kernel-packages team mailing list archive

["Christopher M. Penalver" <christopher.m.penalver@xxxxxxxxx>]

Jonas G. Drange, could you please test the latest upstream kernel
available from the very top line at the top of the page (the release
names are irrelevant for testing, and please do not test the daily
folder) following https://wiki.ubuntu.com/Kernel/MainlineBuilds ? It
will allow additional upstream developers to examine the issue.

If the test did not allow you to test to the issue (ex. you couldn't boot into the OS) please make a comment in your report about this, and continue to test the next most recent kernel version until you can test to the issue. Once you've tested the upstream kernel, please comment on which kernel version specifically you tested. If this bug is fixed in the mainline kernel, please add the following tags by clicking on the yellow circle with a black pencil icon, next to the word Tags, located at the bottom of the report description:
kernel-fixed-upstream
kernel-fixed-upstream-X.Y-rcZ

Where XY and Z are numbers corresponding to the kernel version.

If the mainline kernel does not fix this bug, please add the following tags:
kernel-bug-exists-upstream
kernel-bug-exists-upstream-X.Y-rcZ

Please note, an error to install the kernel does not fit the criteria of
kernel-bug-exists-upstream.

Once testing of the upstream kernel is complete, please mark this bug's
Status as Confirmed. Please let us know your results.

Thank you for your understanding.

** Tags removed: bios-outdated-a10
** Tags added: latest-bios-a10

** Changed in: linux (Ubuntu)
   Importance: Low => Medium

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

-- 
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https://bugs.launchpad.net/bugs/1458839

Title:
  Poor Wi-Fi connectivity when connecting USB dock

Status in linux package in Ubuntu:
  Incomplete

Bug description:
  Reproduce:
  Insert USB dock (Kensington with usb sound card, ethernet card) cable into any USB port

  What happens:
  Wi-Fi connectivity worsens and eventually disconnects.
  Pinging an online target gives me 
  [1432638474.615293] 64 bytes from fra07s30-in-f5.1e100.net (173.194.112.101): icmp_seq=11 ttl=54 time=1172 ms
  [1432638474.636669] 64 bytes from fra07s30-in-f5.1e100.net (173.194.112.101): icmp_seq=12 ttl=54 time=185 ms
  [1432638475.496000] 64 bytes from fra07s30-in-f5.1e100.net (173.194.112.101): icmp_seq=13 ttl=54 time=44.3 ms
  [1432638477.638814] 64 bytes from fra07s30-in-f5.1e100.net (173.194.112.101): icmp_seq=14 ttl=54 time=1185 ms
  [1432638477.644744] 64 bytes from fra07s30-in-f5.1e100.net (173.194.112.101): icmp_seq=15 ttl=54 time=192 ms
  [1432638478.498248] 64 bytes from fra07s30-in-f5.1e100.net (173.194.112.101): icmp_seq=16 ttl=54 time=44.4 ms
  [1432638479.662460] 64 bytes from fra07s30-in-f5.1e100.net (173.194.112.101): icmp_seq=17 ttl=54 time=207 ms
  [1432638480.547434] 64 bytes from fra07s30-in-f5.1e100.net (173.194.112.101): icmp_seq=18 ttl=54 time=90.9 ms
  [1432638482.597835] 64 bytes from fra07s30-in-f5.1e100.net (173.194.112.101): icmp_seq=19 ttl=54 time=1140 ms
  [1432638482.601590] 64 bytes from fra07s30-in-f5.1e100.net (173.194.112.101): icmp_seq=20 ttl=54 time=144 ms
  [1432638484.648946] 64 bytes from fra07s30-in-f5.1e100.net (173.194.112.101): icmp_seq=21 ttl=54 time=1191 ms
  [1432638484.649794] 64 bytes from fra07s30-in-f5.1e100.net (173.194.112.101): icmp_seq=22 ttl=54 time=193 ms
  [1432638485.502967] 64 bytes from fra07s30-in-f5.1e100.net (173.194.112.101): icmp_seq=23 ttl=54 time=45.1 ms
  [1432638487.301295] 64 bytes from fra07s30-in-f5.1e100.net (173.194.112.101): icmp_seq=24 ttl=54 time=842 ms
  [1432638488.649794] 64 bytes from fra07s30-in-f5.1e100.net (173.194.112.101): icmp_seq=25 ttl=54 time=1191 ms
  [1432638488.662959] 64 bytes from fra07s30-in-f5.1e100.net (173.194.112.101): icmp_seq=26 ttl=54 time=196 ms
  [1432638489.514683] 64 bytes from fra07s30-in-f5.1e100.net (173.194.112.101): icmp_seq=27 ttl=54 time=46.7 ms
  [1432638491.653511] 64 bytes from fra07s30-in-f5.1e100.net (173.194.112.101): icmp_seq=28 ttl=54 time=1183 ms
  [1432638491.655011] 64 bytes from fra07s30-in-f5.1e100.net (173.194.112.101): icmp_seq=29 ttl=54 time=176 ms
  [1432638493.659119] 64 bytes from fra07s30-in-f5.1e100.net (173.194.112.101): icmp_seq=30 ttl=54 time=1179 ms
  [1432638493.664250] 64 bytes from fra07s30-in-f5.1e100.net (173.194.112.101): icmp_seq=31 ttl=54 time=177 ms
  [1432638494.534200] 64 bytes from fra07s30-in-f5.1e100.net (173.194.112.101): icmp_seq=32 ttl=54 time=45.9 ms
  …

  Disconnecting the USB cable restores the connectivity:
  [1432638514.584374] 64 bytes from fra07s30-in-f5.1e100.net (173.194.112.101): icmp_seq=52 ttl=54 time=48.5 ms
  [1432638515.577822] 64 bytes from fra07s30-in-f5.1e100.net (173.194.112.101): icmp_seq=53 ttl=54 time=40.1 ms
  [1432638516.579000] 64 bytes from fra07s30-in-f5.1e100.net (173.194.112.101): icmp_seq=54 ttl=54 time=39.9 ms
  [1432638517.580760] 64 bytes from fra07s30-in-f5.1e100.net (173.194.112.101): icmp_seq=55 ttl=54 time=40.5 ms
  [1432638518.583465] 64 bytes from fra07s30-in-f5.1e100.net (173.194.112.101): icmp_seq=56 ttl=54 time=41.4 ms
  [1432638519.583923] 64 bytes from fra07s30-in-f5.1e100.net (173.194.112.101): icmp_seq=57 ttl=54 time=40.1 ms
  …

  What should have happened:
  Connectivity should not be affected by a connected USB dock

  Steps taken to debug:
  * I've told NetworkManager not to manage the USB network card so that it appears unmanaged. This makes no difference.
  * I've tried older kernels, e.g. 3.14 with no luck
  * It does not matter what is connected to the dock

  ProblemType: Bug
  DistroRelease: Ubuntu 15.04
  Package: linux-image-3.19.0-18-generic 3.19.0-18.18
  ProcVersionSignature: Ubuntu 3.19.0-18.18-generic 3.19.6
  Uname: Linux 3.19.0-18-generic x86_64
  ApportVersion: 2.17.2-0ubuntu1.1
  Architecture: amd64
  AudioDevicesInUse:
   USER PID ACCESS COMMAND
   /dev/snd/controlC0:  jonas      1514 F.... pulseaudio
  CurrentDesktop: Unity
  Date: Tue May 26 13:08:44 2015
  DistributionChannelDescriptor:
   # This is a distribution channel descriptor
   # For more information see http://wiki.ubuntu.com/DistributionChannelDescriptor
   canonical-oem-somerville-precise-amd64-20120703-2
  EcryptfsInUse: Yes
  HibernationDevice: RESUME=UUID=7b9cb658-95dd-4e13-a587-d6d0d59ae7e4
  InstallationDate: Installed on 2013-08-27 (637 days ago)
  InstallationMedia: Ubuntu 12.04 "Precise" - Build amd64 LIVE Binary 20120703-15:08
  MachineType: Dell Inc. Dell System XPS L322X
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.19.0-18-generic root=UUID=221de9c1-f10a-4be4-9273-5c12864c8680 ro quiet splash vt.handoff=7
  RelatedPackageVersions:
   linux-restricted-modules-3.19.0-18-generic N/A
   linux-backports-modules-3.19.0-18-generic  N/A
   linux-firmware                             1.143.1
  SourcePackage: linux
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 05/15/2013
  dmi.bios.vendor: Dell Inc.
  dmi.bios.version: A09
  dmi.board.name: 0PJHXN
  dmi.board.vendor: Dell Inc.
  dmi.board.version: A00
  dmi.chassis.type: 8
  dmi.chassis.vendor: Dell Inc.
  dmi.chassis.version: 0.1
  dmi.modalias: dmi:bvnDellInc.:bvrA09:bd05/15/2013:svnDellInc.:pnDellSystemXPSL322X:pvr:rvnDellInc.:rn0PJHXN:rvrA00:cvnDellInc.:ct8:cvr0.1:
  dmi.product.name: Dell System XPS L322X
  dmi.sys.vendor: Dell Inc.

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