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[Sworddragon <1359754@xxxxxxxxxxxxxxxxxx>]

Public bug reported:

I'm using Ubuntu 14.10 dev with linux-image-generic 3.16.0.9.10 and as already mentioned in the other ticket (https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1325819) I'm noticing a performance loss in booting time of a few seconds with newer versions of the kernel. But interestingly one linked kernel in the other ticket (http://kernel.ubuntu.com/~jsalisbury/lp1325819/ -> 3.13.0-031300rc3-generic) doesn't have this problem. In the attachments are 2 dmesg logs of the different kernels. As they show the 3.13.0-031300rc3-generic was ~2 seconds faster with loading the nvidia module (last lines in dmesg) than the current kernel. I'm wondering why there is this difference between those kernels in booting time.
--- 
AlsaVersion: Advanced Linux Sound Architecture Driver Version k3.16.0-9-generic.
ApportVersion: 2.14.6-0ubuntu2
Architecture: amd64
AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/hwC1D0', '/dev/snd/pcmC1D8p', '/dev/snd/pcmC1D7p', '/dev/snd/pcmC1D3p', '/dev/snd/controlC1', '/dev/snd/by-path', '/dev/snd/hwC0D0', '/dev/snd/pcmC0D2c', '/dev/snd/pcmC0D0c', '/dev/snd/pcmC0D0p', '/dev/snd/controlC0', '/dev/snd/timer'] failed with exit code 1:
BootDmesg: (Nothing has been logged yet.)
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
CurrentDesktop: LXDE
DistroRelease: Ubuntu 14.10
EcryptfsInUse: Yes
HibernationDevice: RESUME=UUID=23b2ee46-5930-41bc-a3e5-33800a236db2
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-3.16.0-9-generic root=UUID=05338ff8-a226-421b-90a4-1dd45199f783 ro elevator=cfq
ProcVersionSignature: Ubuntu 3.16.0-9.14-generic 3.16.1
RelatedPackageVersions:
 linux-restricted-modules-3.16.0-9-generic N/A
 linux-backports-modules-3.16.0-9-generic  N/A
 linux-firmware                            1.132
RfKill: Error: [Errno 2] No such file or directory
Tags:  utopic
Uname: Linux 3.16.0-9-generic x86_64
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm audio cdrom dip lpadmin plugdev sambashare sudo wireshark
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.

** Affects: linux (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: apport-collected utopic

** Attachment added: "3_13.log"
   https://bugs.launchpad.net/bugs/1359754/+attachment/4183492/+files/3_13.log

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https://bugs.launchpad.net/bugs/1359754

Title:
  Booting time got slower with newer kernel versions

Status in “linux” package in Ubuntu:
  New

Bug description:
  I'm using Ubuntu 14.10 dev with linux-image-generic 3.16.0.9.10 and as already mentioned in the other ticket (https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1325819) I'm noticing a performance loss in booting time of a few seconds with newer versions of the kernel. But interestingly one linked kernel in the other ticket (http://kernel.ubuntu.com/~jsalisbury/lp1325819/ -> 3.13.0-031300rc3-generic) doesn't have this problem. In the attachments are 2 dmesg logs of the different kernels. As they show the 3.13.0-031300rc3-generic was ~2 seconds faster with loading the nvidia module (last lines in dmesg) than the current kernel. I'm wondering why there is this difference between those kernels in booting time.
  --- 
  AlsaVersion: Advanced Linux Sound Architecture Driver Version k3.16.0-9-generic.
  ApportVersion: 2.14.6-0ubuntu2
  Architecture: amd64
  AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/hwC1D0', '/dev/snd/pcmC1D8p', '/dev/snd/pcmC1D7p', '/dev/snd/pcmC1D3p', '/dev/snd/controlC1', '/dev/snd/by-path', '/dev/snd/hwC0D0', '/dev/snd/pcmC0D2c', '/dev/snd/pcmC0D0c', '/dev/snd/pcmC0D0p', '/dev/snd/controlC0', '/dev/snd/timer'] failed with exit code 1:
  BootDmesg: (Nothing has been logged yet.)
  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
  CurrentDesktop: LXDE
  DistroRelease: Ubuntu 14.10
  EcryptfsInUse: Yes
  HibernationDevice: RESUME=UUID=23b2ee46-5930-41bc-a3e5-33800a236db2
  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-3.16.0-9-generic root=UUID=05338ff8-a226-421b-90a4-1dd45199f783 ro elevator=cfq
  ProcVersionSignature: Ubuntu 3.16.0-9.14-generic 3.16.1
  RelatedPackageVersions:
   linux-restricted-modules-3.16.0-9-generic N/A
   linux-backports-modules-3.16.0-9-generic  N/A
   linux-firmware                            1.132
  RfKill: Error: [Errno 2] No such file or directory
  Tags:  utopic
  Uname: Linux 3.16.0-9-generic x86_64
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups: adm audio cdrom dip lpadmin plugdev sambashare sudo wireshark
  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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