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[Bug 1270808] Re: iwlwifi 0000:01:00.0: fail to flush all tx fifo queues Q 2

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Cristian Aravena Romero, thank you for reporting this and helping make Ubuntu better. Please answer the following questions:
1a) What specific impact does this have on your ability to use WiFi, if any?
    1b) If you had an actual impact, did you not have this problem in a release prior to Trusty? 
2) What is the full computer model as noted on the sticker (ex. NP530U3C-A0BUK)?
3) Could you please test the latest mainline kernel (v3.13, not v3.13-rc8) via https://wiki.ubuntu.com/Kernel/MainlineBuilds and advise to the results?

As well, filing bugs on the kernel.org bugzilla is largely ignored in
favor of the appropriate mailing list. Also, your upstream report
doesn't have the vast majority of information kernel.org developers want
to see when reviewing debug information.

** Changed in: linux (Ubuntu)
       Status: New => Incomplete

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https://bugs.launchpad.net/bugs/1270808

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:
  profile/gdm" pid=7426 comm="mission-control" requested_mask="r" denied_mask="r" fsuid=115 ouid=0
  [ 2390.836955] iwlwifi 0000:01:00.0: fail to flush all tx fifo queues Q 2
  [ 2390.836969] iwlwifi 0000:01:00.0: Current SW read_ptr 210 write_ptr 99
  [ 2390.837000] iwl data: 00000000: 00 00 fc ff 00 00 00 00 03 00 00 00 00 00 00 00  ................
  [ 2390.837019] iwlwifi 0000:01:00.0: FH TRBs(0) = 0x00000000
  [ 2390.837036] iwlwifi 0000:01:00.0: FH TRBs(1) = 0x801020e1
  [ 2390.837053] iwlwifi 0000:01:00.0: FH TRBs(2) = 0x00000000
  [ 2390.837071] iwlwifi 0000:01:00.0: FH TRBs(3) = 0x80300018
  [ 2390.837088] iwlwifi 0000:01:00.0: FH TRBs(4) = 0x00000000
  [ 2390.837105] iwlwifi 0000:01:00.0: FH TRBs(5) = 0x00000000
  [ 2390.837123] iwlwifi 0000:01:00.0: FH TRBs(6) = 0x00000000
  [ 2390.837140] iwlwifi 0000:01:00.0: FH TRBs(7) = 0x00709050
  [ 2390.837203] iwlwifi 0000:01:00.0: Q 0 is active and mapped to fifo 3 ra_tid 0x0000 [25,25]
  [ 2390.837264] iwlwifi 0000:01:00.0: Q 1 is active and mapped to fifo 2 ra_tid 0x0000 [0,0]
  [ 2390.837324] iwlwifi 0000:01:00.0: Q 2 is active and mapped to fifo 1 ra_tid 0x0000 [210,99]
  [ 2390.837385] iwlwifi 0000:01:00.0: Q 3 is active and mapped to fifo 0 ra_tid 0x0000 [0,0]
  [ 2390.837446] iwlwifi 0000:01:00.0: Q 4 is active and mapped to fifo 0 ra_tid 0x0000 [0,0]
  [ 2390.837507] iwlwifi 0000:01:00.0: Q 5 is active and mapped to fifo 4 ra_tid 0x0000 [0,0]
  [ 2390.837567] iwlwifi 0000:01:00.0: Q 6 is active and mapped to fifo 2 ra_tid 0x0000 [0,0]
  [ 2390.837627] iwlwifi 0000:01:00.0: Q 7 is active and mapped to fifo 5 ra_tid 0x0000 [0,0]
  [ 2390.837688] iwlwifi 0000:01:00.0: Q 8 is active and mapped to fifo 4 ra_tid 0x0000 [0,0]
  [ 2390.837751] iwlwifi 0000:01:00.0: Q 9 is active and mapped to fifo 7 ra_tid 0x0000 [81,81]
  [ 2390.837814] iwlwifi 0000:01:00.0: Q 10 is active and mapped to fifo 5 ra_tid 0x0000 [0,0]
  [ 2390.837879] iwlwifi 0000:01:00.0: Q 11 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
  [ 2390.837943] iwlwifi 0000:01:00.0: Q 12 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
  [ 2390.838005] iwlwifi 0000:01:00.0: Q 13 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
  [ 2390.838065] iwlwifi 0000:01:00.0: Q 14 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
  [ 2390.838126] iwlwifi 0000:01:00.0: Q 15 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
  [ 2390.838187] iwlwifi 0000:01:00.0: Q 16 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
  [ 2390.838248] iwlwifi 0000:01:00.0: Q 17 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
  [ 2390.838308] iwlwifi 0000:01:00.0: Q 18 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
  [ 2390.838370] iwlwifi 0000:01:00.0: Q 19 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
  [ 2981.173273] iwlwifi 0000:01:00.0: fail to flush all tx fifo queues Q 2
  [ 2981.173287] iwlwifi 0000:01:00.0: Current SW read_ptr 103 write_ptr 214
  [ 2981.173321] iwl data: 00000000: 00 00 00 00 00 00 00 00 80 ff 3f 00 00 00 00 00  ..........?.....
