*** This bug is a duplicate of bug 971728 ***
    https://bugs.launchpad.net/bugs/971728

Public bug reported:

I have this WiFi dongle:

ID 0846:9001 NetGear, Inc. WN111(v2) RangeMax Next Wireless [Atheros
AR9170+AR9101]

After a random amount of time, the connection seems up but there isn't
data transfers (for example no DNS lookup).

After minutes I have this in my dmesg:

[ 1625.246976] ieee80211 phy0: channel change: 2427 -> 2432 failed (3).

Info on carl9170 config:

[ 843.389952] usb 1-2: driver API: 1.9.4 2011-08-15 [1-1]
[ 843.389960] usb 1-2: firmware API: 1.9.5 2012-03-14

I've tried the new firmware avaiable on official carl9170 page but this
did not fix this bug.

My workaround for reactivate the connection is turn off the device and
then turn on:

sudo rfkill block 0 && sudo rfkill unblock 0

This bug not affected Ubuntu 11.10. I don't know if the bug is carl9170
or NetworkManager related.

ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: linux-image-3.2.0-24-generic 3.2.0-24.37
ProcVersionSignature: Ubuntu 3.2.0-24.37-generic 3.2.14
Uname: Linux 3.2.0-24-generic i686
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24.
ApportVersion: 2.0.1-0ubuntu7
Architecture: i386
AudioDevicesInUse:
 USER        PID ACCESS COMMAND
 /dev/snd/controlC0:  dnax       1618 F.... pulseaudio
Card0.Amixer.info:
 Card hw:0 'V8237'/'VIA 8237 with CMI9761A+ at 0xc400, irq 22'
   Mixer name   : 'C-Media Electronics CMI9761A+'
   Components   : 'AC97a:434d4983'
   Controls      : 41
   Simple ctrls  : 30
Date: Mon May 21 23:55:18 2012
HibernationDevice: RESUME=UUID=02b6d7b7-d9f5-46a7-97bf-e61a26afb79d
InstallationMedia: Ubuntu 9.10 "Karmic Koala" - Release i386 (20091028.5)
ProcFB: 0 radeondrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.2.0-24-generic 
root=UUID=643d3fdd-0f4b-40ff-b7f1-3c8779afd263 ro ipv6.disable=1 quiet splash 
vt.handoff=7
RelatedPackageVersions:
 linux-restricted-modules-3.2.0-24-generic N/A
 linux-backports-modules-3.2.0-24-generic  N/A
 linux-firmware                            1.79
RfKill:
 2: phy2: Wireless LAN
        Soft blocked: no
        Hard blocked: no
SourcePackage: linux
UpgradeStatus: Upgraded to precise on 2012-05-13 (8 days ago)
dmi.bios.date: 05/19/2005
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: P1.40
dmi.board.name: K7VT4APro
dmi.board.version: 1.0x
dmi.chassis.asset.tag: 00000000
dmi.chassis.type: 3
dmi.chassis.version: X.XX
dmi.modalias: 
dmi:bvnAmericanMegatrendsInc.:bvrP1.40:bd05/19/2005:svn:pnK7VT4APro:pvr1.0x:rvn:rnK7VT4APro:rvr1.0x:cvn:ct3:cvrX.XX:
dmi.product.name: K7VT4APro
dmi.product.version: 1.0x

** Affects: linux (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: apport-bug i386 precise

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https://bugs.launchpad.net/bugs/1002545

Title:
  WiFi network blocked [carl9170]

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