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Odoo 18 Installation Guide

i.) Update & Upgrade Ubuntu Packages

sudo apt update
sudo apt upgrade

iii.) Install Python Dependencies and Create New User

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ii.) Update & Upgrade Ubuntu Packages 
sudo apt update
sudo apt upgrade

iii.) Install python dependencies and create new user
sudo apt install build-essential wget git python3.11-dev python3.11-venv libfreetype-dev libxml2-dev libzip-dev libsasl2-dev node-less libjpeg-dev zlib1g-dev libpq-dev libxslt1-dev libldap2-dev libtiff5-dev libopenjp2-7-dev libcap-dev

iv.) Create new system user for Odoo
/usr/sbin/adduser --system --shell /bin/bash --gecos 'Odoo' --group --home /opt/odoo odoo

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Way 1. Disable Wayland in GDM3
To begin, you can disable Wayland in the GDM3 (GNOME Display Manager) custom configuration file.

Step 1. Open the terminal by pressing Ctrl + Alt + T.

Step 2. Type the following command to open the GDM3 configuration file in a text editor with administrative privileges:

sudo nano /etc/gdm3/custom.conf

Step 3. Locate the [daemon] section in the file and uncomment the line "WaylandEnable=false".

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To uninstall modules from an Odoo database using the terminal, you can use the Odoo shell or execute SQL commands directly. Here's how to do it:

---

Method 1: Using Odoo Shell

1. Launch the Odoo shell:

   ./odoo-bin shell -d <your_database_name>

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Fixing Missing Headers, Footers, and Logos in Odoo PDF Reports on Ubuntu 22.04

Problem Description

While generating PDF reports in Odoo on Ubuntu 22.04, you might face issues such as:

• Missing or incomplete headers and footers
• Logos not appearing in reports
• Mixed content rendering errors

This problem often stems from the wkhtmltopdf version (wkhtmltox_0.12.6-1) installed on your system, which lacks the required Qt patching to handle these features properly. This version is known to cause compatibility issues on Ubuntu 22.04.

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 # Include the following in the manifest file
  'assets':{
        'web.assets_backend': ['module_name/static/src/css/style.css']
    },

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import qrcode
from PIL import Image

# The URL you want the QR code to open
url = 'https://el-mojtaba.com/daily-verse'

# Create a QR code instance with custom settings
qr = qrcode.QRCode(
    version=1,