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

Brendan, thank you for reporting this and helping make Ubuntu better. Could you please test the latest upstream kernel available from the very top line at the top of the page (not the daily folder) following https://wiki.ubuntu.com/KernelMainlineBuilds ? It will allow additional upstream developers to examine 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:
kernel-fixed-upstream
kernel-fixed-upstream-VERSION-NUMBER

where VERSION-NUMBER is the version number of the kernel you tested exactly shown as:
kernel-fixed-upstream-3.18-rc1

This can be done by clicking on the yellow circle with a black pencil
icon next to the word Tags located at the bottom of the bug description.

If the mainline kernel does not fix this bug, please add the following tags:
kernel-bug-exists-upstream
kernel-bug-exists-upstream-VERSION-NUMBER

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 added: latest-bios-p01-a2

** Changed in: linux (Ubuntu)
   Importance: Undecided => High

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

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https://bugs.launchpad.net/bugs/1385679

Title:
  zd1211rw Stops working after some time

Status in “linux” package in Ubuntu:
  Incomplete

Bug description:
  I'm using this USB Wifi dongle (according to lsusb):

  Bus 001 Device 004: ID 050d:705c Belkin Components F5D7050 Wireless G
  Adapter v4000 [Zydas ZD1211B]

  and dmesg has this description of the device:

  [   41.689339] zd1211rw 3-5:1.0: firmware version 4725
  [   41.749390] zd1211rw 3-5:1.0: zd1211b chip 050d:705c v4810 full 00-1c-df AL2230_RF pa0 g--NS

  At some point, with no pattern I can discern, it stops working, and starts spitting this into dmesg:
  [  243.346810] zd1211rw 3-5:1.0: error ioread32(CR_REG1): -110
  [  243.450915] zd1211rw 3-5:1.0: error ioread32(CR_REG1): -110
  [  243.502925] zd1211rw 3-5:1.0: error ioread32(CR_REG1): -110
  [  243.554961] zd1211rw 3-5:1.0: error ioread32(CR_REG1): -110
  (.. and so on)

  110 is ETIMEDOUT btw.

  If I remove and plug back in, I see

  [ 4638.146279] usb 3-5: USB disconnect, device number 3
  [ 4659.745881] zd1211rw 3-5:1.0: error ioread32(CR_REG1): -19
  [ 4659.745957] zd1211rw 3-5:1.0: error ioread32(CR_REG1): -19
  [ 4659.745967] zd1211rw 3-5:1.0: error ioread32(CR_REG1): -19
  [ 4659.745971] zd1211rw 3-5:1.0: error ioread32(CR_REG1): -19
  [ 4659.745974] zd1211rw 3-5:1.0: error ioread32(CR_REG1): -19
  (.. and so on)

  The only way I've found of fixing the problem is to reboot. It is
  necessary to reboot via the "reisub" method as when this problem
  occurs shutting down "properly" gets stuck while the Ubuntu splash is
  on the screen. I can't seem to find a way to dump the kernel log at
  that time, could anyone tell me how?

  This is probably a duplicate of #406484, but according to the kernel
  bug duplicate policy
  (https://wiki.ubuntu.com/Kernel/Policies/DuplicateBugs), I've created
  a separate one.

  Sorry, I don't really have time to test a newer/upstream kernel right
  now but I'll get back if I get a chance. Also, it's just occured to me
  that it's not impossible that my hardware is faulty.

  I've attached a dmesg from when the problem is occuring.

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: linux-image-3.13.0-37-generic 3.13.0-37.64
  ProcVersionSignature: Ubuntu 3.13.0-37.64-generic 3.13.11.7
  Uname: Linux 3.13.0-37-generic x86_64
  NonfreeKernelModules: nvidia
  ApportVersion: 2.14.1-0ubuntu3.5
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  brendan    2788 F.... pulseaudio
  CurrentDesktop: Unity
  Date: Sat Oct 25 15:22:25 2014
  HibernationDevice: RESUME=UUID=65674c85-de86-4266-9693-856f2e8a81b0
  InstallationDate: Installed on 2014-06-02 (144 days ago)
  InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417)
  MachineType: Acer Aspire X1301
  ProcFB: 0 VESA VGA
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-37-generic root=UUID=a35b8a2e-aad4-4b9e-b3b3-fd7953f1f16f ro quiet splash vt.handoff=7
  RelatedPackageVersions:
   linux-restricted-modules-3.13.0-37-generic N/A
   linux-backports-modules-3.13.0-37-generic  N/A
   linux-firmware                             1.127.7
  SourcePackage: linux
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 11/06/2009
  dmi.bios.vendor: Phoenix Technologies, LTD
  dmi.bios.version: P01-A2
  dmi.board.name: WMCP78M
  dmi.board.vendor: Acer
  dmi.chassis.type: 3
  dmi.chassis.vendor: Acer
  dmi.modalias: dmi:bvnPhoenixTechnologies,LTD:bvrP01-A2:bd11/06/2009:svnAcer:pnAspireX1301:pvr:rvnAcer:rnWMCP78M:rvr:cvnAcer:ct3:cvr:
  dmi.product.name: Aspire X1301
  dmi.sys.vendor: Acer

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