Public bug reported: Looking at /var/log/dist-upgrade/apt-term.log it actually appears that the Wily kernel was purged because I was using a proprietary graphics driver:
Generating grub configuration file ... Found linux image: /boot/vmlinuz-4.2.0-16-generic Found initrd image: /boot/initrd.img-4.2.0-16-generic Found linux image: /boot/vmlinuz-3.19.0-30-generic Found initrd image: /boot/initrd.img-3.19.0-30-generic Found linux image: /boot/vmlinuz-3.19.0-14-generic Found initrd image: /boot/initrd.img-3.19.0-14-generic Found memtest86+ image: /boot/memtest86+.elf Found memtest86+ image: /boot/memtest86+.bin Found Ubuntu 14.04.3 LTS (14.04) on /dev/sda1 Found Ubuntu Wily Werewolf (development branch) (15.10) on /dev/sda7 Found Ubuntu 15.10 (15.10) on /dev/sda8 Found Debian GNU/Linux (8.2) on /dev/sdb1 Found Ubuntu Wily Werewolf (development branch) (15.10) on /dev/sdc1 done Removing linux-image-4.2.0-16-generic (4.2.0-16.19) ... Examining /etc/kernel/prerm.d. run-parts: executing /etc/kernel/prerm.d/dkms 4.2.0-16-generic /boot/vmlinuz-4.2.0-16-generic dkms: removing: nvidia-304 304.128 (4.2.0-16-generic) (x86_64) -------- Uninstall Beginning -------- Module: nvidia-304 Version: 304.128 Kernel: 4.2.0-16-generic (x86_64) ------------------------------------- Status: Before uninstall, this module version was ACTIVE on this kernel. nvidia_304.ko: - Uninstallation - Deleting from: /lib/modules/4.2.0-16-generic/updates/dkms/ - Original module - No original module was found for this module on this kernel. - Use the dkms install command to reinstall any previous module version. depmod.... DKMS: uninstall completed. Examining /etc/kernel/postrm.d . run-parts: executing /etc/kernel/postrm.d/initramfs-tools 4.2.0-16-generic /boot/vmlinuz-4.2.0-16-generic update-initramfs: Deleting /boot/initrd.img-4.2.0-16-generic run-parts: executing /etc/kernel/postrm.d/zz-update-grub 4.2.0-16-generic /boot/vmlinuz-4.2.0-16-generic Generating grub configuration file ... Found linux image: /boot/vmlinuz-3.19.0-30-generic Found initrd image: /boot/initrd.img-3.19.0-30-generic Found linux image: /boot/vmlinuz-3.19.0-14-generic Found initrd image: /boot/initrd.img-3.19.0-14-generic Found memtest86+ image: /boot/memtest86+.elf Found memtest86+ image: /boot/memtest86+.bin Found Ubuntu 14.04.3 LTS (14.04) on /dev/sda1 Found Ubuntu Wily Werewolf (development branch) (15.10) on /dev/sda7 Found Ubuntu 15.10 (15.10) on /dev/sda8 Found Debian GNU/Linux (8.2) on /dev/sdb1 Found Ubuntu Wily Werewolf (development branch) (15.10) on /dev/sdc1 done The link /vmlinuz is a damaged link Removing symbolic link vmlinuz you may need to re-run your boot loader[grub] The link /initrd.img is a damaged link Removing symbolic link initrd.img you may need to re-run your boot loader[grub] Removing qtdeclarative5-ubuntu-web-plugin-assets (0.23+15.04.20150416-0ubuntu1) ... Removing thermald (1.4.3-5) ... initctl: Unable to connect to Upstart: Failed to connect to socket /com/ubuntu/upstart: Connection refused [....] Stopping thermald (via systemctl): thermald.service[?25l7[1G[[32m ok [39;49m8[?12l[?25h. Removing xul-ext-webaccounts (0.5-0ubuntu4.15.04.1) ... Removing webaccounts-extension-common (0.5-0ubuntu4.15.04.1) ... Removing xfonts-mathml (6ubuntu1) ... Removing libedataserver-1.2-18 (3.12.11-0ubuntu1.15.04.1) ... Removing libcamel-1.2-49 (3.12.11-0ubuntu1.15.04.1) ... Removing libicu52:amd64 (52.1-8ubuntu0.2) ... Processing triggers for libc-bin (2.21-0ubuntu4) ... Processing triggers for man-db (2.7.4-1) ... Processing triggers for dbus (1.10.0-1ubuntu1) ... dbus-daemon has been upgraded from a version with incompatible configuration. ProblemType: Bug DistroRelease: Ubuntu 15.10 Package: ubuntu-release-upgrader-core 1:15.10.10 ProcVersionSignature: Ubuntu 3.19.0-30.34-generic 3.19.8-ckt6 Uname: Linux 3.19.0-30-generic x86_64 NonfreeKernelModules: nvidia ApportVersion: 2.19.1-0ubuntu3 Architecture: amd64 CrashDB: ubuntu CurrentDesktop: Unity Date: Tue Oct 20 13:19:17 2015 InstallationDate: Installed on 2015-04-18 (184 days ago) InstallationMedia: Ubuntu 15.04 "Vivid Vervet" - Beta amd64 (20150417.1) PackageArchitecture: all SourcePackage: ubuntu-release-upgrader Symptom: ubuntu-release-upgrader UpgradeStatus: Upgraded to wily on 2015-10-20 (0 days ago) VarLogDistupgradeTermlog: ** Affects: ubuntu-release-upgrader (Ubuntu) Importance: Undecided Status: New ** Tags: amd64 apport-bug dist-upgrade wily -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1508157 Title: Kernel not upgraded during Vivid -> Wily upgrade To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/ubuntu-release-upgrader/+bug/1508157/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs