[ubuntu] wifi coects, but no internet - qualcomm atheros ar928x

hello, as mentioned in the title, i caot get inteet access when coected through wifi. etheet works fine, though. the wifi works also on several android and windows machines in our household. so there is no issue with that.
any help appreciated.
regards fabian

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

Report from: 21 Mar 2016 23:13 CET +0100

Booted last: 21 Mar 2016 23:03 CET +0100

Script from: 27 Sep 2015 00:34 UTC +0000

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

Distributor ID: Ubuntu
Description: Ubuntu 14.04.4 LTS
Release: 14.04
Codename: trusty

##### keel ############################

Linux 4.2.0-34-generic #39~14.04.1-Ubuntu SMP Fri Mar 11 11:38:02 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux

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

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

Ubuntu

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

00:04.0 Etheet controller [0200]: Silicon Integrated Systems [SiS] 191 Gigabit Etheet Adapter [1039:0191] (rev 02)
Subsystem: ASUSTeK Computer Inc. Device [1043:1815]
Keel driver in use: sis190

02:00.0 Network controller [0280]: Qualcomm Atheros AR928X Wireless Network Adapter (PCI-Express) [168c:002a] (rev 01)
Subsystem: AzureWave AW-NE771 802.11bgn Wireless Mini PCIe Card [AR9281] [1a3b:1067]
Keel driver in use: ath9k

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

Bus 001 Device 003: ID 0bda:0116 Realtek Semiconductor Corp. RTS5116 Card Reader Controller
Bus 001 Device 002: ID 04f2:b012 Chicony Electronics Co., Ltd 1.3 MPixel UVC Webcam
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub

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

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

0: phy0: Wireless LAN
Soft blocked: no
Hard blocked: no

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

ath9k 143360 0
ath9k_common 36864 1 ath9k
ath9k_hw 466944 2 ath9k_common,ath9k
ath 32768 3 ath9k_common,ath9k,ath9k_hw
mac80211 729088 1 ath9k
cfg80211 540672 4 ath,ath9k_common,ath9k,mac80211

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

auto lo
iface lo inet loopback

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

eth0 Link encap:Etheet HWaddr <MAC 'eth0' [IF]>
inet addr:192.168.2.2 Bcast:192.168.2.255 Mask:255.255.255.0
inet6 addr: fe80::<IP6 'eth0' [IF]>/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:11887 errors:0 dropped:0 overruns:0 frame:0
TX packets:11132 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:9391809 (9.3 MB) TX bytes:1453914 (1.4 MB)

wlan0 Link encap:Etheet HWaddr <MAC 'wlan0' [IF]>
inet addr:192.168.2.67 Bcast:192.168.2.255 Mask:255.255.255.0
inet6 addr: fe80::<IP6 'wlan0' [IF]>/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:2669 errors:0 dropped:1 overruns:0 frame:0
TX packets:224 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:664711 (664.7 KB) TX bytes:27152 (27.1 KB)

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

eth0 no wireless extensions.

lo no wireless extensions.

wlan0 IEEE 802.11bgn ESSID:"Kommune Kabel Zwei"
Mode:Managed Frequency:2.437 GHz Access Point: <MAC 'Kommune Kabel Zwei' [AC1]>
Bit Rate=1 Mb/s Tx-Power=17 dBm

Retry short limit:7   RTS thr:off   Fragment thr:off

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

Keel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
0.0.0.0 192.168.2.1 0.0.0.0 UG 0 0 0 eth0
192.168.2.0 0.0.0.0 255.255.255.0 U 1 0 0 eth0
192.168.2.0 0.0.0.0 255.255.255.0 U 9 0 0 wlan0

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

nameserver 127.0.1.1
search Belkin

##### network managers ##################

Installed:

NetworkManager

Ruing:

root 750 1 0 23:03 ? 00:00:00 NetworkManager

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

NetworkManager Tool

State: coected (global)