  [ 2981.173342] iwlwifi 0000:01:00.0: FH TRBs(0) = 0x00000000
  [ 2981.173363] iwlwifi 0000:01:00.0: FH TRBs(1) = 0x80102075
  [ 2981.173380] iwlwifi 0000:01:00.0: FH TRBs(2) = 0x00000000
  [ 2981.173397] iwlwifi 0000:01:00.0: FH TRBs(3) = 0x8030001d
  [ 2981.173415] iwlwifi 0000:01:00.0: FH TRBs(4) = 0x00000000
  [ 2981.173433] iwlwifi 0000:01:00.0: FH TRBs(5) = 0x00000000
  [ 2981.173450] iwlwifi 0000:01:00.0: FH TRBs(6) = 0x00000000
  [ 2981.173467] iwlwifi 0000:01:00.0: FH TRBs(7) = 0x007090ba
  [ 2981.173529] iwlwifi 0000:01:00.0: Q 0 is active and mapped to fifo 3 ra_tid 0x0000 [30,30]
  [ 2981.173590] iwlwifi 0000:01:00.0: Q 1 is active and mapped to fifo 2 ra_tid 0x0000 [0,0]
  [ 2981.173650] iwlwifi 0000:01:00.0: Q 2 is active and mapped to fifo 1 ra_tid 0x0000 [103,214]
  [ 2981.173712] iwlwifi 0000:01:00.0: Q 3 is active and mapped to fifo 0 ra_tid 0x0000 [0,0]
  [ 2981.173772] iwlwifi 0000:01:00.0: Q 4 is active and mapped to fifo 0 ra_tid 0x0000 [0,0]
  [ 2981.173832] iwlwifi 0000:01:00.0: Q 5 is active and mapped to fifo 4 ra_tid 0x0000 [0,0]
  [ 2981.173920] iwlwifi 0000:01:00.0: Q 6 is active and mapped to fifo 2 ra_tid 0x0000 [0,0]
  [ 2981.173981] iwlwifi 0000:01:00.0: Q 7 is active and mapped to fifo 5 ra_tid 0x0000 [0,0]
  [ 2981.174041] iwlwifi 0000:01:00.0: Q 8 is active and mapped to fifo 4 ra_tid 0x0000 [0,0]
  [ 2981.174102] iwlwifi 0000:01:00.0: Q 9 is active and mapped to fifo 7 ra_tid 0x0000 [187,187]
  [ 2981.174162] iwlwifi 0000:01:00.0: Q 10 is active and mapped to fifo 5 ra_tid 0x0000 [0,0]
  [ 2981.174223] iwlwifi 0000:01:00.0: Q 11 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
  [ 2981.174284] iwlwifi 0000:01:00.0: Q 12 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
  [ 2981.174344] iwlwifi 0000:01:00.0: Q 13 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
  [ 2981.174404] iwlwifi 0000:01:00.0: Q 14 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
  [ 2981.174465] iwlwifi 0000:01:00.0: Q 15 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
  [ 2981.174525] iwlwifi 0000:01:00.0: Q 16 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
  [ 2981.174586] iwlwifi 0000:01:00.0: Q 17 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
  [ 2981.174647] iwlwifi 0000:01:00.0: Q 18 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
  [ 2981.174707] iwlwifi 0000:01:00.0: Q 19 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
  [ 3106.769330] iwlwifi 0000:01:00.0: fail to flush all tx fifo queues Q 2
  [ 3106.769344] iwlwifi 0000:01:00.0: Current SW read_ptr 86 write_ptr 107
  [ 3106.769376] iwl data: 00000000: 00 00 c0 ff 00 00 00 00 3f 00 00 00 00 00 00 00  ........?.......
