I tested with the 3.16.1-031601-generic #201408140014 from http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.16.1-utopic/
The kernel booted without any problems. However after a short time in the mentioned network the same error happend again. Following a snip from dmesg [ 158.868825] iwlwifi 0000:01:00.0: fail to flush all tx fifo queues Q 2 [ 158.868842] iwlwifi 0000:01:00.0: Current SW read_ptr 198 write_ptr 144 [ 158.868957] iwl data: 00000000: c0 ff 3f 00 00 00 00 00 00 00 00 00 00 00 00 00 ..?............. [ 158.869016] iwlwifi 0000:01:00.0: FH TRBs(0) = 0x00000000 [ 158.869117] iwlwifi 0000:01:00.0: FH TRBs(1) = 0x801020d5 [ 158.869189] iwlwifi 0000:01:00.0: FH TRBs(2) = 0x00000000 [ 158.869272] iwlwifi 0000:01:00.0: FH TRBs(3) = 0x80300025 [ 158.869332] iwlwifi 0000:01:00.0: FH TRBs(4) = 0x00000000 [ 158.869410] iwlwifi 0000:01:00.0: FH TRBs(5) = 0x00000000 [ 158.869489] iwlwifi 0000:01:00.0: FH TRBs(6) = 0x00000000 [ 158.869547] iwlwifi 0000:01:00.0: FH TRBs(7) = 0x0070905b [ 158.869714] iwlwifi 0000:01:00.0: Q 0 is active and mapped to fifo 3 ra_tid 0x0000 [38,38] [ 158.869873] iwlwifi 0000:01:00.0: Q 1 is active and mapped to fifo 2 ra_tid 0x0000 [0,0] [ 158.870040] iwlwifi 0000:01:00.0: Q 2 is active and mapped to fifo 1 ra_tid 0x0000 [198,144] [ 158.870205] iwlwifi 0000:01:00.0: Q 3 is active and mapped to fifo 0 ra_tid 0x0000 [0,0] [ 158.870366] iwlwifi 0000:01:00.0: Q 4 is active and mapped to fifo 0 ra_tid 0x0000 [0,0] [ 158.870532] iwlwifi 0000:01:00.0: Q 5 is active and mapped to fifo 4 ra_tid 0x0000 [0,0] [ 158.870693] iwlwifi 0000:01:00.0: Q 6 is active and mapped to fifo 2 ra_tid 0x0000 [0,0] [ 158.870859] iwlwifi 0000:01:00.0: Q 7 is active and mapped to fifo 5 ra_tid 0x0000 [0,0] [ 158.871026] iwlwifi 0000:01:00.0: Q 8 is active and mapped to fifo 4 ra_tid 0x0000 [0,0] [ 158.871192] iwlwifi 0000:01:00.0: Q 9 is active and mapped to fifo 7 ra_tid 0x0000 [92,92] [ 158.871358] iwlwifi 0000:01:00.0: Q 10 is active and mapped to fifo 5 ra_tid 0x0000 [0,0] [ 158.871512] iwlwifi 0000:01:00.0: Q 11 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0] [ 158.871678] iwlwifi 0000:01:00.0: Q 12 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0] [ 158.871838] iwlwifi 0000:01:00.0: Q 13 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0] [ 158.872004] iwlwifi 0000:01:00.0: Q 14 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0] [ 158.872170] iwlwifi 0000:01:00.0: Q 15 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0] [ 158.872336] iwlwifi 0000:01:00.0: Q 16 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0] [ 158.872503] iwlwifi 0000:01:00.0: Q 17 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0] [ 158.872669] iwlwifi 0000:01:00.0: Q 18 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0] [ 158.872866] iwlwifi 0000:01:00.0: Q 19 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0] [ 207.918913] iwlwifi 0000:01:00.0: fail to flush all tx fifo queues Q 2 [ 207.918919] iwlwifi 0000:01:00.0: Current SW read_ptr 192 write_ptr 130 [ 207.919005] iwl data: 00000000: ff ff 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ [ 207.919053] iwlwifi 0000:01:00.0: FH TRBs(0) = 0x00000000 [ 207.919095] iwlwifi 0000:01:00.0: FH TRBs(1) = 