Comment 0 for bug 1603620

Newest kernel available currently is 4.4.0-31-generic, but

$ tail /var/log/unattended-upgrades/unattended-upgrades.log
2016-07-13 18:25:40,954 INFO Initial blacklisted packages:
2016-07-13 18:25:40,956 INFO Initial whitelisted packages:
2016-07-13 18:25:40,957 INFO Starting unattended upgrades script
2016-07-13 18:25:40,957 INFO Allowed origins are: ['o=Ubuntu,a=xenial-security', 'o=Google\\, Inc.,a=stable']
2016-07-13 18:25:47,769 INFO No packages found that can be upgraded unattended and no pending auto-removals
2016-07-16 09:34:12,442 INFO Initial blacklisted packages:
2016-07-16 09:34:12,451 INFO Initial whitelisted packages:
2016-07-16 09:34:12,452 INFO Starting unattended upgrades script
2016-07-16 09:34:12,452 INFO Allowed origins are: ['o=Ubuntu,a=xenial-security', 'o=Google\\, Inc.,a=stable']
2016-07-16 09:34:19,301 INFO No packages found that can be upgraded unattended and no pending auto-removals

$ linux-version list
4.2.0-38-generic
4.4.0-24-generic
4.4.0-28-generic

`apt-get dist-upgrade` does not upgrade kernel either, unless I run `apt-get update` first.

I wonder why kernel was not upgraded 2016-07-16 morning.

ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: unattended-upgrades 0.90
ProcVersionSignature: Ubuntu 4.4.0-28.47-generic 4.4.13
Uname: Linux 4.4.0-28-generic x86_64
NonfreeKernelModules: nvidia_uvm nvidia
ApportVersion: 2.20.1-0ubuntu2.1
Architecture: amd64
CurrentDesktop: XFCE
Date: Sat Jul 16 11:40:07 2016
EcryptfsInUse: Yes
InstallationDate: Installed on 2015-11-21 (237 days ago)
InstallationMedia: Xubuntu 15.10 "Wily Werewolf" - Release amd64 (20151021)
PackageArchitecture: all
SourcePackage: unattended-upgrades
UpgradeStatus: Upgraded to xenial on 2016-06-24 (21 days ago)
modified.conffile..etc.apt.apt.conf.d.10periodic:
 APT::Periodic::Update-Package-Lists "1";
 APT::Periodic::Download-Upgradeable-Packages "0";
 APT::Periodic::AutocleanInterval "0";
 APT::Periodic::Unattended-Upgrade "0";
mtime.conffile..etc.apt.apt.conf.d.10periodic: 2016-02-15T22:39:19.560937
mtime.conffile..etc.apt.apt.conf.d.50unattended-upgrades: 2016-06-24T18:13:45.181749