exactly the same problem on HP15 204NG. Here infos on my setup:

[code]


########## wireless info START ##########

Report from: 24 Apr 2015 11:51 CEST +0200

Booted last: 24 Apr 2015 11:46 CEST +0200

Script from: 06 Apr 2015 17:23 UTC +0000

##### release ###########################

Distributor ID:	Ubuntu
Description:	Ubuntu 14.04.2 LTS
Release:	14.04
Codename:	trusty

##### kernel ############################

Linux 3.16.0-34-generic #47~14.04.1-Ubuntu SMP Fri Apr 10 17:49:16 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux

Parameters: ro, quiet, splash, vt.handoff=7

##### desktop ###########################

Ubuntu (from ~/.dmrc)

##### lspci #############################

03:00.0 Network controller [0280]: Broadcom Corporation BCM43142 802.11b/g/n [14e4:4365] (rev 01)
	Subsystem: Hewlett-Packard Company Device [103c:2230]
	Kernel driver in use: wl

04:00.0 Ethernet controller [0200]: Realtek Semiconductor Co., Ltd. RTL8101E/RTL8102E PCI Express Fast Ethernet controller [10ec:8136] (rev 07)
	Subsystem: Hewlett-Packard Company Device [103c:22cd]
	Kernel driver in use: r8169

##### lsusb #############################

Bus 002 Device 003: ID 0bda:5776 Realtek Semiconductor Corp. 
Bus 002 Device 002: ID 0438:7900 Advanced Micro Devices, Inc. 
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 001 Device 003: ID 0a5c:216c Broadcom Corp. 
Bus 001 Device 002: ID 0438:7900 Advanced Micro Devices, Inc. 
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 004 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub

##### PCMCIA card info ##################

##### rfkill ############################

0: phy0: Wireless LAN
	Soft blocked: no
	Hard blocked: no
1: brcmwl-0: Wireless LAN
	Soft blocked: no
	Hard blocked: no
2: hci0: Bluetooth
	Soft blocked: no
	Hard blocked: no

##### lsmod #############################

wl                   6367833  0 
hp_wmi                 14109  0 
sparse_keymap          13948  1 hp_wmi
cfg80211              494362  1 wl
wmi                    19193  1 hp_wmi

##### interfaces ########################

auto lo
iface lo inet loopback

##### ifconfig ##########################

eth0      Link encap:Ethernet  HWaddr <MAC 'eth0' [IF]>  
          UP BROADCAST MULTICAST  MTU:1500  Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:0 (0.0 B)  TX bytes:0 (0.0 B)

wlan0     Link encap:Ethernet  HWaddr <MAC 'wlan0' [IF]>  
          inet addr:192.168.0.15  Bcast:192.168.0.255  Mask:255.255.255.0
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:1166 errors:0 dropped:0 overruns:0 frame:2237
          TX packets:1296 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:735033 (735.0 KB)  TX bytes:191196 (191.1 KB)
          Interrupt:36 

##### iwconfig ##########################

eth0      no wireless extensions.

lo        no wireless extensions.

wlan0     IEEE 802.11abg  ESSID:"TPLINKACCESS"  
          Mode:Managed  Frequency:2.437 GHz  Access Point: <MAC 'TPLINKACCESS' [AC1]>   
          Bit Rate=72 Mb/s   Tx-Power=200 dBm   
          Retry short limit:7   RTS thr:off   Fragment thr:off
          Encryption key:off
          Power Management:off
          Link Quality=57/70  Signal level=-53 dBm  
          Rx invalid nwid:0  Rx invalid crypt:0  Rx invalid frag:0
          Tx excessive retries:0  Invalid misc:0   Missed beacon:0

##### route #############################

Kernel IP routing table
Destination     Gateway         Genmask         Flags Metric Ref    Use Iface
0.0.0.0         192.168.0.1     0.0.0.0         UG    0      0        0 wlan0
192.168.0.0     0.0.0.0         255.255.255.0   U     9      0        0 wlan0

