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[Bug 1328345] Re: iwlwifi 0000:01:00.0: fail to flush all tx fifo queues Q 2

To: kernel-packages@xxxxxxxxxxxxxxxxxxx
From: cd311 <1328345@xxxxxxxxxxxxxxxxxx>
Date: Tue, 12 Aug 2014 08:55:18 -0000
Reply-to: Bug 1328345 <1328345@xxxxxxxxxxxxxxxxxx>
Sender: bounces@xxxxxxxxxxxxx
Hi

I have the same problem. I still see the wireless networks. Sometimes
connecting to the network  is possible but transfering datas is near to
impossible once the "fail to flush all tx fifo queues" happens.

$ lshw ouput
    description: Laptop
    product: 900X3C/900X3D/900X4C/900X4D (System SKUNumber)
    vendor: SAMSUNG ELECTRONICS CO., LTD.
Its a Samsung New Series 9 900X

Wlan chip is a
           *-network
                description: Wireless interface
                product: Centrino Advanced-N 6235
                vendor: Intel Corporation
                physical id: 0
                bus info: pci@0000:01:00.0
                logical name: wlan0
                version: 24
                serial: c8:f7:33:19:7e:f4
                width: 64 bits
                clock: 33MHz
                capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless
                configuration: broadcast=yes driver=iwlwifi driverversion=3.13.0-32-generic firmware=18.168.6.1 ip=172.19.3.235 latency=0 link=yes multicast=yes wireless=IEEE 802.11abg
                resources: irq:49 memory:f0600000-f0601fff


$ cat /etc/lsb-release 
DISTRIB_ID=Ubuntu
DISTRIB_RELEASE=14.04
DISTRIB_CODENAME=trusty
DISTRIB_DESCRIPTION="Ubuntu 14.04.1 LTS"

