Are you sure the network is open? Seems to me like it's failing to auth due to 
cached auth data:
#define WLAN_REASON_PREV_AUTH_NOT_VALID 2

Apr  4 15:19:15 ubuntu-gnome NetworkManager[1958]: <info> (wlan0): supplicant 
interface state: completed -> authenticating
Apr  4 15:19:15 ubuntu-gnome kernel: [  131.450269] wlan0: direct probe to 
10:8c:cf:b0:0a:38 (try 1/3)
Apr  4 15:19:15 ubuntu-gnome kernel: [  131.653202] wlan0: direct probe to 
10:8c:cf:b0:0a:38 (try 2/3)
Apr  4 15:19:15 ubuntu-gnome kernel: [  131.857096] wlan0: direct probe to 
10:8c:cf:b0:0a:38 (try 3/3)
Apr  4 15:19:15 ubuntu-gnome kernel: [  132.061008] wlan0: authentication with 
10:8c:cf:b0:0a:38 timed out
Apr  4 15:19:15 ubuntu-gnome NetworkManager[1958]: <info> (wlan0): supplicant 
interface state: authenticating -> disconnected
Apr  4 15:19:15 ubuntu-gnome NetworkManager[1958]: <info> (wlan0): supplicant 
interface state: disconnected -> scanning
Apr  4 15:19:16 ubuntu-gnome wpa_supplicant[2822]: wlan0: SME: Trying to 
authenticate with 10:8c:cf:b0:0a:37 (SSID='IT-ology-Events' freq=5805 MHz)
Apr  4 15:19:16 ubuntu-gnome kernel: [  132.334798] wlan0: deauthenticating 
from 8c:b6:4f:c9:a7:c7 by local choice (reason=2)
Apr  4 15:19:16 ubuntu-gnome kernel: [  132.337091] wlan0: authenticate with 
10:8c:cf:b0:0a:37
Apr  4 15:19:16 ubuntu-gnome kernel: [  132.382996] wlan0: send auth to 
10:8c:cf:b0:0a:37 (try 1/3)
Apr  4 15:19:16 ubuntu-gnome NetworkManager[1958]: <info> (wlan0): supplicant 
interface state: scanning -> authenticating

That said, it seems like there are further issues with connecting;
direct probes fail which may indicate bad signal.

Additionally, you may want to try disabling 11n; which may help:

sudo rmmod iwlwifi
sudo modprobe iwlwifi 11n_disable=1

Or try to change regulatory domain:

sudo iw reg set US

And try to connect again, see if either changes improves the situation.

Thanks!

** Changed in: network-manager (Ubuntu)
       Status: New => Incomplete

** Changed in: network-manager (Ubuntu)
   Importance: Undecided => Medium

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https://bugs.launchpad.net/bugs/1164567

Title:
  Wireless screen doesn't connect to selected wireless network

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