Linux lspci Guide

Complete beginner-friendly guide to lspci on Linux, covering Arch Linux, CachyOS, and other distributions including listing PCI devices, hardware information, and device detection.

---

Table of Contents

1. Understanding lspci
2. lspci Installation
3. lspci Basics
4. Device Information
5. Troubleshooting

---

Understanding lspci

What is lspci?

lspci lists PCI devices.

Uses:

• List PCI devices: Show PCI/PCIe devices
• Hardware information: Get device details
• Hardware detection: Detect hardware
• Troubleshooting: Troubleshoot hardware

Why it matters:

• Hardware detection: See PCI devices
• Troubleshooting: Debug hardware problems
• Device management: Manage hardware

---

lspci Installation

Install lspci

Arch/CachyOS:

# Install pciutils
sudo pacman -S pciutils

Debian/Ubuntu:

sudo apt install pciutils

Fedora:

sudo dnf install pciutils

---

lspci Basics

List Devices

Basic usage:

# List all PCI devices
lspci

# Shows device list

Verbose Output

Detailed information:

# Verbose output
lspci -v

# -v = verbose (detailed info)

---

Device Information

Kernel Drivers

Show drivers:

# Show kernel drivers
lspci -k

# -k = kernel drivers

Tree View

Hierarchical view:

# Tree format
lspci -t

# Shows PCI bus tree

---

Troubleshooting

lspci Not Found

Check installation:

# Check lspci
which lspci

# Install if missing
sudo pacman -S pciutils

---

Summary

This guide covered lspci usage, PCI device listing, and hardware detection for Arch Linux, CachyOS, and other distributions.

---

Next Steps

• lsusb Guide - List USB devices
• Hardware Detection - Hardware detection
• lspci Documentation: man lspci

---

This guide covers Arch Linux, CachyOS, and other Linux distributions. For distribution-specific details, refer to your distribution's documentation.