ubuntu

How to Install and Configure Xdebug 3 for PHP 8.3 on Ubuntu 24.04 — step-by-step Linux tutorial on Progressive Robot

How to Install PHP 8.3 on Ubuntu 24.04

PHP 8.3 brings performance improvements, typed class constants, the json_validate() function, and various engine enhancements over PHP 8.2. This guide installs PHP 8.3 on Ubuntu 24.04 LTS using the Ondrej PPA — the most up-to-date source for PHP on Ubuntu. Tested and valid on: Ubuntu 24.04 LTS Prerequisites Ubuntu 24.04 LTS server A user with […]

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Ubuntu 24.04 — quickjs — multiple vulnerabilities (3 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 24.04

Ubuntu 24.04 — quickjs — multiple vulnerabilities (3 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 7 January 2025 Affected versions: Ubuntu 24.04 (noble) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-7439-1 Related CVEs: CVE-2023-48183 CVE-2023-48184 CVE-2024-33263 Upstream summary: It was discovered that QuickJS could be forced to reference uninitialized memory in certain instances. An attacker could possibly use this issue […]

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Ubuntu 20.04 — openvpn — multiple vulnerabilities (5 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 20.04

Ubuntu 20.04 — openvpn — multiple vulnerabilities (5 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 7 January 2025 Affected versions: Ubuntu 20.04 (focal) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-6860-1 Related CVEs: CVE-2024-28882 CVE-2024-5594 CVE-2022-0547 CVE-2020-11810 CVE-2020-15078 Upstream summary: Reynir Björnsson discovered that OpenVPN incorrectly handled terminating client connections. A remote authenticated client could possibly use this issue to […]

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Common Problems 116620

Ubuntu 24.04 LTS – tracker-miner high CPU usage degrades desktop performance – Fix & Prevention

🟡 Medium   ⏱ 5–30 min  Last verified: 6 January 2025 Affected versions: Ubuntu 24.04 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 […]

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Common Problems 116619

Ubuntu 24.04 LTS PAM faillock Policy Locks Users Out Too Aggressively

🟡 Medium   ⏱ 5–30 min  Last verified: 5 January 2025 📖 ~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 […]

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Common Problems 116505

Ubuntu 24.04 LTS – NVIDIA driver mismatch causes black screen – Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 5 January 2025 Affected versions: Ubuntu 24.04 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 […]

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How to Install Vagrant and VirtualBox on Ubuntu 24.04 — step-by-step Linux tutorial on Progressive Robot

How to Install Ansible on Ubuntu 24.04

Ansible is an agentless IT automation tool that manages servers and deploys applications using simple YAML playbooks over SSH. This guide installs Ansible on Ubuntu 24.04 LTS and demonstrates a basic playbook. Tested and valid on: Ubuntu 24.04 LTS Prerequisites Ubuntu 24.04 LTS control node SSH access to managed nodes A user with sudo privileges […]

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Common Problems 116628

Ubuntu 24.04 LTS Livepatch Client Attach or Refresh Failure

🟡 Medium   ⏱ 5–30 min  Last verified: 4 January 2025 Affected versions: Ubuntu 24.04 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 […]

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Common Problems 116599

Ubuntu 24.04 LTS chrony Not Synchronizing Time Behind Firewall

🟡 Medium   ⏱ 5–30 min  Last verified: 4 January 2025 📖 ~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 […]

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Common Problems 116518

Ubuntu 24.04 LTS AppArmor Denies Service Startup

🟠 High   ⏱ 5–30 min  Last verified: 4 January 2025 Affected versions: Ubuntu 24.04 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 […]

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