WPI Wireless on FreeBSD

Wireless can be a pain on FreeBSD. Using an EAP-TLS network, such as the one provided at WPI, can be even more challenging.

Fortunately, the configuration process isn’t as painful as it may seem. Here’s how to get it working:

  1. Download the certificates from http://wpi-wireless-setup.wpi.edu. You may want to do this on another machine.

  2. Copy your CA certificate and user certificate (private key) to a location of your choosing.

  3. Login as root (su) and open your favorite editor, such as vim.

  4. Edit /etc/wpa_supplicant.conf

       group=CCMP TKIP
  5. Connect to the network: service netif restart

  6. Voila – success!

Note: You may need to include a user_cert, as well. WPI-Wireless does not require this.

[60Hz] How to get Dell U3415W to work with Intel 5500 Graphics / ThinkPad T450s

To get 60Hz to work with your Dell U3415W from a system that only supports SST at 4K (ThinkPad T450s / Intel 5500), all you need to do is:

1. Press one of the “soft” buttons on the bottom right of the display.
2. Select the “Menu” icon (3rd option from the left).
3. Navigate to “Display”.
4. Navigate to “DP 1.2” and select “Disable”.
5. The monitor will then reset, and all will be working with your monitor at 60Hz at full resolution.

Caveat: if you’re planning on daisy-chaining your monitors (i.e. connecting a second or third monitor through your U3415W), changing this setting will completely break this functionality. Multi-Stream Transport (MST) support is required for this to work and currently the Intel 5500 chipset / drivers (not sure which) do not support MST.