** Changed in: linux (Ubuntu)
   Importance: Critical => Medium

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

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https://bugs.launchpad.net/bugs/1429306

Title:
  Sending MIDI directly out of Soundcard causes lock up

Status in linux package in Ubuntu:
  Incomplete

Bug description:
  With my HP ENVY TouchSmart 15-j144na Notebook PC, after sending a
  number of MIDI notes out of my NI AudioKontrol 1 sound card my system
  locks up completely and needs to be hard reset.

  This problem appears to occur no matter what tool I use to send MIDI
  out of the soundcards port.

  Upon crashing:
  - screen goes black but backlight is left on.
  - Caps lock key begins to flash

  ProblemType: Bug
  DistroRelease: Ubuntu 14.10
  Package: linux-image-3.16.0-31-lowlatency 3.16.0-31.41
  ProcVersionSignature: Ubuntu 3.16.0-31.41-lowlatency 3.16.7-ckt5
  Uname: Linux 3.16.0-31-lowlatency x86_64
  NonfreeKernelModules: wl
  ApportVersion: 2.14.7-0ubuntu8.2
  Architecture: amd64
  AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/by-id', 
'/dev/snd/midiC2D0', '/dev/snd/pcmC2D0c', '/dev/snd/pcmC2D0p', 
'/dev/snd/controlC2', '/dev/snd/hwC1D0', '/dev/snd/pcmC1D0c', 
'/dev/snd/pcmC1D0p', '/dev/snd/controlC1', '/dev/snd/by-path', 
'/dev/snd/hwC0D0', '/dev/snd/pcmC0D8p', '/dev/snd/pcmC0D7p', 
'/dev/snd/pcmC0D3p', '/dev/snd/controlC0', '/dev/snd/seq', '/dev/snd/timer'] 
failed with exit code 1:
  CurrentDesktop: Unity
  Date: Fri Mar  6 23:48:36 2015
  HibernationDevice: RESUME=UUID=a936a653-2638-4e98-9326-2067c04324bb
  InstallationDate: Installed on 2014-12-07 (89 days ago)
  InstallationMedia: Ubuntu 14.10 "Utopic Unicorn" - Release amd64 (20141022.1)
  MachineType: Hewlett-Packard HP ENVY TS 15 Notebook PC
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.16.0-31-lowlatency 
root=UUID=0c56b1a0-831d-4cfa-b181-46b2e7fca4f2 ro quiet splash vt.handoff=7
  PulseList: Error: command ['pacmd', 'list'] failed with exit code 1: No 
PulseAudio daemon running, or not running as session daemon.
  RelatedPackageVersions:
   linux-restricted-modules-3.16.0-31-lowlatency N/A
   linux-backports-modules-3.16.0-31-lowlatency  N/A
   linux-firmware                                1.138.1
  SourcePackage: linux
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 06/10/2014
  dmi.bios.vendor: Insyde
  dmi.bios.version: F.63
  dmi.board.asset.tag: Type2 - Board Asset Tag
  dmi.board.name: 1967
  dmi.board.vendor: Hewlett-Packard
  dmi.board.version: KBC Version 93.51
  dmi.chassis.asset.tag: 5CG439469N
  dmi.chassis.type: 10
  dmi.chassis.vendor: Hewlett-Packard
  dmi.chassis.version: Chassis Version
  dmi.modalias: 
dmi:bvnInsyde:bvrF.63:bd06/10/2014:svnHewlett-Packard:pnHPENVYTS15NotebookPC:pvr0981110000405E00000320100:rvnHewlett-Packard:rn1967:rvrKBCVersion93.51:cvnHewlett-Packard:ct10:cvrChassisVersion:
  dmi.product.name: HP ENVY TS 15 Notebook PC
  dmi.product.version: 0981110000405E00000320100
  dmi.sys.vendor: Hewlett-Packard

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