- Device: wlan0 [Kommune Kabel Zwei] ------------------------------------------
Type: 802.11 WiFi
Driver: ath9k
State: coected
Default: no
HW Address: <MAC 'wlan0' [IF]>

Capabilities:
Speed: 1 Mb/s

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

Wireless Access Points (* = current AP)
EasyBox-790078: Infra, <MAC 'EasyBox-790078' [AC4]>, Freq 2462 MHz, Rate 54 Mb/s, Strength 50 WPA WPA2
FRITZ!Box 7490: Infra, <MAC 'FRITZ!Box 7490' [AC2]>, Freq 2462 MHz, Rate 54 Mb/s, Strength 44 WPA2
EasyBox-B87537: Infra, <MAC 'EasyBox-B87537' [AN3]>, Freq 2412 MHz, Rate 54 Mb/s, Strength 17 WPA WPA2
FRITZ!Box 7490: Infra, <MAC 'FRITZ!Box 7490' [AN4]>, Freq 2412 MHz, Rate 54 Mb/s, Strength 29 WPA2
EasyBox-1C6526: Infra, <MAC 'EasyBox-1C6526' [AN5]>, Freq 2427 MHz, Rate 54 Mb/s, Strength 20 WPA WPA2
Kommune Kabel Zwei: Infra, <MAC 'Kommune Kabel Zwei' [AC3]>, Freq 2437 MHz, Rate 54 Mb/s, Strength 42 WPA WPA2
*Kommune Kabel Zwei: Infra, <MAC 'Kommune Kabel Zwei' [AC1]>, Freq 2437 MHz, Rate 54 Mb/s, Strength 81 WPA WPA2
FRITZ!Box 7272: Infra, <MAC 'FRITZ!Box 7272' [AN8]>, Freq 2412 MHz, Rate 54 Mb/s, Strength 19 WPA2
o2-WLAN32: Infra, <MAC 'o2-WLAN32' [AN9]>, Freq 2442 MHz, Rate 54 Mb/s, Strength 17 WPA2
FRITZ!Box 7362 SL: Infra, <MAC 'FRITZ!Box 7362 SL' [AN10]>, Freq 2412 MHz, Rate 54 Mb/s, Strength 27 WPA2

IPv4 Settings:
Address: 192.168.2.67
Prefix: 24 (255.255.255.0)
Gateway: 192.168.2.1

DNS: 192.168.2.1

- Device: eth0 [Wired coection 1] -------------------------------------------
Type: Wired
Driver: sis190
State: coected
Default: yes
HW Address: <MAC 'eth0' [IF]>

Capabilities:
Carrier Detect: yes
Speed: 100 Mb/s

Wired Properties
Carrier: on

IPv4 Settings:
Address: 192.168.2.2
Prefix: 24 (255.255.255.0)
Gateway: 192.168.2.1

DNS: 192.168.2.1

##### 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-coections/Kommune Kabel Zwei]] (600 root)
[coection] id=Kommune Kabel Zwei | type=802-11-wireless
[802-11-wireless] ssid=Kommune Kabel Zwei | mac-address=<MAC 'wlan0' [IF]>
[ipv4] method=auto
[ipv6] method=auto

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

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

country US:
(2402 - 2472 @ 40), (3, 27)
(5170 - 5250 @ 40), (3, 17)
(5250 - 5330 @ 40), (3, 20), DFS
(5490 - 5600 @ 40), (3, 20), DFS
(5650 - 5710 @ 40), (3, 20), DFS
(5735 - 5835 @ 40), (3, 30)
(57240 - 63720 @ 2160), (N/A, 40)

##### iwlist chaels ###################

eth0 no frequency information.

lo no frequency information.

wlan0 11 chaels in total; available frequencies :
Chael 01 : 2.412 GHz
Chael 02 : 2.417 GHz
Chael 03 : 2.422 GHz
Chael 04 : 2.427 GHz
Chael 05 : 2.432 GHz
Chael 06 : 2.437 GHz
Chael 07 : 2.442 GHz
Chael 08 : 2.447 GHz
Chael 09 : 2.452 GHz
Chael 10 : 2.457 GHz
Chael 11 : 2.462 GHz
Current Frequency:2.437 GHz (Chael 6)

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

eth0 Interface doesn't support scaing.

lo Interface doesn't support scaing.

