kernel-packages team mailing list archive

[a1291762 <1547838@xxxxxxxxxxxxxxxxxx>]

Public bug reported:

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)

** Affects: linux-lts-vivid (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug trusty

** Attachment added: "kern.log"
   https://bugs.launchpad.net/bugs/1547838/+attachment/4576442/+files/kern.log

-- 
You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux-lts-vivid in Ubuntu.
https://bugs.launchpad.net/bugs/1547838

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

Status in linux-lts-vivid package in Ubuntu:
  New

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)

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