Hi, how can a specific device driver in CentOS 7 be blacklisted, so that it doesn't load at boot time? We have Infiniband adapters which are not completely supported by CentOS and we want to silence the error messages for the time being. I tried with the files /etc/modprobe.d/blacklist /etc/modprobe.d/blacklist.conf and with entries mlx5_core mlx5_ib blacklist mlx5_core blacklist mlx5_ib install mlx5_core /dev/null install mlx5_ib /dev/null all found on different websites. None of these entries helps. mlx5_core and mlx5_ib are still loaded and the system is flooded with error messages. Cheers frank