outpt of dmesg:
[13562.125715] iwlwifi 0000:01:00.0: fail to flush all tx fifo queues Q 2
[13562.125731] iwlwifi 0000:01:00.0: Current SW read_ptr 138 write_ptr 140
[13562.125827] iwl data: 00000000: 00 0c 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
[13562.125893] iwlwifi 0000:01:00.0: FH TRBs(0) = 0x00000000
[13562.125957] iwlwifi 0000:01:00.0: FH TRBs(1) = 0x8010208b
[13562.126022] iwlwifi 0000:01:00.0: FH TRBs(2) = 0x00000000
[13562.126087] iwlwifi 0000:01:00.0: FH TRBs(3) = 0x803000c7
[13562.126152] iwlwifi 0000:01:00.0: FH TRBs(4) = 0x00000000
[13562.126215] iwlwifi 0000:01:00.0: FH TRBs(5) = 0x00000000
[13562.126279] iwlwifi 0000:01:00.0: FH TRBs(6) = 0x00000000
[13562.126342] iwlwifi 0000:01:00.0: FH TRBs(7) = 0x007090a3
[13562.126527] iwlwifi 0000:01:00.0: Q 0 is active and mapped to fifo 3 ra_tid 0x0000 [200,200]
[13562.126710] iwlwifi 0000:01:00.0: Q 1 is active and mapped to fifo 2 ra_tid 0x0000 [0,0]
[13562.126911] iwlwifi 0000:01:00.0: Q 2 is active and mapped to fifo 1 ra_tid 0x0000 [138,140]
[13562.127109] iwlwifi 0000:01:00.0: Q 3 is active and mapped to fifo 0 ra_tid 0x0000 [0,0]
[13562.127291] iwlwifi 0000:01:00.0: Q 4 is active and mapped to fifo 0 ra_tid 0x0000 [0,0]
[13562.127475] iwlwifi 0000:01:00.0: Q 5 is active and mapped to fifo 4 ra_tid 0x0000 [0,0]
[13562.127675] iwlwifi 0000:01:00.0: Q 6 is active and mapped to fifo 2 ra_tid 0x0000 [0,0]
[13562.127857] iwlwifi 0000:01:00.0: Q 7 is active and mapped to fifo 5 ra_tid 0x0000 [0,0]
[13562.128033] iwlwifi 0000:01:00.0: Q 8 is active and mapped to fifo 4 ra_tid 0x0000 [0,0]
[13562.128235] iwlwifi 0000:01:00.0: Q 9 is active and mapped to fifo 7 ra_tid 0x0000 [164,164]
[13562.128418] iwlwifi 0000:01:00.0: Q 10 is active and mapped to fifo 5 ra_tid 0x0000 [0,0]
[13562.128600] iwlwifi 0000:01:00.0: Q 11 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
[13562.128782] iwlwifi 0000:01:00.0: Q 12 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
[13562.129014] iwlwifi 0000:01:00.0: Q 13 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
[13562.129226] iwlwifi 0000:01:00.0: Q 14 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
[13562.129409] iwlwifi 0000:01:00.0: Q 15 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
[13562.129591] iwlwifi 0000:01:00.0: Q 16 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
[13562.129842] iwlwifi 0000:01:00.0: Q 17 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
[13562.130026] iwlwifi 0000:01:00.0: Q 18 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
[13562.130207] iwlwifi 0000:01:00.0: Q 19 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
[13565.128576] iwlwifi 0000:01:00.0: fail to flush all tx fifo queues Q 2
[13565.128589] iwlwifi 0000:01:00.0: Current SW read_ptr 140 write_ptr 165
[13565.128679] iwl data: 00000000: 00 f0 ff 0f 00 00 00 00 00 00 00 00 00 00 00 00  ................
[13565.128738] iwlwifi 0000:01:00.0: FH TRBs(0) = 0x00000000
[13565.128799] iwlwifi 0000:01:00.0: FH TRBs(1) = 0x8010209b
[13565.128856] iwlwifi 0000:01:00.0: FH TRBs(2) = 0x00000000
[13565.128913] iwlwifi 0000:01:00.0: FH TRBs(3) = 0x803000c8
[13565.128973] iwlwifi 0000:01:00.0: FH TRBs(4) = 0x00000000
[13565.129034] iwlwifi 0000:01:00.0: FH TRBs(5) = 0x00000000
[13565.129096] iwlwifi 0000:01:00.0: FH TRBs(6) = 0x00000000
[13565.129153] iwlwifi 0000:01:00.0: FH TRBs(7) = 0x007090a3
[13565.129375] iwlwifi 0000:01:00.0: Q 0 is active and mapped to fifo 3 ra_tid 0x0000 [201,201]
[13565.129553] iwlwifi 0000:01:00.0: Q 1 is active and mapped to fifo 2 ra_tid 0x0000 [0,0]
[13565.129731] iwlwifi 0000:01:00.0: Q 2 is active and mapped to fifo 1 ra_tid 0x0000 [140,165]
[13565.129909] iwlwifi 0000:01:00.0: Q 3 is active and mapped to fifo 0 ra_tid 0x0000 [0,0]
[13565.130159] iwlwifi 0000:01:00.0: Q 4 is active and mapped to fifo 0 ra_tid 0x0000 [0,0]
[13565.130413] iwlwifi 0000:01:00.0: Q 5 is active and mapped to fifo 4 ra_tid 0x0000 [0,0]
[13565.130650] iwlwifi 0000:01:00.0: Q 6 is active and mapped to fifo 2 ra_tid 0x0000 [0,0]
[13565.130870] iwlwifi 0000:01:00.0: Q 7 is active and mapped to fifo 5 ra_tid 0x0000 [0,0]
[13565.131052] iwlwifi 0000:01:00.0: Q 8 is active and mapped to fifo 4 ra_tid 0x0000 [0,0]
[13565.131233] iwlwifi 0000:01:00.0: Q 9 is active and mapped to fifo 7 ra_tid 0x0000 [164,164]
[13565.131432] iwlwifi 0000:01:00.0: Q 10 is active and mapped to fifo 5 ra_tid 0x0000 [0,0]
[13565.131606] iwlwifi 0000:01:00.0: Q 11 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
[13565.131778] iwlwifi 0000:01:00.0: Q 12 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
[13565.131951] iwlwifi 0000:01:00.0: Q 13 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
[13565.132121] iwlwifi 0000:01:00.0: Q 14 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
[13565.132293] iwlwifi 0000:01:00.0: Q 15 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
[13565.132464] iwlwifi 0000:01:00.0: Q 16 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
[13565.132677] iwlwifi 0000:01:00.0: Q 17 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
[13565.132839] iwlwifi 0000:01:00.0: Q 18 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
[13565.133010] iwlwifi 0000:01:00.0: Q 19 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
[13568.131478] iwlwifi 0000:01:00.0: fail to flush all tx fifo queues Q 2
[13568.131493] iwlwifi 0000:01:00.0: Current SW read_ptr 140 write_ptr 197
[13568.131607] iwl data: 00000000: 00 f0 ff 0f 00 00 00 00 00 00 00 00 00 00 00 00  ................
and so on

