small /boot (as created for full-disk encryption) confuses update-manager

[Nick Moffitt]

Every time a kernel update comes in, the update-manager scolds me for not having enough disk free on /boot. I try to autoremove everything I can, but in the end `sudo apt-get dist-upgrade` does the upgrade with no problems.

Separately from why the installer gave me such a teensy /boot (doesn't seem future-proof given the trends for kernel sizes), why can't update-manager work out the upgrade?

Not to be confused with bug 1389620, where autoremove would leave enough space but Software Updater doesn't suggest it.

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: update-manager 1:0.196.12
ProcVersionSignature: Ubuntu 3.13.0-32.57-generic 3.13.11.4
Uname: Linux 3.13.0-32-generic x86_64
ApportVersion: 2.14.1-0ubuntu3.3
Aptdaemon:

Architecture: amd64
CurrentDesktop: Unity
Date: Mon Aug 11 07:46:24 2014
GsettingsChanges:
 b'com.ubuntu.update-manager' b'show-details' b'true'
 b'com.ubuntu.update-manager' b'window-height' b'356'
 b'com.ubuntu.update-manager' b'first-run' b'false'
 b'com.ubuntu.update-manager' b'window-width' b'444'
 b'com.ubuntu.update-manager' b'launch-time' b'1407653443'
InstallationDate: Installed on 2014-05-29 (73 days ago)
InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417)
PackageArchitecture: all
SourcePackage: update-manager
UpgradeStatus: No upgrade log present (probably fresh install)

[Nick Moffitt (nick-moffitt)]

Also, where would I file the bug against the installer part that made my /boot so teensy?

/dev/sda2 237M 141M 84M 63% /boot
/dev/sda1 511M 3.4M 508M 1% /boot/efi

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Phill (phill.l)]

I think this bug should be considered of high importance as it is a security risk because security updates can not be installed.

It happened to me on a clean install with default full-disk-encryption partitioning within about 2 months of use with a 1TB disk; so I'm guessing the 3 people showing as affected by this bug is the tip of the iceberg - or maybe most people using full-disk-encryption avoid using the standard software updater.

Running `apt-get autoremove --purge` doesn't appear to free up enough disk space for software-updater to work either. Thanks for the tip using `apt-get dist-upgrade`, that worked OK for me too.

[spike speigel (frail-knight)]

Not sure if using dkms, but if so may be related to bug 1515513

[Randall Whitman (ubuntu-whizman)]

Cross-reference, among others:
https://bugs.launchpad.net/ubuntu/+source/ubuntu-release-upgrader/+bug/1988299
https://bugs.launchpad.net/ubuntu/+source/update-manager/+bug/1360556
https://bugs.launchpad.net/ubuntu/+source/initramfs-tools/+bug/1895416