ubuntu

Common Problems 116099

Ubuntu 26.04 LTS – LVM thin pool reaches 100% and new writes fail

🟠 High   ⏱ 5–30 min  Last verified: 5 August 2026 Affected versions: Ubuntu 26.04 LTS Ubuntu 26.04 Ubuntu 26.04.1 📖 ~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 […]

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Common Problems 116109

Ubuntu 26.04 LTS – Docker overlay2 fills root disk and containers fail to start

🟠 High   ⏱ 5–30 min  Last verified: 5 August 2026 Affected versions: Ubuntu 26.04 LTS Ubuntu 26.04 Ubuntu 26.04.1 📖 ~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 […]

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Common Problems 116052

Ubuntu 26.04 LTS – boot drops to initramfs BusyBox shell – Fix & Prevention (FIX-PREVENTION-2)

🟠 High   ⏱ 5–30 min  Last verified: 5 August 2026 Affected versions: Ubuntu 26.04 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 115905

Ubuntu 26.04 LTS – Broken dependencies after interrupted upgrade – Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 4 August 2026 Affected versions: Ubuntu 26.04 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 Configure PHP-FPM with Nginx on Ubuntu 26.04 — step-by-step Linux tutorial on Progressive Robot

How to Configure PHP-FPM with Nginx on Ubuntu 26.04

PHP-FPM (FastCGI Process Manager) is the recommended way to run PHP behind Nginx. It manages PHP worker processes efficiently, supports dynamic/static/ondemand process management, and provides per-pool configuration for multi-tenant servers. This guide configures PHP-FPM 8.4 with Nginx on Ubuntu 26.04 LTS. Tested and valid on: Ubuntu 26.04 LTS Prerequisites Ubuntu 26.04 LTS with Nginx installed […]

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Common Problems 116134

Ubuntu 26.04 LTS – GNOME Shell crashes due to extension conflicts – Fix & Prevention

🟡 Medium   ⏱ 5–30 min  Last verified: 4 August 2026 Affected versions: Ubuntu 26.04 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 Configure Nginx Server Blocks (Virtual Hosts) on Ubuntu 26.04 — step-by-step Linux tutorial on Progressive Robot

How to Install OpenLiteSpeed Web Server on Ubuntu 26.04

OpenLiteSpeed (OLS) is a high-performance, event-driven open-source web server from LiteSpeed Technologies. It supports PHP via LiteSpeed SAPI (LSPHP) and includes a built-in WebAdmin GUI. It is significantly faster than Apache for PHP workloads and is a popular choice for WordPress hosting. This guide installs and configures OLS on Ubuntu 26.04 LTS. Tested and valid […]

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Common Problems 116033

Ubuntu 26.04 LTS Boots to initramfs Prompt

🔴 Critical   ⏱ 5–30 min  Last verified: 3 August 2026 Affected versions: 26.04 📖 ~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 […]

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Ubuntu 22.04 — python-tornado — multiple vulnerabilities (8 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 22.04

Ubuntu 22.04 — python-tornado — multiple vulnerabilities (8 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 3 August 2026 Affected versions: Ubuntu 22.04 (jammy) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-8198-1 Related CVEs: CVE-2026-31958 CVE-2026-35536 CVE-2025-67724 CVE-2025-67725 CVE-2025-67726 CVE-2025-47287 CVE-2023-28370 CVE-2024-52804 Upstream summary: It was discovered that Tornado incorrectly handled parsing of large multipart request bodies. An attacker could possibly […]

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Ubuntu 22.04 — mysql-8.0 — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 22.04

Ubuntu 22.04 — mysql-8.0 — multiple vulnerabilities (20 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 3 August 2026 Affected versions: Ubuntu 22.04 (jammy) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-7994-1 Related CVEs: CVE-2026-21937 CVE-2026-21948 CVE-2026-21968 CVE-2026-21941 CVE-2026-21936 CVE-2026-21964 CVE-2025-53054 CVE-2025-53040  +12 more Upstream summary: Multiple security issues were discovered in MySQL and this update includes new upstream MySQL versions […]

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