I have just finished testing the latest upstream kernel, and I confirm
that the bug still exists (i.e. I am still occasionally seeing 'fail to
flush all tx fifo queues Q 0' messages).
** Tags added: kernel-bug-exists-upstream
** Changed in: linux (Ubuntu)
Status: Incomplete => Confirmed
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https://bugs.launchpad.net/bugs/1305406
Title:
[8086:4238] iwlwifi: fail to flush all tx fifo queues Q 0
Status in “linux” package in Ubuntu:
Confirmed
Bug description:
I have a Lenovo ThinkPad X201 Tablet with an Intel Centrino Ultimate-N
6300 AGN wireless card. Ever since I have upgraded to Ubuntu 13.10
from Ubuntu 12.10, I keep experiencing this annoying issue on wireless
networks with multiple APs: a TX queue gets stuck, and the wireless
card cannot send any packets. The Wi-Fi LED constantly flashes, and
sometimes, it becomes nearly impossible to restart the wireless card
using Fn+F5.
The NetworkManager connection is setup as follows:
SSID: IllinoisNet
BSSID: DA:BE:76:xx:xx:xx
Security: WPA/WPA2 Enterprise
Authentication: Protected EAP (PEAP)
CA Certificate: /etc/ssl/certs/AddTrust_External_Root.pem
PEAP Version: Automatic
Inner Authentication: MSCHAPv2
Notice that I have manually specified a BSSID to force the system to
use only one AP (since I have not found a way to reduce the roaming
aggressiveness on Intel wireless cards in Linux).
Attached is the Wireshark log and the syslog output while TX queue 0
is stuck.
ProblemType: Bug
DistroRelease: Ubuntu 13.10
Package: linux-image-3.11.0-19-generic 3.11.0-19.33
ProcVersionSignature: Ubuntu 3.11.0-19.33-generic 3.11.10.5
Uname: Linux 3.11.0-19-generic x86_64
ApportVersion: 2.12.5-0ubuntu2.2
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: ron 2599 F.... pulseaudio
Date: Wed Apr 9 21:36:49 2014
HibernationDevice: RESUME=UUID=70381092-dbb1-458c-8c5c-68850e61086c
InstallationDate: Installed on 2013-02-28 (405 days ago)
InstallationMedia: Ubuntu 12.10 "Quantal Quetzal" - Release amd64 (20121017.5)
MachineType: LENOVO 0831CTO
MarkForUpload: True
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.11.0-19-generic
root=UUID=606d1eed-eeca-4acb-a739-6796a7f7432b ro quiet splash vt.handoff=7
RelatedPackageVersions:
linux-restricted-modules-3.11.0-19-generic N/A
linux-backports-modules-3.11.0-19-generic N/A
linux-firmware 1.116.2
SourcePackage: linux
UpgradeStatus: Upgraded to saucy on 2014-01-22 (77 days ago)
dmi.bios.date: 04/26/2012
dmi.bios.vendor: LENOVO
dmi.bios.version: 6QET69WW (1.39 )
dmi.board.name: 0831CTO
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:bvr6QET69WW(1.39):bd04/26/2012:svnLENOVO:pn0831CTO:pvrThinkPadX201Tablet:rvnLENOVO:rn0831CTO:rvrNotAvailable:cvnLENOVO:ct10:cvrNotAvailable:
dmi.product.name: 0831CTO
dmi.product.version: ThinkPad X201 Tablet
dmi.sys.vendor: LENOVO
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