echo "options iwlwifi debug=0x0" | sudo tee /etc/modprobe.d/iwlwifi-debug.conf sudo update-initramfs -u sudo reboot Then check:
sudo apt update sudo apt install linux-firmware sudo apt upgrade sudo reboot firmware failed to load iwldebugyoyobin free
sudo wget -O /lib/firmware/iwl-debug-yoyo.bin \ https://git.kernel.org/pub/scm/linux/kernel/git/firmware/linux-firmware.git/plain/iwl-debug-yoyo.bin Set correct permissions: echo "options iwlwifi debug=0x0" | sudo tee /etc/modprobe
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