If your laptop has an Intel 8260 wireless adapter and you have upgraded to the 4.12 kernel, your wifi probably isn’t working anymore. This is because the minimum firmware API version has been updated to 22 in a recent commit to the Intel 8000 series driver source code (in iwl-8000.c): /* Lowest firmware API versionRead more about Intel 8260 Wireless with Kernel 4.12[…]