apport information
** Attachment added: "WifiSyslog.txt"
https://bugs.launchpad.net/bugs/1653636/+attachment/4799339/+files/WifiSyslog.txt
** Changed in: linux (Ubuntu)
Status: Incomplete => Confirmed
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https://bugs.launchpad.net/bugs/1653636
Title:
Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-
block(0,0)
Status in linux package in Ubuntu:
Confirmed
Bug description:
On powering my PC up after the holiday break I got a welcome back in
the form of a kernel panic. I had completed some upgrades before the
holiday and was seeing a restart to use the newly upgraded packages
message.
When the PC powered on the Caps Lock and Scroll Lock lights on my
keyboard were blinking. After passing through grub and attempting to
boot the kernel the boot message ended with the following message
(typed out by me by hand, please see the attached photograph of the
screen for more details):
Kernel Offset: disabled
---[ end Kernel panic - not syncing: VFS: Unable to mount root fs on
unknown-block(0,0)
------------[ cut here ]------------
WARNING: CPU: 0 PID: 1 at arch/x86/kernel/smp.c:125
native_smp_send_reschedule+0x60/0x70(
Modules linked in:
CPU: 0 PID 1: Comm: swapper/0 Not tainted 4.4.21 #1
Hardware name: Gigabyte Technology Cp., Ltd. H81M-DS2V/H81M-DS2V, BIOS F6
08/11/2015
...
Call Trace:
... dump_stack
... warn_slowpath_common
... warn_slowpath_null
... native_smp_send_rescheduale
... trigger_load_balance
... scheduler_tick
... ? tick_sched_handle.isra
... update_process_times
... tick_sched_handle.isra
I can type out more of the message if people want but I think the
chances of my typing it all in correctly are slim.
I tried to boot using the (recovery mode) version of 4.4.21 and the .old
version of 4.4.21 that seemed to have appeared from somewhere. To my eye the
problem looked the same in each version. Once I selected 4.4.0-57-generic I
was able to complete the boot and begin reporting this bug.
If there are any more steps I can take to aid diagnosis please let me know.
---
ApportVersion: 2.20.1-0ubuntu2.4
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC2: thomasthorne 4613 F.... pulseaudio
/dev/snd/pcmC1D0p: thomasthorne 4613 F...m pulseaudio
/dev/snd/controlC1: thomasthorne 4613 F.... pulseaudio
/dev/snd/controlC0: thomasthorne 4613 F.... pulseaudio
CurrentDesktop: Unity
DistroRelease: Ubuntu 16.04
HibernationDevice: RESUME=UUID=3c3104a1-5ead-4ebf-b2df-f9397f572dca
InstallationDate: Installed on 2015-03-12 (662 days ago)
InstallationMedia: Ubuntu 14.04.2 LTS "Trusty Tahr" - Release amd64
(20150218.1)
IwConfig:
lo no wireless extensions.
eth1 no wireless extensions.
eth0 no wireless extensions.
MachineType: Gigabyte Technology Co., Ltd. H81M-DS2V
Package: linux (not installed)
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.4.0-57-generic.efi.signed
root=/dev/mapper/ubuntu--vg-root ro quiet splash crashkernel=384M-:128M
ProcVersionSignature: Ubuntu 4.4.0-57.78-generic 4.4.35
RelatedPackageVersions:
linux-restricted-modules-4.4.0-57-generic N/A
linux-backports-modules-4.4.0-57-generic N/A
linux-firmware 1.157.6
RfKill:
Tags: xenial
Uname: Linux 4.4.0-57-generic x86_64
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dialout dip lpadmin mock plugdev sambashare sudo
wireshark
_MarkForUpload: True
dmi.bios.date: 08/11/2015
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: F6
dmi.board.asset.tag: To be filled by O.E.M.
dmi.board.name: H81M-DS2V
dmi.board.vendor: Gigabyte Technology Co., Ltd.
dmi.board.version: x.x
dmi.chassis.asset.tag: To Be Filled By O.E.M.
dmi.chassis.type: 3
dmi.chassis.vendor: Gigabyte Technology Co., Ltd.
dmi.chassis.version: To Be Filled By O.E.M.
dmi.modalias:
dmi:bvnAmericanMegatrendsInc.:bvrF6:bd08/11/2015:svnGigabyteTechnologyCo.,Ltd.:pnH81M-DS2V:pvrTobefilledbyO.E.M.:rvnGigabyteTechnologyCo.,Ltd.:rnH81M-DS2V:rvrx.x:cvnGigabyteTechnologyCo.,Ltd.:ct3:cvrToBeFilledByO.E.M.:
dmi.product.name: H81M-DS2V
dmi.product.version: To be filled by O.E.M.
dmi.sys.vendor: Gigabyte Technology Co., Ltd.
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