0x801020cf [ 207.919178] iwlwifi 0000:01:00.0: FH TRBs(2) = 0x00000000 [ 207.919212] iwlwifi 0000:01:00.0: FH TRBs(3) = 0x80300054 [ 207.919268] iwlwifi 0000:01:00.0: FH TRBs(4) = 0x00000000 [ 207.919354] iwlwifi 0000:01:00.0: FH TRBs(5) = 0x00000000 [ 207.919410] iwlwifi 0000:01:00.0: FH TRBs(6) = 0x00000000 [ 207.919495] iwlwifi 0000:01:00.0: FH TRBs(7) = 0x007090c9 [ 207.919725] iwlwifi 0000:01:00.0: Q 0 is active and mapped to fifo 3 ra_tid 0x0000 [85,85] [ 207.919925] iwlwifi 0000:01:00.0: Q 1 is active and mapped to fifo 2 ra_tid 0x0000 [0,0] [ 207.920095] iwlwifi 0000:01:00.0: Q 2 is active and mapped to fifo 1 ra_tid 0x0000 [192,130] [ 207.920265] iwlwifi 0000:01:00.0: Q 3 is active and mapped to fifo 0 ra_tid 0x0000 [0,0] [ 207.920434] iwlwifi 0000:01:00.0: Q 4 is active and mapped to fifo 0 ra_tid 0x0000 [0,0] [ 207.920604] iwlwifi 0000:01:00.0: Q 5 is active and mapped to fifo 4 ra_tid 0x0000 [0,0] [ 207.920766] iwlwifi 0000:01:00.0: Q 6 is active and mapped to fifo 2 ra_tid 0x0000 [0,0] [ 207.920958] iwlwifi 0000:01:00.0: Q 7 is active and mapped to fifo 5 ra_tid 0x0000 [0,0] [ 207.921125] iwlwifi 0000:01:00.0: Q 8 is active and mapped to fifo 4 ra_tid 0x0000 [0,0] [ 207.921292] iwlwifi 0000:01:00.0: Q 9 is active and mapped to fifo 7 ra_tid 0x0000 [202,202] [ 207.921459] iwlwifi 0000:01:00.0: Q 10 is active and mapped to fifo 5 ra_tid 0x0000 [0,0] [ 207.921633] iwlwifi 0000:01:00.0: Q 11 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0] [ 207.921795] iwlwifi 0000:01:00.0: Q 12 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0] [ 207.921989] iwlwifi 0000:01:00.0: Q 13 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0] [ 207.922159] iwlwifi 0000:01:00.0: Q 14 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0] [ 207.922329] iwlwifi 0000:01:00.0: Q 15 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0] [ 207.922498] iwlwifi 0000:01:00.0: Q 16 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0] [ 207.922662] iwlwifi 0000:01:00.0: Q 17 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0] [ 207.922881] iwlwifi 0000:01:00.0: Q 18 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0] [ 207.923076] iwlwifi 0000:01:00.0: Q 19 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0] [ 210.152333] wlan0: deauthenticating from 08:81:f4:55:b5:06 by local choice (Reason: 3=DEAUTH_LEAVING) [ 212.158751] iwlwifi 0000:01:00.0: fail to flush all tx fifo queues Q 2 [ 212.158757] iwlwifi 0000:01:00.0: Current SW read_ptr 10 write_ptr 168 [ 212.158841] iwl data: 00000000: 00 fc ff 03 00 00 00 00 00 00 00 00 00 00 00 00 ................ [ 212.158889] iwlwifi 0000:01:00.0: FH TRBs(0) = 0x00000000 [ 212.158943] iwlwifi 0000:01:00.0: FH TRBs(1) = 0x80102019 [ 212.158991] iwlwifi 0000:01:00.0: FH TRBs(2) = 0x00000000 [ 212.159045] iwlwifi 0000:01:00.0: FH TRBs(3) = 0x80300056 [ 212.159100] iwlwifi 0000:01:00.0: FH TRBs(4) = 0x00000000 [ 212.159154] iwlwifi 0000:01:00.0: FH TRBs(5) = 0x00000000 [ 212.159209] iwlwifi 0000:01:00.0: FH TRBs(6) = 0x00000000 [ 212.159263] iwlwifi 0000:01:00.0: FH TRBs(7) = 0x007090cf [ 212.159462] iwlwifi 0000:01:00.0: Q 0 is active and mapped to fifo 3 ra_tid 0x0000 [87,87] [ 212.159628] iwlwifi 0000:01:00.0: Q 1 is active and mapped to fifo 2 ra_tid 0x0000 [0,0] [ 212.159790] iwlwifi 0000:01:00.0: Q 2 is active and mapped to fifo 1 ra_tid 0x0000 [10,168] [ 212.159952] iwlwifi 0000:01:00.0: Q 3 is active and mapped to fifo 0 ra_tid 0x0000 [0,0] [ 212.160106] iwlwifi 0000:01:00.0: Q 4 is active and mapped to fifo 0 ra_tid 0x0000 [0,0] [ 212.160273] iwlwifi 0000:01:00.0: Q 5 is active and mapped to fifo 4 ra_tid 0x0000 [0,0] [ 212.160432] iwlwifi 0000:01:00.0: Q 6 is active and mapped to fifo 2 ra_tid 0x0000 [0,0] [ 212.160630] iwlwifi 0000:01:00.0: Q 7 is active and mapped to fifo 5 ra_tid 0x0000 [0,0] [ 212.160797] iwlwifi 0000:01:00.0: Q 8 is active and mapped to fifo 4 ra_tid 0x0000 [0,0] [ 212.160964] iwlwifi 0000:01:00.0: Q 9 is active and mapped to fifo 7 ra_tid 0x0000 [208,208] [ 212.161131] iwlwifi 0000:01:00.0: Q 10 is active and mapped to fifo 5 ra_tid 0x0000 [0,0] [ 212.161298] iwlwifi 0000:01:00.0: Q 11 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0] [ 212.161492] iwlwifi 0000:01:00.0: Q 12 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0] [ 212.161658] iwlwifi 0000:01:00.0: Q 13 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0] [ 212.161824] iwlwifi 0000:01:00.0: Q 14 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0] [ 212.161991] iwlwifi 0000:01:00.0: Q 15 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0] [ 212.162157] iwlwifi 0000:01:00.0: Q 16 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0] [ 212.162318] iwlwifi 0000:01:00.0: Q 17 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0] [ 212.162479] iwlwifi 0000:01:00.0: Q 18 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0] [ 212.162632] iwlwifi 0000:01:00.0: Q 19 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0] [ 214.170614] iwlwifi 0000:01:00.0: fail to flush all tx fifo queues Q 2 [ 214.170620] iwlwifi 0000:01:00.0: Current SW read_ptr 58 write_ptr 169 [ 214.170702] iwl data: 00000000: ff 03 00 00 00 00 00 00 00 00 00 fc 00 00 00 00 ................ [ 214.170758] iwlwifi 0000:01:00.0: FH TRBs(0) = 0x00000000 [ 214.170813] iwlwifi 0000:01:00.0: FH TRBs(1) = 0x80102049 [ 214.170869] iwlwifi 0000:01:00.0: FH TRBs(2) = 0x00000000 [ 214.170924] iwlwifi 0000:01:00.0: FH TRBs(3) = 0x80300057 [ 214.170979] iwlwifi 0000:01:00.0: FH TRBs(4) = 0x00000000 [ 214.171033] iwlwifi 0000:01:00.0: FH TRBs(5) = 0x00000000 [ 214.171088] iwlwifi 0000:01:00.0: FH TRBs(6) = 0x00000000 [ 214.171143] iwlwifi 0000:01:00.0: FH TRBs(7) = 0x007090cf [ 214.171313] iwlwifi 0000:01:00.0: Q 0 is active and mapped to fifo 3 ra_tid 0x0000 [88,88] [ 214.171484] iwlwifi 0000:01:00.0: Q 1 is active and mapped to fifo 2 ra_tid 0x0000 [0,0] [ 214.171653] iwlwifi 0000:01:00.0: Q 2 is active and mapped to fifo 1 ra_tid 0x0000 [58,169] [ 214.171821] iwlwifi 0000:01:00.0: Q 3 is active and mapped to fifo 0 ra_tid 0x0000 [0,0] [ 214.171990] iwlwifi 0000:01:00.0: Q 4 is active and mapped to fifo 0 ra_tid 0x0000 [0,0] [ 214.172160] iwlwifi 0000:01:00.0: Q 5 is active and mapped to fifo 4 ra_tid 0x0000 [0,0] [ 214.172328] iwlwifi 0000:01:00.0: Q 6 is active and mapped to fifo 2 ra_tid 0x0000 [0,0] [ 214.172497] iwlwifi 0000:01:00.0: Q 7 is active and mapped to fifo 5 ra_tid 0x0000 [0,0] [ 214.172666] iwlwifi 0000:01:00.0: Q 8 is