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[a1291762 <1547838@xxxxxxxxxxxxxxxxxx>]

Sigh. I was forgetting about the linux-image-extra package. This proved
to make a difference. Indeed, the post-Saucy versions that were
succeeding were only doing so because the image-extra package was
missing. Strangely, the USB dongle worked without that package but
clearly there's an interaction with something else that needs a module
from that package.

Armed with this new knowledge, I re-tested some of the builds I had
tested previously (now with image-extra) and found this.

3.9.0-0      - good*
3.11.0-26  - bad

These are the first and last kernels of Saucy. The first one does not
have an image-extra (the image package is larger). The last one does
have an image-extra. I guess some time during Saucy, the packaging was
changed?

My testing yesterday was booting with the USB dongle inserted (so that
networking config could be applied during boot, similarly to how I
intend to run the system). Today, I have been inserting the dongle after
the system boots. I have attached netconsole5.log, which shows the
kernel warning/error I got when I plugged the dongle in (on kernel
3.9.0-0). Note that despite this output, the system continued to run
just fine.


** Attachment added: "netconsole5.log"
   https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1547838/+attachment/4612938/+files/netconsole5.log

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https://bugs.launchpad.net/bugs/1547838

Title:
  ADMtek ADM8511 "Pegasus II" USB Ethernet causes oops

Status in linux package in Ubuntu:
  Incomplete

Bug description:
  This is a rather old USB ethernet adapter. It worked fine for me with
  older distributions (including Ubuntu 10.04). I noticed it causing
  problems after upgrading to 14.04 and stopped using it as a result
  (since I needed reliable USB ethernet for work). I was also not
  completely sure if it was this device causing the issue or interplay
  between this device and a number of other networking USB devices that
  were used at work.

  I'd like to use this ethernet adapter at home but the machine is
  running Ubuntu 14.04 and the issue persists.

  I have collected some information that might help. I'm happy to try
  more things to collect information if that will help.

  I'm running Ubuntu 14.04 server 64-bit. I just rebooted so I'm running
  the latest updates.

  I was told to run ubuntu-bug linux but I'm not sure how much useful
  stuff is included in that. I'm including the kernel log which has some
  bad stuff happening in it. Not sure if it got the system-freezing oops
  or just the errors leading up to that.

  It feels like a bug in the driver that corrupts memory because I see
  issues with network-related things (eg. a ping crashed, but the next
  ping didn't), leading to a full-system freeze.

  This machine has been happily running Ubuntu for a looong time (though
  it was only recently upgraded to Ubuntu 14.04, previously it had been
  running 10.04). I have not had stability issues with the machine but
  plugging in the USB Ethernet reliably makes it freeze within minutes.
  The symptoms also match what I saw on my machine at work.

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: linux-image-3.19.0-49-generic 3.19.0-49.55~14.04.1
  ProcVersionSignature: Ubuntu 3.19.0-49.55~14.04.1-generic 3.19.8-ckt12
  Uname: Linux 3.19.0-49-generic x86_64
  ApportVersion: 2.14.1-0ubuntu3.19
  Architecture: amd64
  Date: Sat Feb 20 21:23:29 2016
  InstallationDate: Installed on 2015-12-31 (50 days ago)
  InstallationMedia: Ubuntu-Server 14.04.3 LTS "Trusty Tahr" - Beta amd64 (20150805)
  SourcePackage: linux-lts-vivid
  UpgradeStatus: No upgrade log present (probably fresh install)
  --- 
  AlsaVersion: Advanced Linux Sound Architecture Driver Version k3.19.0-49-generic.
  AplayDevices: Error: [Errno 2] No such file or directory
  ApportVersion: 2.14.1-0ubuntu3.19
  Architecture: amd64
  ArecordDevices: Error: [Errno 2] No such file or directory
  AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/by-path', '/dev/snd/hwC0D1', '/dev/snd/hwC0D0', '/dev/snd/pcmC0D2c', '/dev/snd/pcmC0D2p', '/dev/snd/pcmC0D1p', '/dev/snd/pcmC0D0c', '/dev/snd/pcmC0D0p', '/dev/snd/controlC0', '/dev/snd/seq', '/dev/snd/timer'] failed with exit code 1:
  CRDA: Error: [Errno 2] No such file or directory
  Card0.Amixer.info: Error: [Errno 2] No such file or directory
  Card0.Amixer.values: Error: [Errno 2] No such file or directory
  DistroRelease: Ubuntu 14.04
  HibernationDevice: RESUME=UUID=0cffa533-89ec-44d8-b5f9-6efe69c1b955
  InstallationDate: Installed on 2015-12-31 (67 days ago)
  InstallationMedia: Ubuntu-Server 14.04.3 LTS "Trusty Tahr" - Beta amd64 (20150805)
  MachineType: Hewlett-Packard HP EliteBook 8530w
  Package: linux (not installed)
  ProcFB: 0 nouveaufb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.19.0-49-generic root=UUID=d4c67c71-679c-4b9d-8e20-848149e8aedf ro debug ignore_loglevel crashkernel=384M-:128M
  ProcVersionSignature: Ubuntu 3.19.0-49.55~14.04.1-generic 3.19.8-ckt12
  RelatedPackageVersions:
   linux-restricted-modules-3.19.0-49-generic N/A
   linux-backports-modules-3.19.0-49-generic  N/A
   linux-firmware                             1.127.20
  RfKill: Error: [Errno 2] No such file or directory
  Tags:  trusty
  Uname: Linux 3.19.0-49-generic x86_64
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups:
   
  WifiSyslog:
   
  _MarkForUpload: True
  dmi.bios.date: 06/08/2010
  dmi.bios.vendor: Hewlett-Packard
  dmi.bios.version: 68PDV Ver. F.12
  dmi.board.name: 30E7
  dmi.board.vendor: Hewlett-Packard
  dmi.board.version: KBC Version 90.27
  dmi.chassis.type: 10
  dmi.chassis.vendor: Hewlett-Packard
  dmi.modalias: dmi:bvnHewlett-Packard:bvr68PDVVer.F.12:bd06/08/2010:svnHewlett-Packard:pnHPEliteBook8530w:pvrF.12:rvnHewlett-Packard:rn30E7:rvrKBCVersion90.27:cvnHewlett-Packard:ct10:cvr:
  dmi.product.name: HP EliteBook 8530w
  dmi.product.version: F.12
  dmi.sys.vendor: Hewlett-Packard

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