One of the password guess that Virgil makes is "blackmesasucks".
If you let Virgil “stare at the Wi-Fi nodes” long enough, he does actually unlock the door.
The track played during this chamber is called Natural Light.
There is a way to shoot a portal from the room behind the emancipation grids and goo pit to the raised platform with the laser, by crouching on the button that deactivates the grid, and looking at the collapsed wall. There should be a few pixels of portal surface showing. This can make the test a lot easier.
