kernel-packages team mailing list archive

["Christopher M. Penalver" <christopher.m.penalver@xxxxxxxxx>]

Kevin Brubeck Unhammer, the next step is to fully commit bisect from
kernel 4.2.8 to 4.4 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
bisecting.

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:
https://wiki.ubuntu.com/ReportingBugs

** Tags added: bios-outdated-o14kt19aus needs-bisect regression-release

** Tags removed: bios-outdated-o14kt19aus
** Tags added: latest-bios-o14kt19aus

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

-- 
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https://bugs.launchpad.net/bugs/1574178

Title:
  4.4.0-21 "gave up waiting for root device"

Status in linux package in Ubuntu:
  Incomplete

Bug description:
  On a Lenovo A740, after upgrading to Xenial I have to downgrade to
  kernel 4.2.0-35 in order to be able to boot at all.

  
  My current /etc/default/grub:

  # If you change this file, run 'update-grub' afterwards to update
  # /boot/grub/grub.cfg.
  # For full documentation of the options in this file, see:
  #   info -f grub -n 'Simple configuration'

  #GRUB_DEFAULT=0
  #KBU: 4.4.0 doesn't find root :(((
  GRUB_DEFAULT="Advanced options for Ubuntu>Ubuntu, with Linux 4.2.0-35-generic"
  #GRUB_HIDDEN_TIMEOUT=0
  GRUB_HIDDEN_TIMEOUT_QUIET=true
  GRUB_TIMEOUT=5
  GRUB_DISTRIBUTOR=`lsb_release -i -s 2> /dev/null || echo Debian`
  #GRUB_CMDLINE_LINUX_DEFAULT="quiet splash"
  GRUB_CMDLINE_LINUX_DEFAULT=""
  GRUB_CMDLINE_LINUX="noprompt persistent"

  # Uncomment to enable BadRAM filtering, modify to suit your needs
  # This works with Linux (no patch required) and with any kernel that obtains
  # the memory map information from GRUB (GNU Mach, kernel of FreeBSD ...)
  #GRUB_BADRAM="0x01234567,0xfefefefe,0x89abcdef,0xefefefef"

  # Uncomment to disable graphical terminal (grub-pc only)
  #GRUB_TERMINAL=console

  # The resolution used on graphical terminal
  # note that you can use only modes which your graphic card supports via VBE
  # you can see them in real GRUB with the command `vbeinfo'
  #GRUB_GFXMODE=640x480

  # Uncomment if you don't want GRUB to pass "root=UUID=xxx" parameter to Linux
  #GRUB_DISABLE_LINUX_UUID=true

  # Uncomment to disable generation of recovery mode menu entries
  #GRUB_DISABLE_RECOVERY="true"

  # Uncomment to get a beep at grub start
  #GRUB_INIT_TUNE="480 440 1"



  This is the same system as
  https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1463422

  See attached image for what the screen looks like when trying to boot 4.4. My USB keyboard also stops working there so I can't actually type anything into the busybox.
  --- 
  ApportVersion: 2.20.1-0ubuntu2
  Architecture: amd64
  AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/hwC0D0', '/dev/snd/pcmC0D8p', '/dev/snd/pcmC0D7p', '/dev/snd/pcmC0D3p', '/dev/snd/controlC0', '/dev/snd/hwC1D0', '/dev/snd/by-path', '/dev/snd/pcmC1D0c', '/dev/snd/pcmC1D0p', '/dev/snd/controlC1', '/dev/snd/seq', '/dev/snd/timer'] failed with exit code 1:
  DistroRelease: Ubuntu 16.04
  HibernationDevice: RESUME=UUID=dc4226ca-3ebe-4611-95ac-c1a0ccbb7d7a
  InstallationDate: Installed on 2015-06-04 (325 days ago)
  InstallationMedia: Xubuntu 15.04 "Vivid Vervet" - Release amd64 (20150422.1)
  MachineType: LENOVO F0AM
  Package: linux (not installed)
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.2.0-35-generic.efi.signed root=UUID=91533e8a-b5ca-4447-8c4a-b5bb2d095238 ro noprompt persistent
  ProcVersionSignature: Ubuntu 4.2.0-35.40-generic 4.2.8-ckt5
  PulseList: Error: command ['pacmd', 'list'] failed with exit code 1: No PulseAudio daemon running, or not running as session daemon.
  RelatedPackageVersions:
   linux-restricted-modules-4.2.0-35-generic N/A
   linux-backports-modules-4.2.0-35-generic  N/A
   linux-firmware                            1.157
  RfKill:
   
  Tags:  xenial xenial
  Uname: Linux 4.2.0-35-generic x86_64
  UnreportableReason: The report belongs to a package that is not installed.
  UpgradeStatus: Upgraded to xenial on 2016-04-23 (1 days ago)
  UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo
  _MarkForUpload: False
  dmi.bios.date: 09/30/2014
  dmi.bios.vendor: LENOVO
  dmi.bios.version: O00KT19AUS
  dmi.board.name: INVALID
  dmi.board.vendor: LENOVO
  dmi.board.version: 31900058 STD
  dmi.chassis.type: 13
  dmi.chassis.vendor: LENOVO
  dmi.chassis.version: Chassis Version
  dmi.modalias: dmi:bvnLENOVO:bvrO00KT19AUS:bd09/30/2014:svnLENOVO:pnF0AM:pvrLenovoA740:rvnLENOVO:rnINVALID:rvr31900058STD:cvnLENOVO:ct13:cvrChassisVersion:
  dmi.product.name: F0AM
  dmi.product.version: Lenovo A740
  dmi.sys.vendor: LENOVO

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