/* SOLVED */
Hi guys, I recently bought a new laptop (Lenovo B575) for school/work and went to put Ubuntu on it. I run it on my desktop which has a wired connection and I've never had any problems. However I seem to be having a bit of trouble getting the wireless to work at all. Even with "Enable Wireless" checked off in Network Manager and my wifi switch turned on, it is still telling me that my wireless is disabled. From what I've gathered from troubleshooting this, my card (Atheros AR9285) has worked on previous versions of Ubuntu, but doesn't seem to play nice with Natty Narwhal for some reason. I have checked the wireless troubleshooting guide as well as scoured the internet to find a solution but have found nothing that has worked. I will post all recommended information as mentioned in http://ubuntuforums.org/showthread.php?p=6183681.
1. Make and Model: Lenovo B575
2. lspci -nn | grep 'Atheros' output:
3. ifconfig and iwconfig output:mark@ubuntu:~$ lspci -nn | grep 'Atheros'
03:00.0 Network controller : Atheros Communications Inc. AR9285 Wireless Network Adapter (PCI-Express) [168c:002b] (rev 01)
4.lsmod | grep "ath9k" output:mark@ubuntu:~$ ifconfig
eth0 Link encap:Ethernet HWaddr f0:de:f1:6d:e7:5c
inet addr:192.168.1.105 Bcast:192.168.1.255 Mask:255.255.255.0
inet6 addr: fe80::f2de:f1ff:fe6d:e75c/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:4996 errors:0 dropped:0 overruns:0 frame:0
TX packets:3591 errors:0 dropped:0 overruns:0 carrier:0
RX bytes:4687716 (4.6 MB) TX bytes:514442 (514.4 KB)
Interrupt:42 Base address:0xa000
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:16 errors:0 dropped:0 overruns:0 frame:0
TX packets:16 errors:0 dropped:0 overruns:0 carrier:0
RX bytes:960 (960.0 B) TX bytes:960 (960.0 B)
lo no wireless extensions.
eth0 no wireless extensions.
wlan0 IEEE 802.11bgn ESSID:off/any
Mode:Managed Access Point: Not-Associated Tx-Power=17 dBm
Retry long limit:7 RTS thr:off Fragment thr:off
5. Will post dmesg on request if necessary.mark@ubuntu:~$ lsmod | grep "ath9k"
ath9k 118238 0
mac80211 294370 1 ath9k
ath9k_common 13851 1 ath9k
ath9k_hw 323077 2 ath9k,ath9k_common
ath 23773 2 ath9k,ath9k_hw
cfg80211 178528 3 ath9k,mac80211,ath
6. sudo lshw -C network output (excluding eth0 which works fine):
7. iwlist scan output:*-network DISABLED
description: Wireless interface
product: AR9285 Wireless Network Adapter (PCI-Express)
vendor: Atheros Communications Inc.
physical id: 0
bus info: pci@0000:03:00.0
logical name: wlan0
width: 64 bits
capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless
configuration: broadcast=yes driver=ath9k driverversion=2.6.38-11-generic firmware=N/A latency=0 link=no multicast=yes wireless=IEEE 802.11bgn
resources: irq:18 memory:e0100000-e010ffff
8. lsb_release -d output:mark@ubuntu:~$ iwlist scan
lo Interface doesn't support scanning.
eth0 Interface doesn't support scanning.
wlan0 Failed to read scan data : Network is down
9. uname -mr output:mark@ubuntu:~$ lsb_release -d
Description: Ubuntu 11.04
10. sudo /etc/init.d/networking restart output:mark@ubuntu:~$ uname -mr
I appreciate any help I can get with this issue. If any more information is needed to help, please ask. Thank you!mark@ubuntu:~$ sudo /etc/init.d/networking restart
* Running /etc/init.d/networking restart is deprecated because it may not enable again some interfaces
* Reconfiguring network interfaces... [ OK ]