##### resolv.conf #######################

nameserver 127.0.1.1
search local

##### NetworkManager info ###############

NetworkManager Tool

State: connected (global)

- Device: <MAC address> ----------------------------------------------------
  Type:              Bluetooth
  Driver:            bluez
  State:             disconnected
  Default:           no

  Capabilities:

- Device: eth0 -----------------------------------------------------------------
  Type:              Wired
  Driver:            r8169
  State:             unavailable
  Default:           no
  HW Address:        <MAC 'eth0' [IF]>

  Capabilities:
    Carrier Detect:  yes

  Wired Properties
    Carrier:         off

- Device: wlan0  [TPLINKACCESS] ------------------------------------------------
  Type:              802.11 WiFi
  Driver:            wl
  State:             connected
  Default:           yes
  HW Address:        <MAC 'wlan0' [IF]>

  Capabilities:
    Speed:           72 Mb/s

  Wireless Properties
    WEP Encryption:  yes
    WPA Encryption:  yes
    WPA2 Encryption: yes

  Wireless Access Points (* = current AP)
    UPC2301519:      Infra, <MAC 'UPC2301519' [AC2]>, Freq 2462 MHz, Rate 54 Mb/s, Strength 20 WPA WPA2
    *TPLINKACCESS:   Infra, <MAC 'TPLINKACCESS' [AC1]>, Freq 2437 MHz, Rate 54 Mb/s, Strength 48 WPA2
    PBS-66934D:      Infra, <MAC 'PBS-66934D' [AN3]>, Freq 2437 MHz, Rate 54 Mb/s, Strength 29 WPA
    UPC2607425:      Infra, <MAC 'UPC2607425' [AN4]>, Freq 2412 MHz, Rate 54 Mb/s, Strength 25 WPA WPA2
    SS-69C419:       Infra, <MAC 'SS-69C419' [AN5]>, Freq 2422 MHz, Rate 54 Mb/s, Strength 2 WPA WPA2
    devolo-bcf2afb1e44e: Infra, <MAC 'devolo-bcf2afb1e44e' [AN6]>, Freq 2437 MHz, Rate 54 Mb/s, Strength 14 WPA2
    PBS-47C681:      Infra, <MAC 'PBS-47C681' [AN7]>, Freq 2422 MHz, Rate 54 Mb/s, Strength 15 WPA
    3WebCube7F34:    Infra, <MAC '3WebCube7F34' [AN8]>, Freq 2412 MHz, Rate 54 Mb/s, Strength 20 WPA2
    UPC016077:       Infra, <MAC 'UPC016077' [AN9]>, Freq 2462 MHz, Rate 54 Mb/s, Strength 22 WPA WPA2
    CIA Security Network: Infra, <MAC 'CIA Security Network' [AN10]>, Freq 2437 MHz, Rate 54 Mb/s, Strength 19 WPA
    NETGEAR75:       Infra, <MAC 'NETGEAR75' [AN11]>, Freq 2462 MHz, Rate 54 Mb/s, Strength 17 WPA2

  IPv4 Settings:
    Address:         192.168.0.15
    Prefix:          24 (255.255.255.0)
    Gateway:         192.168.0.1

    DNS:             192.168.0.1

##### NetworkManager.state ##############

[main]
NetworkingEnabled=true
WirelessEnabled=true
WWANEnabled=true
WimaxEnabled=true

##### NetworkManager.conf ###############

[main]
plugins=ifupdown,keyfile,ofono
dns=dnsmasq

[ifupdown]
managed=false

##### NetworkManager profiles ###########

[[/etc/NetworkManager/system-connections/TPLINKACCESS]] (600 root)
[connection] id=TPLINKACCESS | type=802-11-wireless
[802-11-wireless] ssid=TPLINKACCESS | mac-address=<MAC 'wlan0' [IF]>
[ipv4] method=auto
[ipv6] method=ignore

