user@A ~ $ sudo -i
[sudo] password for user: 
A ~ # cd /etc/modprobe.d
A modprobe.d # ls
alsa-base.conf              blacklist-modem.conf         fbdev-blacklist.conf
blacklist-ath_pci.conf      blacklist-oss.conf           iwlwifi.conf
blacklist.conf              blacklist-rare-network.conf  mlx4.conf
blacklist-firewire.conf     blacklist-watchdog.conf      options.conf 
blacklist-framebuffer.conf  dkms.conf                    vmwgfx-fbdev.conf
A modprobe.d # 
