Some extra info:
lsusb:
Bus 002 Device 003: ID 0cf3:7015 Atheros Communications, Inc. TP-Link TL-WN821N
v3 802.11n [Atheros AR7010+AR9287]
lshw:
*-network
description: Wireless interface
physical id: 1
bus info: usb@2:1
logical name: wlan1
serial: f8:d1:11:18:95:9f
capabilities: ethernet physical wireless
configuration: broadcast=yes driver=ath9k_htc
driverversion=3.2.0-30-generic firmware=1.3 ip=192.168.0.9 link=yes
multicast=yes wireless=IEEE 802.11bg
Looks like ath9k_htc is the correct driver for v3. However I'm still
getting the system hangs ...
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https://bugs.launchpad.net/bugs/1048293
Title:
Network Manager gets locked and crashed on a regular basis with USB
wifi key
Status in “network-manager” package in Ubuntu:
New
Bug description:
I have a TP-Link TL-WN821N, which I use with windows without issue. It
works in Ubuntu however suddenly the Network manager process locks up
and crashes, occasionally with a stacktrace (an example is attached).
This happens randomly with no warning, and needs the system reset to
correct the issue and start the key working again.
I originally had the issue using the ar9170usb driver, and followed
the advice in
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/540827 in the
hope I could use carl9170
(http://wireless.kernel.org/en/users/Drivers/carl9170) rather than
ar9170usb. However, once I blacklisted the ar9170usb driver, I get:
Sep 9 17:10:49 ethel kernel: [ 310.170984] cfg80211: Updating
information on frequency 2412 MHz for a 20 MHz width channel with
regulatory rule
I had been led to believe that the ar9170usb had been removed from the
Kernel in 3.0+ (http://wiki.debian.org/carl9170) but it appeared to be
there on my system as the driver was being used ...
Does this mean it is actually using cfg80211 rather than carl9170? If
this is correct how do I get it to adjust?
Thanks for any help, this is a bit of a blocker at the moment for me!
ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: network-manager 0.9.4.0-0ubuntu4.1
ProcVersionSignature: Ubuntu 3.2.0-30.48-generic 3.2.27
Uname: Linux 3.2.0-30-generic x86_64
NonfreeKernelModules: fglrx
ApportVersion: 2.0.1-0ubuntu12
Architecture: amd64
CRDA: Error: [Errno 2] No such file or directory
Date: Sun Sep 9 17:06:27 2012
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Release amd64
(20120425)
IpRoute:
default via 192.168.0.1 dev wlan1 proto static
169.254.0.0/16 dev wlan1 scope link metric 1000
192.168.0.0/24 dev wlan1 proto kernel scope link src 192.168.0.9 metric 2
NetworkManager.state:
[main]
NetworkingEnabled=true
WirelessEnabled=true
WWANEnabled=true
WimaxEnabled=true
PciNetwork:
ProcEnviron:
LANGUAGE=en_GB:en
TERM=xterm
PATH=(custom, no user)
LANG=en_GB.UTF-8
SHELL=/bin/zsh
RfKill:
0: phy0: Wireless LAN
Soft blocked: no
Hard blocked: no
SourcePackage: network-manager
UpgradeStatus: No upgrade log present (probably fresh install)
nmcli-con:
NAME UUID TYPE
TIMESTAMP TIMESTAMP-REAL AUTOCONNECT READONLY
DBUS-PATH
jvc26 344df04b-a55d-479e-94a4-c9b162d87040
802-11-wireless 0 never yes
no /org/freedesktop/NetworkManager/Settings/2
heffalump 70b7ec36-d607-4448-bf5a-2ba58c92cc0c
802-11-wireless 0 never yes
no /org/freedesktop/NetworkManager/Settings/1
frogmella 46bffa18-7ec6-4d2c-b197-4eb790ca29dd
802-11-wireless 1347206755 Sun 09 Sep 2012 17:05:55 BST yes
no /org/freedesktop/NetworkManager/Settings/0
nmcli-dev:
DEVICE TYPE STATE DBUS-PATH
wlan1 802-11-wireless connected
/org/freedesktop/NetworkManager/Devices/0
nmcli-nm:
RUNNING VERSION STATE NET-ENABLED WIFI-HARDWARE
WIFI WWAN-HARDWARE WWAN
running 0.9.4.0 connected enabled enabled
enabled enabled disabled
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