##### iw reg get ########################

Region: Europe/Berlin (based on set time zone)

country AT:
	(2402 - 2482 @ 40), (N/A, 20)
	(5170 - 5250 @ 40), (N/A, 20)
	(5250 - 5330 @ 40), (N/A, 20), DFS
	(5490 - 5710 @ 40), (N/A, 27), DFS
	(57240 - 65880 @ 2160), (N/A, 40), NO-OUTDOOR

##### iwlist channels ###################

eth0      no frequency information.

lo        no frequency information.

wlan0     32 channels in total; available frequencies :
          Channel 01 : 2.412 GHz
          Channel 02 : 2.417 GHz
          Channel 03 : 2.422 GHz
          Channel 04 : 2.427 GHz
          Channel 05 : 2.432 GHz
          Channel 06 : 2.437 GHz
          Channel 07 : 2.442 GHz
          Channel 08 : 2.447 GHz
          Channel 09 : 2.452 GHz
          Channel 10 : 2.457 GHz
          Channel 11 : 2.462 GHz
          Channel 12 : 2.467 GHz
          Channel 13 : 2.472 GHz
          Channel 36 : 5.18 GHz
          Channel 38 : 5.19 GHz
          Channel 40 : 5.2 GHz
          Channel 42 : 5.21 GHz
          Channel 44 : 5.22 GHz
          Channel 46 : 5.23 GHz
          Channel 48 : 5.24 GHz
          Channel 52 : 5.26 GHz
          Channel 56 : 5.28 GHz
          Channel 60 : 5.3 GHz
          Channel 64 : 5.32 GHz
          Channel 100 : 5.5 GHz
          Channel 104 : 5.52 GHz
          Channel 108 : 5.54 GHz
          Channel 112 : 5.56 GHz
          Channel 116 : 5.58 GHz
          Channel 120 : 5.6 GHz
          Channel 124 : 5.62 GHz
          Channel 128 : 5.64 GHz
          Current Frequency:2.437 GHz (Channel 6)

##### iwlist scan #######################

Channel occupancy:

      1   APs on   Frequency:2.437 GHz (Channel 6)
      1   APs on   Frequency:2.462 GHz (Channel 11)

eth0      Interface doesn't support scanning.

wlan0     Scan completed :
          Cell 01 - Address: <MAC 'TPLINKACCESS' [AC1]>
                    Channel:6
                    Frequency:2.437 GHz (Channel 6)
                    Quality=38/70  Signal level=-72 dBm  
                    Encryption key:on
                    ESSID:"TPLINKACCESS"
                    Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 6 Mb/s
                              9 Mb/s; 12 Mb/s; 18 Mb/s
                    Bit Rates:24 Mb/s; 36 Mb/s; 48 Mb/s; 54 Mb/s
                    Mode:Master
                    Extra:tsf=0000000000000000
                    Extra: Last beacon: 44ms ago
                    IE: IEEE 802.11i/WPA2 Version 1
                        Group Cipher : CCMP
                        Pairwise Ciphers (1) : CCMP
                        Authentication Suites (1) : PSK
          Cell 02 - Address: <MAC 'UPC2301519' [AC2]>
                    Channel:11
                    Frequency:2.462 GHz (Channel 11)
                    Quality=21/70  Signal level=-89 dBm  
                    Encryption key:on
                    ESSID:"UPC2301519"
                    Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 6 Mb/s
                              9 Mb/s; 12 Mb/s; 18 Mb/s
                    Bit Rates:24 Mb/s; 36 Mb/s; 48 Mb/s; 54 Mb/s
                    Mode:Master
                    Extra:tsf=0000000000000000
                    Extra: Last beacon: 44ms ago
                    IE: IEEE 802.11i/WPA2 Version 1
                        Group Cipher : TKIP
                        Pairwise Ciphers (2) : CCMP TKIP
                        Authentication Suites (1) : PSK
                    IE: WPA Version 1
                        Group Cipher : TKIP
                        Pairwise Ciphers (2) : CCMP TKIP
                        Authentication Suites (1) : PSK

