Public bug reported:
Similar to and possibly related to
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1034740 but my
problem is a little different. While the above bug appears to connect
and then slow down eventually failing with packet loss, my problem is
almost the opposite. If I can connect, it seems to work fine
indefinitely, but initial connections (after suspend, or right after a
reboot) only occasionally works. Sometimes, if I wait long enough the
connection starts working after several minutes, sometimes it works if I
turn off wireless and turn it back on, but often it just never works.
According to dmesg, iwlwifi is associating with the access point just
fine, but if I ping the ap, I get "netowrk unreachable".
My device "Intel Corporation Centrino Ultimate-N 6300 (rev 3e)" works
fine on 802.11g networks or on an 802.11n capable AP if use module
option "11n_disable=1".
After associating, dmesg report:
# dmesg |tail
[101704.467324] iwlwifi 0000:03:00.0: L1 Enabled; Disabling L0S
[101704.474053] iwlwifi 0000:03:00.0: Radio type=0x0-0x3-0x1
[101704.621429] IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready
[101704.717787] wlan0: authenticate with xx:xx:xx:xx:xx:xx
[101704.780532] wlan0: send auth to xx:xx:xx:xx:xx:xx (try 1/3)
[101704.793246] wlan0: authenticated
[101704.797390] wlan0: associate with xx:xx:xx:xx:xx:xx (try 1/3)
[101704.798226] wlan0: RX AssocResp from xx:xx:xx:xx:xx:xx (capab=0x1011
status=0 aid=1)
[101704.802300] wlan0: associated
[101704.802347] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready
But network is unreachable.
ProblemType: Bug
DistroRelease: Ubuntu 13.10
Package: linux-image-3.11.0-15-generic 3.11.0-15.25
ProcVersionSignature: Ubuntu 3.11.0-15.25-generic 3.11.10
Uname: Linux 3.11.0-15-generic x86_64
ApportVersion: 2.12.5-0ubuntu2.2
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: jdrogers 2276 F.... pulseaudio
Date: Tue Feb 18 12:12:57 2014
HibernationDevice: RESUME=UUID=12dd9e3a-ab8c-468f-a7bc-f3c05e4bcddc
InstallationDate: Installed on 2014-01-01 (47 days ago)
InstallationMedia: Ubuntu 13.10 "Saucy Salamander" - Release amd64 (20131016.1)
MachineType: LENOVO 2352CTO
MarkForUpload: True
ProcEnviron:
TERM=xterm
PATH=(custom, no user)
XDG_RUNTIME_DIR=<set>
LANG=en_US.UTF-8
SHELL=/bin/bash
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.11.0-15-generic
root=UUID=b9c20532-4cfc-4833-830a-3d4500621c0e ro rootflags=subvol=@ quiet
splash vt.handoff=7
RelatedPackageVersions:
linux-restricted-modules-3.11.0-15-generic N/A
linux-backports-modules-3.11.0-15-generic N/A
linux-firmware 1.116.2
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 05/24/2012
dmi.bios.vendor: LENOVO
dmi.bios.version: G7ET29WW (1.11 )
dmi.board.asset.tag: Not Available
dmi.board.name: 2352CTO
dmi.board.vendor: LENOVO
dmi.board.version: Not Available
dmi.chassis.asset.tag: No Asset Information
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: Not Available
dmi.modalias:
dmi:bvnLENOVO:bvrG7ET29WW(1.11):bd05/24/2012:svnLENOVO:pn2352CTO:pvrThinkPadT430s:rvnLENOVO:rn2352CTO:rvrNotAvailable:cvnLENOVO:ct10:cvrNotAvailable:
dmi.product.name: 2352CTO
dmi.product.version: ThinkPad T430s
dmi.sys.vendor: LENOVO
** Affects: linux (Ubuntu)
Importance: Undecided
Status: Confirmed
** Tags: amd64 apport-bug saucy
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https://bugs.launchpad.net/bugs/1281729
Title:
iwlwifi using 802.11n associates with access point but network is
unreachable
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