active and mapped to fifo 4 ra_tid 0x0000 [0,0] [ 214.172829] iwlwifi 0000:01:00.0: Q 9 is active and mapped to fifo 7 ra_tid 0x0000 [208,208] [ 214.172993] iwlwifi 0000:01:00.0: Q 10 is active and mapped to fifo 5 ra_tid 0x0000 [0,0] [ 214.173156] iwlwifi 0000:01:00.0: Q 11 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0] [ 214.173325] iwlwifi 0000:01:00.0: Q 12 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0] [ 214.173494] iwlwifi 0000:01:00.0: Q 13 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0] [ 214.173663] iwlwifi 0000:01:00.0: Q 14 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0] [ 214.173832] iwlwifi 0000:01:00.0: Q 15 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0] [ 214.173995] iwlwifi 0000:01:00.0: Q 16 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0] [ 214.174148] iwlwifi 0000:01:00.0: Q 17 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0] [ 214.174310] iwlwifi 0000:01:00.0: Q 18 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0] [ 214.174473] iwlwifi 0000:01:00.0: Q 19 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0] ** Changed in: linux (Ubuntu) Status: Incomplete => Confirmed -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1356236 Title: [Samsung NP900X3C-A05DE] iwlwifi 0000:01:00.0: fail to flush all tx fifo queues Q 2 with Centrino Advanced-N 6235 wireless card Status in “linux” package in Ubuntu: Confirmed Bug description: The network I want to connect is a WPA-EAP wireless network called eduroam https://www.eduroam.org/ . My machine data: 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 ProblemType: Bug DistroRelease: Ubuntu 14.04 Package: linux-image-3.13.0-32-generic 3.13.0-32.57 ProcVersionSignature: Ubuntu 3.13.0-32.57-generic 3.13.11.4 Uname: Linux 3.13.0-32-generic x86_64 ApportVersion: 2.14.1-0ubuntu3.3 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: degenkolb 2203 F.... pulseaudio degenkolb 2587 F.... pulseaudio CurrentDesktop: KDE Date: Wed Aug 13 10:32:45 2014 EcryptfsInUse: Yes HibernationDevice: RESUME=UUID=d7406378-f782-4cab-80d9-4fe3c2f4c94c InstallationDate: Installed on 2013-12-05 (250 days ago) InstallationMedia: Kubuntu 13.10 "Saucy Salamander" - Release amd64 (20131016.1) MachineType: SAMSUNG ELECTRONICS CO., LTD. 900X3C/900X3D/900X4C/900X4D ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-32-generic root=UUID=04d6e506-7152-4b6c-b19f-3877e0710fc6 ro quiet splash vt.handoff=7 RelatedPackageVersions: linux-restricted-modules-3.13.0-32-generic N/A linux-backports-modules-3.13.0-32-generic N/A linux-firmware 1.127.5 SourcePackage: linux UpgradeStatus: Upgraded to trusty on 2014-06-18 (55 days ago) dmi.bios.date: 09/19/2012 dmi.bios.vendor: Phoenix Technologies Ltd. dmi.bios.version: P02ABK dmi.board.asset.tag: Base Board Asset Tag dmi.board.name: NP900X3C-A05DE 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.:bvrP02ABK:bd09/19/2012:svnSAMSUNGELECTRONICSCO.,LTD.:pn900X3C/900X3D/900X4C/900X4D:pvr0.1:rvnSAMSUNGELECTRONICSCO.,LTD.:rnNP900X3C-A05DE:rvrFAB1:cvnSAMSUNGELECTRONICSCO.,LTD.:ct9:cvr0.1: dmi.product.name: 900X3C/900X3D/900X4C/900X4D dmi.product.version: 0.1 dmi.sys.vendor: SAMSUNG ELECTRONICS CO., LTD. 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