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[Sworddragon <1325819@xxxxxxxxxxxxxxxxxx>]

I haven't noticed the last time any issues. Also on testing this with
the kernel 3.16.0.9.10 the booting time is stable and nothing hangs
anymore. But the issue that the booting time in generic is slower than
some kernels before does still exist. But I have opened another report
for this: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1359754

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

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https://bugs.launchpad.net/bugs/1325819

Title:
  I/O performance problems with kernel 3.15.x

Status in “linux” package in Ubuntu:
  Fix Released

Bug description:
  I'm using Ubuntu 14.10 dev with linux-image-generic 3.15.0.5.6 and after the kernel 3.15.x was installed I noticed some I/O problems after a reboot. I'm noticing that now on every boot my hard disk will stop multiple times for a short time and logging out from the console does sometimes hang a few seconds.
  --- 
  AlsaVersion: Advanced Linux Sound Architecture Driver Version k3.15.0-5-generic.
  ApportVersion: 2.14.3-0ubuntu1
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/pcmC0D0p:   root       2613 F...m plugin-containe
   /dev/snd/controlC0:  root       2613 F.... plugin-containe
   /dev/snd/timer:      root       2613 f.... plugin-containe
  CRDA: Error: [Errno 2] No such file or directory
  Card0.Amixer.info:
   Card hw:0 'SB'/'HDA ATI SB at 0xfcff4000 irq 16'
     Mixer name	: 'Realtek ALC662 rev1'
     Components	: 'HDA:10ec0662,18497662,00100101'
     Controls      : 36
     Simple ctrls  : 18
  Card1.Amixer.info:
   Card hw:1 'NVidia'/'HDA NVidia at 0xfe97c000 irq 19'
     Mixer name	: 'Nvidia GPU 42 HDMI/DP'
     Components	: 'HDA:10de0042,14583555,00100100'
     Controls      : 21
     Simple ctrls  : 3
  CurrentDmesg:
   Error: command ['sh', '-c', 'dmesg | comm -13 --nocheck-order /var/log/dmesg -'] failed with exit code 1: comm: /var/log/dmesg: No such file or directory
   dmesg: write failed: Broken pipe
  DistroRelease: Ubuntu 14.10
  EcryptfsInUse: Yes
  IwConfig: Error: [Errno 2] No such file or directory
  Lsusb: Error: [Errno 2] No such file or directory
  MachineType: To Be Filled By O.E.M. To Be Filled By O.E.M.
  NonfreeKernelModules: nvidia
  Package: linux (not installed)
  ProcEnviron:
   TERM=xterm
   PATH=(custom, no user)
   LANG=de_DE.UTF-8
   SHELL=/bin/bash
  ProcFB: 0 VESA VGA
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.15.0-5-generic root=UUID=05338ff8-a226-421b-90a4-1dd45199f783 ro elevator=cfq
  ProcVersionSignature: Ubuntu 3.15.0-5.10-generic 3.15.0-rc8
  RfKill: Error: [Errno 2] No such file or directory
  Tags:  utopic
  Uname: Linux 3.15.0-5-generic x86_64
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups:
   
  WifiSyslog:
   
  _MarkForUpload: True
  dmi.bios.date: 10/02/2013
  dmi.bios.vendor: American Megatrends Inc.
  dmi.bios.version: P1.40
  dmi.board.asset.tag: BC5FF4739C55
  dmi.board.name: 960GM/U3S3 FX
  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.:bvrP1.40:bd10/02/2013:svnToBeFilledByO.E.M.:pnToBeFilledByO.E.M.:pvrToBeFilledByO.E.M.:rvnASRock:rn960GM/U3S3FX: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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