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https://bugs.launchpad.net/bugs/1328345

Title:
  iwlwifi 0000:01:00.0: fail to flush all tx fifo queues Q 2

Status in The Linux Kernel:
  Unknown
Status in “linux” package in Ubuntu:
  Incomplete

Bug description:
  [   69.758068] iwlwifi 0000:01:00.0: fail to flush all tx fifo queues Q 2
  [   69.758077] iwlwifi 0000:01:00.0: Current SW read_ptr 151 write_ptr 187
  [   69.758104] iwl data: 00000000: 00 00 80 ff 00 00 00 00 7f 00 00 00 00 00 00 00  ................
  [   69.758119] iwlwifi 0000:01:00.0: FH TRBs(0) = 0x00000000
  [   69.758134] iwlwifi 0000:01:00.0: FH TRBs(1) = 0x801020a6
  [   69.758148] iwlwifi 0000:01:00.0: FH TRBs(2) = 0x00000000
  [   69.758162] iwlwifi 0000:01:00.0: FH TRBs(3) = 0x80300011
  [   69.758176] iwlwifi 0000:01:00.0: FH TRBs(4) = 0x00000000
  [   69.758191] iwlwifi 0000:01:00.0: FH TRBs(5) = 0x00000000
  [   69.758205] iwlwifi 0000:01:00.0: FH TRBs(6) = 0x00000000
  [   69.758219] iwlwifi 0000:01:00.0: FH TRBs(7) = 0x007090f6
  [   69.758276] iwlwifi 0000:01:00.0: Q 0 is active and mapped to fifo 3 ra_tid 0x0000 [18,18]
  [   69.758332] iwlwifi 0000:01:00.0: Q 1 is active and mapped to fifo 2 ra_tid 0x0000 [0,0]
  [   69.758388] iwlwifi 0000:01:00.0: Q 2 is active and mapped to fifo 1 ra_tid 0x0000 [151,187]
  [   69.758445] iwlwifi 0000:01:00.0: Q 3 is active and mapped to fifo 0 ra_tid 0x0000 [0,0]
  [   69.758502] iwlwifi 0000:01:00.0: Q 4 is active and mapped to fifo 0 ra_tid 0x0000 [0,0]
  [   69.758558] iwlwifi 0000:01:00.0: Q 5 is active and mapped to fifo 4 ra_tid 0x0000 [0,0]
  [   69.758614] iwlwifi 0000:01:00.0: Q 6 is active and mapped to fifo 2 ra_tid 0x0000 [0,0]
  [   69.758670] iwlwifi 0000:01:00.0: Q 7 is active and mapped to fifo 5 ra_tid 0x0000 [0,0]
  [   69.758726] iwlwifi 0000:01:00.0: Q 8 is active and mapped to fifo 4 ra_tid 0x0000 [0,0]
  [   69.758782] iwlwifi 0000:01:00.0: Q 9 is active and mapped to fifo 7 ra_tid 0x0000 [247,247]
  [   69.758839] iwlwifi 0000:01:00.0: Q 10 is active and mapped to fifo 5 ra_tid 0x0000 [0,0]
  [   69.758896] iwlwifi 0000:01:00.0: Q 11 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
  [   69.758951] iwlwifi 0000:01:00.0: Q 12 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
  [   69.759008] iwlwifi 0000:01:00.0: Q 13 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
  [   69.759078] iwlwifi 0000:01:00.0: Q 14 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
  [   69.759142] iwlwifi 0000:01:00.0: Q 15 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
  [   69.759202] iwlwifi 0000:01:00.0: Q 16 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
  [   69.759262] iwlwifi 0000:01:00.0: Q 17 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
  [   69.759322] iwlwifi 0000:01:00.0: Q 18 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
  [   69.759383] iwlwifi 0000:01:00.0: Q 19 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]

