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[benpicco <1501760@xxxxxxxxxxxxxxxxxx>]

Yes, it goes away if I boot 3.13.0-63-generic

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https://bugs.launchpad.net/bugs/1501760

Title:
  ftdi USB<->TTL adapter stops working with 3.13.0-65-generic

Status in linux package in Ubuntu:
  Triaged

Bug description:
  After yesterday's update I'm unable to connect to /dev/ttyUSB0, works
  fine when I boot 3.13.0-63-generic

  Affected devices:
   Bus 003 Device 005: ID 0403:bcda Future Technology Devices International, Ltd Stellaris ICDI Board
   Bus 003 Device 006: ID 0403:6001 Future Technology Devices International, Ltd FT232 USB-Serial (UART) IC

  This has already been reported as a bug in Python, but it doesn't just
  affect Python programs but everything trying to access the device.

  https://bugs.launchpad.net/ubuntu/+source/python2.7/+bug/1501240

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: linux-image-3.13.0-65-generic 3.13.0-65.105
  ProcVersionSignature: Ubuntu 3.13.0-65.105-generic 3.13.11-ckt26
  Uname: Linux 3.13.0-65-generic x86_64
  NonfreeKernelModules: nvidia
  ApportVersion: 2.14.1-0ubuntu3.15
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC1:  benpicco   2661 F.... pulseaudio
   /dev/snd/controlC0:  benpicco   2661 F.... pulseaudio
  CurrentDesktop: Unity
  Date: Thu Oct  1 15:21:24 2015
  HibernationDevice: RESUME=UUID=9b23d804-46bf-4b3b-a691-2b45363a9d0e
  InstallationDate: Installed on 2014-09-22 (374 days ago)
  InstallationMedia: Ubuntu 14.04.1 LTS "Trusty Tahr" - Release amd64 (20140722.2)
  IwConfig:
   eth0      no wireless extensions.
   
   lo        no wireless extensions.
  MachineType: To Be Filled By O.E.M. To Be Filled By O.E.M.
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-65-generic.efi.signed root=UUID=67abec1c-41a2-45e9-8772-4a5930f9e310 ro quiet splash vt.handoff=7
  RelatedPackageVersions:
   linux-restricted-modules-3.13.0-65-generic N/A
   linux-backports-modules-3.13.0-65-generic  N/A
   linux-firmware                             1.127.15
  RfKill:
   
  SourcePackage: linux
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 07/02/2014
  dmi.bios.vendor: American Megatrends Inc.
  dmi.bios.version: P1.30
  dmi.board.name: H81M-DGS R2.0
  dmi.board.vendor: ASRock
  dmi.chassis.asset.tag: To Be Filled By O.E.M.
  dmi.chassis.type: 3
  dmi.chassis.vendor: To Be Filled By O.E.M.
  dmi.chassis.version: To Be Filled By O.E.M.
  dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrP1.30:bd07/02/2014:svnToBeFilledByO.E.M.:pnToBeFilledByO.E.M.:pvrToBeFilledByO.E.M.:rvnASRock:rnH81M-DGSR2.0:rvr:cvnToBeFilledByO.E.M.:ct3:cvrToBeFilledByO.E.M.:
  dmi.product.name: To Be Filled By O.E.M.
  dmi.product.version: To Be Filled By O.E.M.
  dmi.sys.vendor: To Be Filled By O.E.M.

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