Linux: How to Check PCI Devices with lspci Command

Introduction to lspci

• 💻 The lspci command is used in the Linux terminal to list all devices connected to a PCI bus.
• 💡 This includes devices like graphics cards, network cards, sound cards, and SATA controllers.
• ⚠️ Output may be less detailed on virtual machines compared to a normal system.

Verbose Output Options

• 🔍 Use lspci -v for more detailed information about each PCI device, including driver details and other technical specifications.
• 🚀 For even more in-depth data, useful for hardware debugging or driver support checks, use lspci -vv.

Displaying Vendor and Device IDs

• 🆔 To view vendor and device IDs, use the lspci -nn command.
• 📌 This option displays numerical identifiers alongside device names, aiding in precise identification.

Filtering PCI Device Output

• ⚙️ Combine lspci with pipes (|) and grep to filter the output and find specific types of devices.
• 🔌 Example: Use lspci | grep -i VGA to find graphics controllers.
• 🔌 Example: Use lspci | grep -i USB to list USB controllers.
• 🔌 Example: Use lspci | grep -i network to find network cards (note: this example may not work if no network devices are present).