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[Brad Figg <brad.figg@xxxxxxxxxxxxx>]

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

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https://bugs.launchpad.net/bugs/1504237

Title:
  Serial port ttyS0 not working after automatic kernel upgrade

Status in linux package in Ubuntu:
  Confirmed

Bug description:
  After automatic upgrades on four machines the serial port stopped working
  I did "apt-get purge linux-image-3.13.0-65-generic" and the serial port is functional again

  All of them were working OK on:
  Linux version 3.13.0-63-generic (buildd@lgw01-18) (gcc version 4.8.2 (Ubuntu 4.8.2-19ubuntu1) ) #103-Ubuntu SMP Fri Aug 14 21:42:59 UTC 2015 (Ubuntu 3.13.0-63.103-generic 3.13.11-ckt25)

  And failed after the automatic install of:
  Linux version 3.13.0-65-generic (buildd@lgw01-55) (gcc version 4.8.2 (Ubuntu 4.8.2-19ubuntu1) ) #105-Ubuntu SMP Mon Sep 21 18:50:58 UTC 2015 (Ubuntu 3.13.0-65.105-generic 3.13.11-ckt26)

  The ports are used by a KVM VM via TCP using socat and on two
  different motherboards/CPUs

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: linux-image-3.13.0-65-generic (not installed)
  ProcVersionSignature: Ubuntu 3.13.0-63.103-generic 3.13.11-ckt25
  Uname: Linux 3.13.0-63-generic x86_64
  AlsaVersion: Advanced Linux Sound Architecture Driver Version k3.13.0-63-generic.
  AplayDevices: Error: [Errno 2] No such file or directory: 'aplay'
  ApportVersion: 2.14.1-0ubuntu3.15
  Architecture: amd64
  ArecordDevices: Error: [Errno 2] No such file or directory: 'arecord'
  AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/by-path', '/dev/snd/controlC0', '/dev/snd/hwC0D0', '/dev/snd/hwC0D2', '/dev/snd/pcmC0D0c', '/dev/snd/pcmC0D0p', '/dev/snd/pcmC0D2c', '/dev/snd/pcmC0D3p', '/dev/snd/seq', '/dev/snd/timer'] failed with exit code 1:
  CRDA: Error: [Errno 2] No such file or directory: 'iw'
  Card0.Amixer.info: Error: [Errno 2] No such file or directory: 'amixer'
  Card0.Amixer.values: Error: [Errno 2] No such file or directory: 'amixer'
  Date: Thu Oct  8 17:09:19 2015
  EcryptfsInUse: Yes
  InstallationDate: Installed on 2015-03-16 (205 days ago)
  InstallationMedia: Ubuntu-Server 14.04.1 LTS "Trusty Tahr" - Release amd64 (20140722.3)
  Lsusb:
   Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
   Bus 001 Device 004: ID 062a:0000 Creative Labs Optical mouse
   Bus 001 Device 003: ID 04d9:1603 Holtek Semiconductor, Inc. Keyboard
   Bus 001 Device 002: ID 05e3:0608 Genesys Logic, Inc. USB-2.0 4-Port HUB
   Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
  MachineType: To Be Filled By O.E.M. To Be Filled By O.E.M.
  ProcEnviron:
   TERM=xterm
   PATH=(custom, no user)
   XDG_RUNTIME_DIR=<set>
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/@/vmlinuz-3.13.0-63-generic.efi.signed root=UUID=5cdd01fa-ca5c-4ef8-a387-e318087bac86 ro rootflags=subvol=@
  RelatedPackageVersions:
   linux-restricted-modules-3.13.0-63-generic N/A
   linux-backports-modules-3.13.0-63-generic  N/A
   linux-firmware                             1.127.15
  RfKill: Error: [Errno 2] No such file or directory: 'rfkill'
  SourcePackage: linux
  UpgradeStatus: No upgrade log present (probably fresh install)
  WifiSyslog:
   Oct  8 11:37:56 vantage05 dhclient: DHCPREQUEST of 192.168.4.101 on p1p1 to 192.168.4.1 port 67 (xid=0x1b05e146)
   Oct  8 11:37:57 vantage05 dhclient: DHCPACK of 192.168.4.101 from 192.168.4.1
   Oct  8 11:37:57 vantage05 dhclient: bound to 192.168.4.101 -- renewal in 37939 seconds.
   Oct  8 12:35:12 vantage05 kernel: [188005.853062] [drm:vlv_set_rps_idle] *ERROR* timed out waiting for Punit
  dmi.bios.date: 11/04/2014
  dmi.bios.vendor: American Megatrends Inc.
  dmi.bios.version: P1.70
  dmi.board.name: Q1900B-ITX
  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.:bvrP1.70:bd11/04/2014:svnToBeFilledByO.E.M.:pnToBeFilledByO.E.M.:pvrToBeFilledByO.E.M.:rvnASRock:rnQ1900B-ITX: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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