Chael occupancy:

1 APs on Frequency:2.412 GHz (Chael 1)
2 APs on Frequency:2.437 GHz (Chael 6)
1 APs on Frequency:2.462 GHz (Chael 11)

wlan0 Scan completed :
Cell 01 - Address: <MAC 'Kommune Kabel Zwei' [AC1]>
Chael:6
Frequency:2.437 GHz (Chael 6)
Quality=70/70 Signal level=-40 dBm
Encryption key:on
ESSID:"Kommune Kabel Zwei"
Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 9 Mb/s
18 Mb/s; 36 Mb/s; 54 Mb/s
Bit Rates:6 Mb/s; 12 Mb/s; 24 Mb/s; 48 Mb/s
Mode:Master
Extra:tsf=0000000df545ee8a
Extra: Last beacon: 64ms ago
IE: WPA Version 1
Group Cipher : TKIP
Pairwise Ciphers (2) : TKIP CCMP
Authentication Suites (1) : PSK
IE: IEEE 802.11i/WPA2 Version 1
Group Cipher : TKIP
Pairwise Ciphers (2) : TKIP CCMP
Authentication Suites (1) : PSK
Cell 02 - Address: <MAC 'FRITZ!Box 7490' [AC2]>
Chael:1
Frequency:2.412 GHz (Chael 1)
Quality=25/70 Signal level=-85 dBm
Encryption key:on
ESSID:"FRITZ!Box 7490"
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=00000000066bc9c8
Extra: Last beacon: 1712ms ago
IE: IEEE 802.11i/WPA2 Version 1
Group Cipher : CCMP
Pairwise Ciphers (1) : CCMP
Authentication Suites (1) : PSK
Cell 03 - Address: <MAC 'Kommune Kabel Zwei' [AC3]>
Chael:6
Frequency:2.437 GHz (Chael 6)
Quality=36/70 Signal level=-74 dBm
Encryption key:on
ESSID:"Kommune Kabel Zwei"
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=00000009b9dc1e6b
Extra: Last beacon: 64ms 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
Cell 04 - Address: <MAC 'EasyBox-790078' [AC4]>
Chael:11
Frequency:2.462 GHz (Chael 11)
Quality=35/70 Signal level=-75 dBm
Encryption key:on
ESSID:"EasyBox-790078"
Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 18 Mb/s
24 Mb/s; 36 Mb/s; 54 Mb/s
Bit Rates:6 Mb/s; 9 Mb/s; 12 Mb/s; 48 Mb/s
Mode:Master
Extra:tsf=0000003f9d6b26a4
Extra: Last beacon: 64ms 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

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

[ath9k]
filename: /lib/modules/4.2.0-34-generic/keel/drivers/net/wireless/ath/ath9k/ath9k.ko
license: Dual BSD/GPL
description: Support for Atheros 802.11n wireless LAN cards.
author: Atheros Communications
srcversion: 681B59FC4C4EB63D7B98108
depends: ath9k_hw,mac80211,ath9k_common,cfg80211,ath
intree: Y
vermagic: 4.2.0-34-generic SMP mod_unload modversions
signer: Build time autogenerated keel key
sig_key: D4:AC:CB:BD:31:2B:A9:DF:31:75:37:B8:F5:87:03:49:6C :E2:E7:C8
sig_hashalgo: sha512
parm: debug:Debugging mask (uint)
parm: nohwcrypt:Disable hardware encryption (int)
parm: blink:Enable LED blink on activity (int)
parm: btcoex_enable:Enable wifi-BT coexistence (int)
parm: bt_ant_diversity:Enable WLAN/BT RX antea diversity (int)
parm: ps_enable:Enable WLAN PowerSave (int)
parm: use_chanctx:Enable chael context for concurrency (int)

