PID: 2450 (xinit)
CGroup: /system.slice/octoscreen.service
├─2450 /usr/bin/xinit /usr/bin/OctoScreen -- :0 -nolisten tcp -nocursor
└─2451 /usr/lib/xorg/Xorg :0 -nolisten tcp -nocursor

Nov 24 11:48:06 octopi xinit[2450]: xorg-server 2:1.19.2-1+rpt1+deb9u2 (https://www.debian.org/support)
Nov 24 11:48:06 octopi xinit[2450]: Current version of pixman: 0.34.0
Nov 24 11:48:06 octopi xinit[2450]: Before reporting problems, check http://wiki.x.org
Nov 24 11:48:06 octopi xinit[2450]: to make sure that you have the latest version.
Nov 24 11:48:06 octopi xinit[2450]: Markers: (--) probed, (**) from config file, (==) default setting,
Nov 24 11:48:06 octopi xinit[2450]: (++) from command line, (!!) notice, (II) informational,
Nov 24 11:48:06 octopi xinit[2450]: (WW) warning, (EE) error, (NI) not implemented, (??) unknown.
Nov 24 11:48:06 octopi xinit[2450]: (==) Log file: "/var/log/Xorg.0.log", Time: Sun Nov 24 11:48:06 2019
Nov 24 11:48:06 octopi xinit[2450]: (==) Using config directory: "/etc/X11/xorg.conf.d"
Nov 24 11:48:06 octopi xinit[2450]: (==) Using system config directory "/usr/share/X11/xorg.conf.d"
pi@octopi:~ $ sudo dpkg-reconfigure octoscreen
Installing service /lib/systemd/system/lightdm.service
WARNING: /lib/systemd/system/lightdm.service is the selected default display manager but does not exist

[shilbert01]

dpkg-reconfigure seems to set the displaymanager to lightdm no matter what you choose in the dialogue. However
sudo systemctl disable lightdm

gave this

Synchronizing state of lightdm.service with SysV service script with /lib/systemd/systemd-sysv-install. Executing: /lib/systemd/systemd-sysv-install disable lightdm Removed /etc/systemd/system/display-manager.service.

Then,
sudo systemctl enable octoscreen.service

give this

Created symlink /etc/systemd/system/display-manager.service → /lib/systemd/system/octoscreen.service. Created symlink /etc/systemd/system/graphical.target.wants/octoscreen.service → /lib/systemd/system/octoscreen.service.

After this, do not use dpkg-reconfigure anymore for octoscreen because (I believe) it will once again reset this to lightdm

I had to set the PI to "autologin into Desktop" via sudo raspi-config

A reboot brought the system up and displayed the OctoScreen UI

[JeffB42]

@labomatik is this still an issue? Please look over https://github.com/Z-Bolt/OctoScreen/wiki/Setting-Up-OctoScreen-and-Your-Display and https://github.com/Z-Bolt/OctoScreen/wiki/Installing-OctoScreen-with-a-3.5%22-480x320-TFT-screen. Also, v2.7.0 was just released. I suggest installing the latest as it fixes a lot of bugs.

[JeffB42]

Closed due to lack of response.