Re: How can I disable my laptop's internal wireless adapter?
The strict answer to your question is to determine what the driver is from the terminal:
It will report something like:
sudo lshw -C network
Then blacklist what you found:
description: Wireless interface
product: Centrino Advanced-N 6200
vendor: Intel Corporation
physical id: 0
bus info: pci@0000:03:00.0
logical name: wlan0
width: 64 bits
capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless
configuration: broadcast=yes driver=iwlwifi
driverversion=3.11.0-18-generic firmware=184.108.40.206 build 25532 ip=192.168.1.100 latency=0 link=yes multicast=yes wireless=IEEE 802.11abgn
resources: irq:42 memory:f2400000-f2401fff
Of course, substitute your details here. Reboot and you'll be all set.
echo "blacklist iwlwifi" >> /etc/modprobe.d/blacklist.conf
The real answer is to troubleshoot the internal device and see if we can fix it. If you'd like to do so, tell us the information you found from above.
"Oh, Ubuntu, you are my favorite Linux-based operating system" --Dr. Sheldon Cooper, Ph.D.