  ProblemType: Bug
  DistroRelease: Ubuntu 14.10
  Package: linux-image-3.15.0-5-lowlatency 3.15.0-5.10
  ProcVersionSignature: Ubuntu 3.15.0-5.10-lowlatency 3.15.0-rc8
  Uname: Linux 3.15.0-5-lowlatency x86_64
  ApportVersion: 2.14.3-0ubuntu1
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  caravena   2052 F.... pulseaudio
   /dev/snd/controlC1:  caravena   2052 F.... pulseaudio
  CurrentDesktop: GNOME
  Date: Mon Jun  9 22:54:06 2014
  HibernationDevice: RESUME=UUID=360bd2d2-4f44-4311-86d6-4781ac81ee87
  InstallationDate: Installed on 2014-04-27 (43 days ago)
  InstallationMedia: Ubuntu-GNOME 14.04 LTS "Trusty Tahr" - Release amd64 (20140416.2)
  MachineType: SAMSUNG ELECTRONICS CO., LTD. 530U3C/530U4C
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.15.0-5-lowlatency root=UUID=13144268-2374-4154-83f1-c35d81306190 ro quiet splash vt.handoff=7
  RelatedPackageVersions:
   linux-restricted-modules-3.15.0-5-lowlatency N/A
   linux-backports-modules-3.15.0-5-lowlatency  N/A
   linux-firmware                               1.131
  SourcePackage: linux
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 04/15/2013
  dmi.bios.vendor: Phoenix Technologies Ltd.
  dmi.bios.version: P14AAJ
  dmi.board.asset.tag: Base Board Asset Tag
  dmi.board.name: SAMSUNG_NP1234567890
  dmi.board.vendor: SAMSUNG ELECTRONICS CO., LTD.
  dmi.board.version: FAB1
  dmi.chassis.asset.tag: No Asset Tag
  dmi.chassis.type: 9
  dmi.chassis.vendor: SAMSUNG ELECTRONICS CO., LTD.
  dmi.chassis.version: 0.1
  dmi.modalias: dmi:bvnPhoenixTechnologiesLtd.:bvrP14AAJ:bd04/15/2013:svnSAMSUNGELECTRONICSCO.,LTD.:pn530U3C/530U4C:pvr0.1:rvnSAMSUNGELECTRONICSCO.,LTD.:rnSAMSUNG_NP1234567890:rvrFAB1:cvnSAMSUNGELECTRONICSCO.,LTD.:ct9:cvr0.1:
  dmi.product.name: 530U3C/530U4C
  dmi.product.version: 0.1
  dmi.sys.vendor: SAMSUNG ELECTRONICS CO., LTD.

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References

[Bug 1328345] [NEW] iwlwifi 0000:01:00.0: fail to flush all tx fifo queues Q 2
From: Cristian Aravena Romero, 2014-06-10