sudo pacman -Syu linux-firmware sudo reboot After reboot, check if the error persists:
cat /sys/module/iwlwifi/parameters/debug It should return 0x0 . If you see the exact string iwldebugyoyobin free in your logs (not just iwl-debug-yoyo.bin ), you may have a malicious or corrupt script. Search for it: firmware failed to load iwldebugyoyobin free
A: Yes. It is a warning, not a critical failure. sudo pacman -Syu linux-firmware sudo reboot After reboot,
dmesg | grep "yoyo" You should see no “failed to load” message. If you don’t want to add the debug file and the error is purely cosmetic, you can suppress it by modifying the kernel’s log level for firmware failures. firmware failed to load iwldebugyoyobin free