Acer C7 Chromebook No Wireless Access

[Cero121]

Hi, I have an Acer C7 Chromebook, which I dual-booted with Ubuntu 12.04. Everything works, but when I try to using a wireless connecion, there is no internet access. If I try to connect with an Ethernet cable, the internet works perfectly. Does anyone have the same problem? Has anyone solved it? Please reply! Thanks in advance.

[praseodym]

Please open a terminal with CTRL+ALT+T and show the outputs of these commands without the cable being plugged:


uname -a
lspci -nnk | grep -iA2 net
lsusb
lsmod
iwconfig
ifconfig -a
cat /etc/resolv.conf
route -n

[Cero121]

uname -a: Linux ChrUbuntu 3.4.0 #1 SMP Sun Aug 26 19:17:55 EDT 2012 x86_64 x86_64 x86_64 GNU/Linux




lspci -nnk | grep -iA2 net:


01:00.0 Network controller [0280]: Atheros Communications Inc. AR9462 Wireless Network Adapter [168c:0034] (rev 01)
Subsystem: Foxconn International, Inc. Device [105b:e052]
Kernel driver in use: ath9k
--
02:00.0 Ethernet controller [0200]: Broadcom Corporation NetLink BCM57785 Gigabit Ethernet PCIe [14e4:16b5] (rev 10)
Subsystem: Acer Incorporated [ALI] Device [1025:0742]
Kernel driver in use: tg3
--
02:00.1 SD Host controller [0805]: Broadcom Corporation NetXtreme BCM57765 Memory Card Reader [14e4:16bc] (rev 10)
Subsystem: Acer Incorporated [ALI] Device [1025:0742]
Kernel driver in use: sdhci-pci




lsusb: Bus 001 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub
Bus 002 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 001 Device 003: ID 0489:e04e Foxconn / Hon Hai
Bus 001 Device 004: ID 04f2:b336 Chicony Electronics Co., Ltd




lsmod: Module Size Used by
fuse 59885 2
rfcomm 25259 0
snd_hda_codec_hdmi 29062 1
snd_hda_codec_realtek 49177 1
memconsole 12352 0
uvcvideo 59368 0
videodev 81368 1 uvcvideo
videobuf2_core 25280 1 uvcvideo
joydev 16409 0
videobuf2_vmalloc 12313 1 uvcvideo
videobuf2_memops 12475 1 videobuf2_vmalloc
btusb 16409 0
bluetooth 143138 13 rfcomm,btusb
ath9k 118119 0
mac80211 318094 1 ath9k
ath9k_common 12689 1 ath9k
ath9k_hw 351731 2 ath9k,ath9k_common
ath 21105 3 ath9k,ath9k_common,ath9k_hw
rtc_cmos 16409 0
cfg80211 141223 3 ath9k,mac80211,ath
snd_hda_intel 24601 3
snd_hda_codec 71435 3 snd_hda_codec_hdmi,snd_hda_codec_realtek,snd_hda_i ntel
snd_hwdep 12351 1 snd_hda_codec
sdhci_pci 16409 0
snd_pcm 61468 3 snd_hda_codec_hdmi,snd_hda_intel,snd_hda_codec
sdhci 25037 1 sdhci_pci
mmc_core 71579 2 sdhci_pci,sdhci
tg3 118809 0
snd_timer 21055 1 snd_pcm
snd_page_alloc 12757 2 snd_hda_intel,snd_pcm
nm10_gpio 12313 0






iwconfig: eth1 no wireless extensions.


lo no wireless extensions.


wlan0 IEEE 802.11abgn ESSID:"wireless"
Mode:Managed Frequency:2.437 GHz Access Point: 00:22:3F:7A:74:3B
Bit Rate=1 Mb/s Tx-Power=19 dBm
Retry long limit:7 RTS thr:off Fragment thr:off
Power Management:on
Link Quality=70/70 Signal level=-30 dBm
Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
Tx excessive retries:7 Invalid misc:25 Missed beacon:0




ifconfig -a: eth1 Link encap:Ethernet HWaddr 20:89:84:bd:ef:5e
inet6 addr: fe80::2289:84ff:febd:ef5e/64 Scope:Link
UP BROADCAST MULTICAST MTU:1500 Metric:1
RX packets:5717 errors:0 dropped:0 overruns:0 frame:0
TX packets:4416 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:5777537 (5.7 MB) TX bytes:779978 (779.9 KB)
Interrupt:18


lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
inet6 addr: ::1/128 Scope:Host
UP LOOPBACK RUNNING MTU:16436 Metric:1
RX packets:1020 errors:0 dropped:0 overruns:0 frame:0
TX packets:1020 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:88396 (88.3 KB) TX bytes:88396 (88.3 KB)


wlan0 Link encap:Ethernet HWaddr bc:85:56:38:f9:87
inet6 addr: fe80::be85:56ff:fe38:f987/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:146 errors:0 dropped:0 overruns:0 frame:0
TX packets:332 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:23089 (23.0 KB) TX bytes:80654 (80.6 KB)




cat /etc/resolv.conf: # Dynamic resolv.conf(5) file for glibc resolver(3) generated by resolvconf(8)
# DO NOT EDIT THIS FILE BY HAND -- YOUR CHANGES WILL BE OVERWRITTEN
nameserver 127.0.0.1






route -n: Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface

[praseodym]

Deactivate the power management and the hardware encryption:


echo "options ath9k nohwcrypt=1" | sudo tee /etc/modprobe.d/ath9k.conf
sudo modprobe -rfv ath9k
sudo modprobe -v ath9k
sudo iwconfig wlan0 power off

[Cero121]

Thank you soooo much! It worked!