[ath9k_common]
filename: /lib/modules/4.2.0-34-generic/keel/drivers/net/wireless/ath/ath9k/ath9k_common.ko
license: Dual BSD/GPL
description: Shared library for Atheros wireless 802.11n LAN cards.
author: Atheros Communications
srcversion: 619327754B562F78060585E
depends: ath9k_hw,cfg80211,ath
intree: Y
vermagic: 4.2.0-34-generic SMP mod_unload modversions
signer: Build time autogenerated keel key
sig_key: D4:AC:CB:BD:31:2B:A9:DF:31:75:37:B8:F5:87:03:49:6C :E2:E7:C8
sig_hashalgo: sha512

[ath9k_hw]
filename: /lib/modules/4.2.0-34-generic/keel/drivers/net/wireless/ath/ath9k/ath9k_hw.ko
license: Dual BSD/GPL
description: Support for Atheros 802.11n wireless LAN cards.
author: Atheros Communications
srcversion: F987BF2735D3EF13C4E4E3D
depends: ath
intree: Y
vermagic: 4.2.0-34-generic SMP mod_unload modversions
signer: Build time autogenerated keel key
sig_key: D4:AC:CB:BD:31:2B:A9:DF:31:75:37:B8:F5:87:03:49:6C :E2:E7:C8
sig_hashalgo: sha512

[ath]
filename: /lib/modules/4.2.0-34-generic/keel/drivers/net/wireless/ath/ath.ko
license: Dual BSD/GPL
description: Shared library for Atheros wireless LAN cards.
author: Atheros Communications
srcversion: F1417AD8012BEEF1598B307
depends: cfg80211
intree: Y
vermagic: 4.2.0-34-generic SMP mod_unload modversions
signer: Build time autogenerated keel key
sig_key: D4:AC:CB:BD:31:2B:A9:DF:31:75:37:B8:F5:87:03:49:6C :E2:E7:C8
sig_hashalgo: sha512

[mac80211]
filename: /lib/modules/4.2.0-34-generic/keel/net/mac80211/mac80211.ko
license: GPL
description: IEEE 802.11 subsystem
srcversion: 292BCC26A10EA884DF6B5FF
depends: cfg80211
intree: Y
vermagic: 4.2.0-34-generic SMP mod_unload modversions
signer: Build time autogenerated keel key
sig_key: D4:AC:CB:BD:31:2B:A9:DF:31:75:37:B8:F5:87:03:49:6C :E2:E7:C8
sig_hashalgo: sha512
parm: minstrel_vht_only:Use only VHT rates when VHT is supported by sta. (bool)
parm: max_nullfunc_tries:Maximum nullfunc tx tries before discoecting (reason 4). (int)
parm: max_probe_tries:Maximum probe tries before discoecting (reason 4). (int)
parm: beacon_loss_count:Number of beacon intervals before we decide beacon was lost. (int)
parm: probe_wait_ms:Maximum time(ms) to wait for probe response before discoecting (reason 4). (int)
parm: ieee80211_default_rc_algo:Default rate control algorithm for mac80211 to use (charp)

[cfg80211]
filename: /lib/modules/4.2.0-34-generic/keel/net/wireless/cfg80211.ko
description: wireless configuration support
license: GPL
author: Johaes Berg
srcversion: 7982686FBE8064A87E02753
depends:
intree: Y
vermagic: 4.2.0-34-generic SMP mod_unload modversions
signer: Build time autogenerated keel key
sig_key: D4:AC:CB:BD:31:2B:A9:DF:31:75:37:B8:F5:87:03:49:6C :E2:E7:C8
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 #################

[ath9k]
blink: 0
bt_ant_diversity: 0
btcoex_enable: 0
nohwcrypt: 0
ps_enable: 0
use_chanctx: 0

[mac80211]
beacon_loss_count: 7
ieee80211_default_rc_algo: minstrel_ht
max_nullfunc_tries: 2
max_probe_tries: 5
minstrel_vht_only: Y
probe_wait_ms: 500