0C5541415034333035323438331054000800060050F2040001101100074556573332323610080002200C103C0001011049000600372A000120

##### module infos ######################

[wl]
filename:       /lib/modules/3.16.0-34-generic/updates/dkms/wl.ko
license:        MIXED/Proprietary
srcversion:     9A49255BA90267D99664757
depends:        cfg80211
vermagic:       3.16.0-34-generic SMP mod_unload modversions 
parm:           passivemode:int
parm:           wl_txq_thresh:int
parm:           oneonly:int
parm:           piomode:int
parm:           instance_base:int
parm:           nompc:int
parm:           intf_name:string

[cfg80211]
filename:       /lib/modules/3.16.0-34-generic/kernel/net/wireless/cfg80211.ko
description:    wireless configuration support
license:        GPL
author:         Johannes Berg
srcversion:     4A525D9D32B0C6D120CA547
depends:        
intree:         Y
vermagic:       3.16.0-34-generic SMP mod_unload modversions 
signer:         Magrathea: Glacier signing key
sig_key:        80:21:14:84:DC:DA:08:06:05:39:31:B7:EE:AA:DE:22:EA:7E:C2:62
sig_hashalgo:   sha512
parm:           ieee80211_regdom:IEEE 802.11 regulatory domain code (charp)
parm:           cfg80211_disable_40mhz_24ghz:Disable 40MHz support in the 2.4GHz band (bool)

##### module parameters #################

[cfg80211]
cfg80211_disable_40mhz_24ghz: N
ieee80211_regdom: 00

##### /etc/modules ######################

lp
rtc

##### modprobe options ##################

[/etc/modprobe.d/blacklist-ath_pci.conf]
blacklist ath_pci

[/etc/modprobe.d/blacklist-bcm43.conf]
blacklist b43
blacklist b43legacy
blacklist ssb
blacklist bcm43xx
blacklist brcm80211
blacklist brcmfmac
blacklist brcmsmac
blacklist bcma

[/etc/modprobe.d/blacklist.conf]
blacklist evbug
blacklist usbmouse
blacklist usbkbd
blacklist eepro100
blacklist de4x5
blacklist eth1394
blacklist snd_intel8x0m
blacklist snd_aw2
blacklist i2c_i801
blacklist prism54
blacklist bcm43xx
blacklist garmin_gps
blacklist asus_acpi
blacklist snd_pcsp
blacklist pcspkr
blacklist amd76x_edac

[/etc/modprobe.d/blacklist-rare-network.conf]
alias net-pf-3 off
alias net-pf-6 off
alias net-pf-9 off
alias net-pf-11 off
alias net-pf-12 off
alias net-pf-19 off
alias net-pf-21 off
alias net-pf-36 off

[/etc/modprobe.d/iwlwifi.conf]
remove iwlwifi \
(/sbin/lsmod | grep -o -e ^iwlmvm -e ^iwldvm -e ^iwlwifi | xargs /sbin/rmmod) \
&& /sbin/modprobe -r mac80211

[/etc/modprobe.d/mlx4.conf]
softdep mlx4_core post: mlx4_en

[/etc/modprobe.d/modesetting.conf]
options cirrus modeset=1
options mgag200 modeset=1

##### rc.local ##########################

exit 0

##### pm-utils ##########################

##### udev rules ########################

[/etc/udev/rules.d/70-persistent-net.rules]
# PCI device 0x10ec:0x8136 (r8169)
SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="<MAC 'eth0' [IF]>", ATTR{dev_id}=="0x0", ATTR{type}=="1", KERNEL=="eth*", NAME="eth0"
# PCI device 0x14e4:0x4365 (wl)
SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="<MAC 'wlan0' [IF]>", ATTR{dev_id}=="0x0", ATTR{type}=="1", KERNEL=="wlan*", NAME="wlan0"

##### dmesg #############################

[   13.995522] wlan0: Broadcom BCM4365 802.11 Hybrid Wireless Controller 6.30.223.248 (r487574)
[   14.854537] Bluetooth: hci0: BCM: firmware hci_ver=06 hci_rev=00e7 lmp_ver=06 lmp_subver=210b

########## wireless info END ############

[/code]