The error message "firmware: failed to load iwl-debug-yoyo.bin (-2)" is a common, though usually harmless, warning seen in Linux system logs ( dmesg ). It typically appears on systems using Intel wireless cards (handled by the iwlwifi driver) when the kernel tries and fails to locate an optional debugging file.
The firmware might be available through your distribution's package repositories.
Reboot.
Below are several free, open-source methods to resolve this error. Start with Method 1 and work downwards.
Open a terminal and run the following commands to diagnose the issue:
Open a terminal and create a new modprobe configuration file: sudo nano /etc/modprobe.d/iwlwifi.conf Use code with caution. Copied to clipboard Add the following line
The "failed to load iwl-debug-yoyo.bin" message will no longer appear in your boot logs. Scenario 2: Wi-Fi Is Dead (Real Underlying Errors)
It is rarely, if ever, provided by Linux distributions because regular users do not need it for their hardware to function. Harmless Warning:
: This prefix stands for Intel Wireless . It indicates that the log message is generated by Intel's official wireless LAN drivers for Linux.
Here is a helpful guide on why this happens and how to fix it.
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Marian van der Kruijt, The Netherlands