Ubuntu won't launch after the Ubuntu, with Linux 4.4.0-39 generic update
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
linux (Ubuntu) |
Confirmed
|
High
|
Unassigned | ||
Xenial |
Confirmed
|
High
|
Unassigned |
Bug Description
I am running Linux Ubuntu 16.04 LTS, and I've discussed in a thread at 'Ask Ubuntu: System update almost broke the system' about the Kernel Bug — as suggested by a local user boddhi.zazen — that I experienced as I was running my system updates. The problem occurs with "Ubuntu, with Linux 4.4.0-39 generic", although I am still able to access Ubuntu with the older "Ubuntu, with Linux 4.4.0-38 generic" via "+Advanced options for Ubuntu".
Here's what happened:
1. I first ran the upgrade procedures through terminal as usual: sudo apt-get update, sudo apt-get upgrade, sudo apt-get autoremove, and sudo apt-get autoremove
2. However, I was told that "4 not upgraded", so I decided to run Software Updater as well, and there was indeed updates available concerning "Ubuntu base". I installed those successfully, and decided to proceed with restart my system.
After the restart, my system doesn't start though. Instead, I receive the following error message:
<-- THE BEGINNING, NOT PART OF THE ERROR MESSAGE -->
[ 1.452270] genirq: Flags mismatch irq 0. 00000080 (nvme0q0) vs. 00015a00 (timer)
[ 1.452551] iounmap: bad address ffffc90001b88000
Scanning for Btrfs filesystems
Gave up waiting for root device. Common problems:
- Boot args (cat /proc/cmdline)
- Check rootdelay= (did the system wait for the right device?)
- Check root= (did the system wait for the right device?)
- Missing modules (cat /proc/modules; ls /dev)
ALERT! UUID=a5ccaf22-
BusyBox v1.222.1 (Ubuntu 1:1.22.0-15ubuntu1) built-in shell (ash)
Enter 'help' for a list of built-in commands.
(initramfs)
<-- THE END, NOT PART OF THE ERROR MESSAGE -->
I was able to recover my system through the "+Advanced options for Ubuntu", which I opened after. There I had total of nine choices, three options for each version. I first tried the "recovery version" of the latest one, but it didn't work. After that, I tried the "generic version" of the second latest, and — thank God — that one managed to recover my system! I believe the package is called linux-image-
ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: ubuntu-
ProcVersionSign
Uname: Linux 4.4.0-38-generic x86_64
ApportVersion: 2.20.1-0ubuntu2.1
Architecture: amd64
CrashDB: ubuntu
Date: Mon Oct 3 16:19:33 2016
PackageArchitec
SourcePackage: ubuntu-
Symptom: release-upgrade
UpgradeStatus: No upgrade log present (probably fresh install)
VarLogDistupgra
affects: | ubuntu-release-upgrader (Ubuntu) → linux (Ubuntu) |
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