  [ 3106.769395] iwlwifi 0000:01:00.0: FH TRBs(0) = 0x00000000
  [ 3106.769412] iwlwifi 0000:01:00.0: FH TRBs(1) = 0x80102065
  [ 3106.769430] iwlwifi 0000:01:00.0: FH TRBs(2) = 0x00000000
  [ 3106.769447] iwlwifi 0000:01:00.0: FH TRBs(3) = 0x8030001e
  [ 3106.769465] iwlwifi 0000:01:00.0: FH TRBs(4) = 0x00000000
  [ 3106.769482] iwlwifi 0000:01:00.0: FH TRBs(5) = 0x00000000
  [ 3106.769499] iwlwifi 0000:01:00.0: FH TRBs(6) = 0x00000000
  [ 3106.769517] iwlwifi 0000:01:00.0: FH TRBs(7) = 0x007090f5
  [ 3106.769579] iwlwifi 0000:01:00.0: Q 0 is active and mapped to fifo 3 ra_tid 0x0000 [31,31]
  [ 3106.769640] iwlwifi 0000:01:00.0: Q 1 is active and mapped to fifo 2 ra_tid 0x0000 [0,0]
  [ 3106.769700] iwlwifi 0000:01:00.0: Q 2 is active and mapped to fifo 1 ra_tid 0x0000 [86,107]
  [ 3106.769761] iwlwifi 0000:01:00.0: Q 3 is active and mapped to fifo 0 ra_tid 0x0000 [0,0]
  [ 3106.769822] iwlwifi 0000:01:00.0: Q 4 is active and mapped to fifo 0 ra_tid 0x0000 [0,0]
  [ 3106.769882] iwlwifi 0000:01:00.0: Q 5 is active and mapped to fifo 4 ra_tid 0x0000 [0,0]
  [ 3106.769942] iwlwifi 0000:01:00.0: Q 6 is active and mapped to fifo 2 ra_tid 0x0000 [0,0]
  [ 3106.770002] iwlwifi 0000:01:00.0: Q 7 is active and mapped to fifo 5 ra_tid 0x0000 [0,0]
  [ 3106.770063] iwlwifi 0000:01:00.0: Q 8 is active and mapped to fifo 4 ra_tid 0x0000 [0,0]
  [ 3106.770124] iwlwifi 0000:01:00.0: Q 9 is active and mapped to fifo 7 ra_tid 0x0000 [246,246]
  [ 3106.770184] iwlwifi 0000:01:00.0: Q 10 is active and mapped to fifo 5 ra_tid 0x0000 [0,0]
  [ 3106.770246] iwlwifi 0000:01:00.0: Q 11 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
  [ 3106.770306] iwlwifi 0000:01:00.0: Q 12 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
  [ 3106.770366] iwlwifi 0000:01:00.0: Q 13 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
  [ 3106.770426] iwlwifi 0000:01:00.0: Q 14 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
  [ 3106.770486] iwlwifi 0000:01:00.0: Q 15 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
  [ 3106.770547] iwlwifi 0000:01:00.0: Q 16 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
  [ 3106.770607] iwlwifi 0000:01:00.0: Q 17 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
  [ 3106.770669] iwlwifi 0000:01:00.0: Q 18 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
  [ 3106.770729] iwlwifi 0000:01:00.0: Q 19 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
  [ 7065.094473] iwlwifi 0000:01:00.0: fail to flush all tx fifo queues Q 2
  [ 7065.094487] iwlwifi 0000:01:00.0: Current SW read_ptr 224 write_ptr 45
  [ 7065.094519] iwl data: 00000000: 00 00 00 00 00 00 00 00 ff ff 00 00 00 00 00 00  ................
