Comment # 4 on bug 900815 from Ludwig Nussel

3.16.7-13.gb834837-desktop doesn't help. It doesn't dump the excessive debug
output like before but there are still hangs.

# hwinfo --wlan
16: PCI 200.0: 0282 WLAN controller                             
  [Created at pci.328]
  Unique ID: qru8.kQy5U_ZUp+C
  Parent ID: z8Q3.SSHIUlJCjvE
  SysFS ID: /devices/pci0000:00/0000:00:1c.0/0000:02:00.0
  SysFS BusID: 0000:02:00.0
  Hardware Class: network
  Model: "Intel Centrino Advanced-N 6235 AGN"
  Vendor: pci 0x8086 "Intel Corporation"
  Device: pci 0x088e "Centrino Advanced-N 6235"
  SubVendor: pci 0x8086 "Intel Corporation"
  SubDevice: pci 0x4060 "Centrino Advanced-N 6235 AGN"
  Revision: 0x24
  Driver: "iwlwifi"
  Driver Modules: "iwlwifi"
  Device File: wlp2s0
  Features: WLAN
  Memory Range: 0xb7000000-0xb7001fff (rw,non-prefetchable)
  IRQ: 45 (no events)
  HW Address: b4:b6:76:48:de:83
  Link detected: yes
  WLAN channels: 1 2 3 4 5 6 7 8 9 10 11 12 13 36 40 44 48 52 56 60 64 100 104
108 112 116 120 124 128 132 136 140
  WLAN frequencies: 2.412 2.417 2.422 2.427 2.432 2.437 2.442 2.447 2.452 2.457
2.462 2.467 2.472 5.18 5.2 5.22 5.24 5.26 5.28 5.3 5.32 5.5 5.52 5.54 5.56 5.58
5.6 5.62 5.64 5.66 5.68 5.7
  WLAN encryption modes: WEP40 WEP104 TKIP CCMP
  WLAN authentication modes: open sharedkey wpa-psk wpa-eap
  Module Alias: "pci:v00008086d0000088Esv00008086sd00004060bc02sc80i00"
  Driver Info #0:
    Driver Status: iwlwifi is active
    Driver Activation Cmd: "modprobe iwlwifi"
  Config Status: cfg=no, avail=yes, need=no, active=unknown
  Attached to: #8 (PCI bridge)