Ubuntu 22.04

Common Problems 116901

Ubuntu 22.04 LTS – apt update fails with Release file not valid yet – Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 28 July 2022 Affected versions: Ubuntu 22.04 LTS 📖 ~1 min read Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & Acceptance Criteria Rollback Plan Prevention & Hardening Related Errors […]

Read more
How To Install Plausible Analytics on Ubuntu 22.04 — step-by-step Docker tutorial on Progressive Robot

How To Install Plausible Analytics on Ubuntu 22.04

Plausible Analytics is an open-source, self-hosted web analytics application written in Elixir. It focuses on being simple, and privacy-focused. In this tutorial you will install the Plausible app and a few helper services using Docker Compose, then install Nginx and Certbot to set up a secure HTTPS reverse proxy.

Read more
Common Problems 116912

Ubuntu 22.04 no sound output on speakers or headset

🟡 Medium   ⏱ 5–30 min  Last verified: 26 July 2022 📖 ~1 min read Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & Acceptance Criteria Rollback Plan Prevention & Hardening Related Errors & Cross-Refs References & Further […]

Read more
Ubuntu 22.04 — shim — multiple vulnerabilities (11 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 22.04

Ubuntu 22.04 — shim — multiple vulnerabilities (11 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 July 2022 Affected versions: Ubuntu 22.04 (jammy) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-6355-1 Related CVEs: CVE-2022-28737 CVE-2021-3695 CVE-2021-3696 CVE-2021-3697 CVE-2021-3981 CVE-2022-28733 CVE-2022-28734 CVE-2022-28735  +3 more Upstream summary: Daniel Axtens discovered that specially crafted images could cause a heap-based out-of-bonds write. A local […]

Read more
Common Problems 117112

Ubuntu 22.04 software updater fails with repository 404

🟡 Medium   ⏱ 5–30 min  Last verified: 24 July 2022 📖 ~1 min read Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & Acceptance Criteria Rollback Plan Prevention & Hardening Related Errors & Cross-Refs References & Further […]

Read more
Ubuntu 22.04 — openssl-ibmca — vulnerability — patch and remediation guide — diagnosis and fix on Ubuntu 22.04

Ubuntu 22.04 — openssl-ibmca — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 24 July 2022 Affected versions: Ubuntu 22.04 (jammy) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-6046-1 Related CVEs: https://launchpad.net/bugs/2015454 Upstream summary: It was discovered that OpenSSL-ibmca incorrectly handled certain RSA decryption. An attacker could possibly use this issue to expose sensitive information. Table of contents […]

Read more
How To Connect to a Redis Database — step-by-step Linux tutorial on Progressive Robot

How To Connect to a Redis Database

Whether you’ve installed Redis locally or you’re working with a remote instance, you need to connect to it in order to perform certain operations. In this tutorial we will go over how to connect to Redis from the command line, how to authenticate and test your connection, as well as how to close a Redis connection.

Read more
Common Problems 117020

Ubuntu 22.04 LTS APT Lock Contention Blocks Automated Patch Jobs

🟡 Medium   ⏱ 5–30 min  Last verified: 22 July 2022 📖 ~1 min read Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & Acceptance Criteria Rollback Plan Prevention & Hardening Related Errors & Cross-Refs References & Further […]

Read more
Common Problems 116951

Ubuntu 22.04 LTS – NetworkManager and netplan renderer mismatch causes interface issues – Fix & Prevention

🟡 Medium   ⏱ 5–30 min  Last verified: 21 July 2022 Affected versions: Ubuntu 22.04 LTS 📖 ~1 min read Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & Acceptance Criteria Rollback Plan Prevention & Hardening Related Errors […]

Read more
How to Use Ansible to Install and Set Up Docker on Ubuntu 22.04 — step-by-step Docker tutorial on Progressive Robot

How to Use Ansible to Install and Set Up Docker on Ubuntu 22.04

Docker is an application that simplifies the process of managing application processes in *containers*. This guide explains how to use Ansible to automate the steps contained in our guide on How To Install and Use Docker on Ubuntu 22.04. Ansible is a modern configuration management tool that can be used to automate the provisioning and configuration of remote systems.

Read more
CHAT