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[Bug 1529381] Re: Updating 14.04.3 to latest updates renders system unbootable


Carl Englund, the next step is to fully commit bisect from kernel
3.19.0-25 to 3.19.0-42 in order to identify the last good kernel commit,
followed immediately by the first bad one. This will allow for a more
expedited analysis of the root cause of your issue. Could you please do
this following https://wiki.ubuntu.com/Kernel/KernelBisection ?

Please note, finding adjacent kernel versions is not fully commit

After the offending commit (not kernel version) has been identified,
then please mark this report Status Confirmed.

Thank you for your understanding.

Helpful bug reporting tips:

** Tags removed: kernel-bug-exists-upstream-3.19.0-26 kernel-bug-exists-upstream-3.19.0-42 kernel-bug-exists-upstream-4.2.0-22 kernel-bug-exists-upstream-4.3.2 kernel-bug-exists-upstream-4.3.3
** Tags added: needs-bisect regression-update

** Attachment removed: "ProcEnviron.txt"

** Attachment removed: "Dependencies.txt"

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

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  Updating 14.04.3 to latest updates renders system unbootable

Status in linux package in Ubuntu:

Bug description:
  To reproduce (on this hardware)

  1) Install 14.04.3 LTS (Ubuntu or XUbuntu)
  2) Install updates
  3) Reboot

  The kernel used after update is 3.19.0-42. Booting with the kernel
  that came with the install image (3.19.0-25) works fine.

  This computer is a HP Compaq 6715s. I have looked at HPs support pages
  for BIOS updates for this model but none was available.

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: linux-image-3.19.0-42-generic 3.19.0-42.48~14.04.1
  ProcVersionSignature: Ubuntu 3.19.0-25.26~14.04.1-generic 3.19.8-ckt2
  Uname: Linux 3.19.0-25-generic x86_64
  ApportVersion: 2.14.1-0ubuntu3.19
  Architecture: amd64
  CurrentDesktop: XFCE
  Date: Sat Dec 26 16:36:30 2015
  InstallationDate: Installed on 2015-12-26 (0 days ago)
  InstallationMedia: Xubuntu 14.04.3 LTS "Trusty Tahr" - Beta amd64 (20150805)
  SourcePackage: linux-lts-vivid
  UpgradeStatus: No upgrade log present (probably fresh install)
  ApportVersion: 2.14.1-0ubuntu3.19
  Architecture: amd64
  AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/seq', '/dev/snd/timer'] failed with exit code 1:
  CurrentDesktop: XFCE
  DistroRelease: Ubuntu 14.04
  HibernationDevice: RESUME=UUID=522810df-638a-412b-9aab-791e2e2bc545
  InstallationDate: Installed on 2015-12-26 (0 days ago)
  InstallationMedia: Xubuntu 14.04.3 LTS "Trusty Tahr" - Beta amd64 (20150805)
  MachineType: Hewlett-Packard HP Compaq 6715s (RU655ET#AK8)
  Package: linux (not installed)
   Socket 0:
     no product info available
   Socket 0:
     no card
  ProcFB: 0 radeondrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.19.0-25-generic root=UUID=0dd333f9-6172-41eb-9472-a321d48c04eb ro quiet splash
  ProcVersionSignature: Ubuntu 3.19.0-25.26~14.04.1-generic 3.19.8-ckt2
   linux-restricted-modules-3.19.0-25-generic N/A
   linux-backports-modules-3.19.0-25-generic  N/A
   linux-firmware                             1.127.19
   0: phy0: Wireless LAN
   	Soft blocked: no
   	Hard blocked: no
  Tags:  trusty
  Uname: Linux 3.19.0-25-generic x86_64
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo
  WifiSyslog: Dec 27 13:38:38 michael wpa_supplicant[815]: wlan1: CTRL-EVENT-SCAN-STARTED
  _MarkForUpload: True
  dmi.bios.date: 03/26/2007
  dmi.bios.vendor: Hewlett-Packard
  dmi.bios.version: 68YTT Ver. F.03
  dmi.board.name: 30C2
  dmi.board.vendor: Hewlett-Packard
  dmi.board.version: KBC Version 71.21
  dmi.chassis.asset.tag: CNU7201T8J
  dmi.chassis.type: 10
  dmi.chassis.vendor: Hewlett-Packard
  dmi.modalias: dmi:bvnHewlett-Packard:bvr68YTTVer.F.03:bd03/26/2007:svnHewlett-Packard:pnHPCompaq6715s(RU655ET#AK8):pvrF.03:rvnHewlett-Packard:rn30C2:rvrKBCVersion71.21:cvnHewlett-Packard:ct10:cvr:
  dmi.product.name: HP Compaq 6715s (RU655ET#AK8)
  dmi.product.version: F.03
  dmi.sys.vendor: Hewlett-Packard

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