  [ 7065.094537] iwlwifi 0000:01:00.0: FH TRBs(0) = 0x00000000
  [ 7065.094555] iwlwifi 0000:01:00.0: FH TRBs(1) = 0x801020ef
  [ 7065.094572] iwlwifi 0000:01:00.0: FH TRBs(2) = 0x00000000
  [ 7065.094589] iwlwifi 0000:01:00.0: FH TRBs(3) = 0x8030003f
  [ 7065.094607] iwlwifi 0000:01:00.0: FH TRBs(4) = 0x00000000
  [ 7065.094624] iwlwifi 0000:01:00.0: FH TRBs(5) = 0x00000000
  [ 7065.094641] iwlwifi 0000:01:00.0: FH TRBs(6) = 0x00000000
  [ 7065.094658] iwlwifi 0000:01:00.0: FH TRBs(7) = 0x007090a2
  [ 7065.094720] iwlwifi 0000:01:00.0: Q 0 is active and mapped to fifo 3 ra_tid 0x0000 [64,64]
  [ 7065.094781] iwlwifi 0000:01:00.0: Q 1 is active and mapped to fifo 2 ra_tid 0x0000 [0,0]
  [ 7065.094841] iwlwifi 0000:01:00.0: Q 2 is active and mapped to fifo 1 ra_tid 0x0000 [224,45]
  [ 7065.094901] iwlwifi 0000:01:00.0: Q 3 is active and mapped to fifo 0 ra_tid 0x0000 [0,0]
  [ 7065.094961] iwlwifi 0000:01:00.0: Q 4 is active and mapped to fifo 0 ra_tid 0x0000 [0,0]
  [ 7065.095021] iwlwifi 0000:01:00.0: Q 5 is active and mapped to fifo 4 ra_tid 0x0000 [0,0]
  [ 7065.095081] iwlwifi 0000:01:00.0: Q 6 is active and mapped to fifo 2 ra_tid 0x0000 [0,0]
  [ 7065.095142] iwlwifi 0000:01:00.0: Q 7 is active and mapped to fifo 5 ra_tid 0x0000 [0,0]
  [ 7065.095203] iwlwifi 0000:01:00.0: Q 8 is active and mapped to fifo 4 ra_tid 0x0000 [0,0]
  [ 7065.095265] iwlwifi 0000:01:00.0: Q 9 is active and mapped to fifo 7 ra_tid 0x0000 [163,163]
  [ 7065.095324] iwlwifi 0000:01:00.0: Q 10 is active and mapped to fifo 5 ra_tid 0x0000 [0,0]
  [ 7065.095386] iwlwifi 0000:01:00.0: Q 11 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
  [ 7065.095446] iwlwifi 0000:01:00.0: Q 12 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
  [ 7065.095507] iwlwifi 0000:01:00.0: Q 13 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
  [ 7065.095567] iwlwifi 0000:01:00.0: Q 14 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
  [ 7065.095628] iwlwifi 0000:01:00.0: Q 15 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
  [ 7065.095688] iwlwifi 0000:01:00.0: Q 16 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
  [ 7065.095749] iwlwifi 0000:01:00.0: Q 17 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
  [ 7065.095809] iwlwifi 0000:01:00.0: Q 18 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
  [ 7065.095869] iwlwifi 0000:01:00.0: Q 19 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: linux-image-3.13.0-4-generic 3.13.0-4.19
  ProcVersionSignature: Ubuntu 3.13.0-4.19-generic 3.13.0-rc8
  Uname: Linux 3.13.0-4-generic x86_64
  ApportVersion: 2.13.1-0ubuntu1
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  caravena   2037 F.... pulseaudio
   /dev/snd/pcmC0D0p:   caravena   2037 F...m pulseaudio
  CRDA:
   country CL:
   	(2402 - 2482 @ 40), (N/A, 20)
   	(5170 - 5250 @ 40), (N/A, 20)
   	(5250 - 5330 @ 40), (N/A, 20), DFS
   	(5735 - 5835 @ 40), (N/A, 20)
  CurrentDesktop: GNOME
  Date: Mon Jan 20 09:19:41 2014
  HibernationDevice: RESUME=UUID=360bd2d2-4f44-4311-86d6-4781ac81ee87
  InstallationDate: Installed on 2013-12-13 (37 days ago)
  InstallationMedia: Ubuntu-GNOME 14.04 "Trusty Tahr" - Alpha amd64 (20131213)
  MachineType: SAMSUNG ELECTRONICS CO., LTD. 530U3C/530U4C
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/@/boot/vmlinuz-3.13.0-4-generic root=UUID=0c67119c-ddae-476a-b510-142ec598f691 ro rootflags=subvol=@ quiet splash vt.handoff=7
  RelatedPackageVersions:
   linux-restricted-modules-3.13.0-4-generic N/A
   linux-backports-modules-3.13.0-4-generic  N/A
   linux-firmware                            1.121
  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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