[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.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

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

exit 0

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

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

[/etc/udev/rules.d/70-persistent-net.rules]
# PCI device 0x1039:0x0191 (sis190)
SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="<MAC 'eth0' [IF]>", ATTR{dev_id}=="0x0", ATTR{type}=="1", KERNEL=="eth*", NAME="eth0"
# PCI device 0x168c:0x002a (ath9k)
SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="<MAC 'wlan0' [IF]>", ATTR{dev_id}=="0x0", ATTR{type}=="1", KERNEL=="wlan*", NAME="wlan0"

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

[ 17.955638] IPv6: ADDRCONF(NETDEV_UP): eth0: link is not ready
[ 17.972631] IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready
[ 19.981032] wlan0: authenticate with <MAC 'Kommune Kabel Zwei' [AC1]>
[ 20.001116] wlan0: send auth to <MAC 'Kommune Kabel Zwei' [AC1]> (try 1/3)
[ 20.003842] wlan0: authenticated
[ 20.008066] wlan0: associate with <MAC 'Kommune Kabel Zwei' [AC1]> (try 1/3)
[ 20.011884] wlan0: RX AssocResp from <MAC 'Kommune Kabel Zwei' [AC1]> (capab=0x411 status=0 aid=6)
[ 20.012030] wlan0: associated
[ 20.012086] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready
[ 20.016680] ath: EEPROM regdomain: 0x8348
[ 20.016684] ath: EEPROM indicates we should expect a country code
[ 20.016687] ath: doing EEPROM country->regdmn map search
[ 20.016689] ath: country maps to regdmn code: 0x3a
[ 20.016691] ath: Country alpha2 being used: US
[ 20.016692] ath: Regpair used: 0x3a
[ 20.016694] ath: regdomain 0x8348 dynamically updated by country IE
[ 20.070423] wlan0: deauthenticating from <MAC 'Kommune Kabel Zwei' [AC1]> by local choice (Reason: 2=PREV_AUTH_NOT_VALID)
[ 20.078825] wlan0: authenticate with <MAC 'Kommune Kabel Zwei' [AC1]>
[ 20.093012] wlan0: send auth to <MAC 'Kommune Kabel Zwei' [AC1]> (try 1/3)
[ 20.094892] wlan0: authenticated
[ 20.100046] wlan0: associate with <MAC 'Kommune Kabel Zwei' [AC1]> (try 1/3)
[ 20.103818] wlan0: RX AssocResp from <MAC 'Kommune Kabel Zwei' [AC1]> (capab=0x411 status=0 aid=6)
[ 20.103921] wlan0: associated
[ 20.107647] ath: EEPROM regdomain: 0x8348
[ 20.107652] ath: EEPROM indicates we should expect a country code
[ 20.107654] ath: doing EEPROM country->regdmn map search
[ 20.107656] ath: country maps to regdmn code: 0x3a
[ 20.107658] ath: Country alpha2 being used: US
[ 20.107660] ath: Regpair used: 0x3a
[ 20.107662] ath: regdomain 0x8348 dynamically updated by country IE
[ 28.000051] sis190 0000:00:04.0 eth0: mii ext = 0000
[ 28.024065] sis190 0000:00:04.0 eth0: mii lpa=41e1 adv=01e1 exp=0007
[ 28.024073] sis190 0000:00:04.0 eth0: link on 100 Mbps Full Duplex mode
[ 28.024097] IPv6: ADDRCONF(NETDEV_CHANGE): eth0: link becomes ready
[ 235.320055] sis190 0000:00:04.0 eth0: auto-negotiating...
[ 285.572061] sis190 0000:00:04.0 eth0: mii ext = 0000
[ 285.604051] sis190 0000:00:04.0 eth0: mii lpa=41e1 adv=01e1 exp=0007
[ 285.604060] sis190 0000:00:04.0 eth0: link on 100 Mbps Full Duplex mode

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