Ok, i can reproduce the issue, and while debugging it i found something else: 1) flash-kernel is broken ... ubuntu@ubuntu:~$ sudo dpkg -i linux-image-4.15.0-1029-raspi2_4.15.0-1029.31~1806108take2_arm64.deb dpkg: warning: downgrading linux-image-4.15.0-1029-raspi2 from 4.15.0-1029.31 to 4.15.0-1029.31~1806108take2 (Reading database ... 61762 files and directories currently installed.) Preparing to unpack linux-image-4.15.0-1029-raspi2_4.15.0-1029.31~1806108take2_arm64.deb ... Unpacking linux-image-4.15.0-1029-raspi2 (4.15.0-1029.31~1806108take2) over (4.15.0-1029.31) ... Setting up linux-image-4.15.0-1029-raspi2 (4.15.0-1029.31~1806108take2) ... Processing triggers for linux-image-4.15.0-1029-raspi2 (4.15.0-1029.31~1806108take2) ... /etc/kernel/postinst.d/initramfs-tools: update-initramfs: Generating /boot/initrd.img-4.15.0-1029-raspi2 flash-kernel: deferring update (trigger activated) raspi3-firmware: deferring update via initramfs-tools (hook will be called later by the kernel package) /etc/kernel/postinst.d/x-grub-legacy-ec2: Searching for GRUB installation directory ... found: /boot/grub Searching for default file ... Generating /boot/grub/default file and setting the default boot entry to 0 Searching for GRUB installation directory ... found: /boot/grub Testing for an existing GRUB menu.lst file ... Could not find /boot/grub/menu.lst file. Would you like /boot/grub/menu.lst generated for you? (y/N) /usr/sbin/update-grub-legacy-ec2: line 1101: read: read error: 0: Bad file descriptor run-parts: /etc/kernel/postinst.d/x-grub-legacy-ec2 exited with return code 1 dpkg: error processing package linux-image-4.15.0-1029-raspi2 (--install): installed linux-image-4.15.0-1029-raspi2 package post-installation script subprocess returned error exit status 1 Processing triggers for flash-kernel (3.90ubuntu3) ... Unsupported platform. dpkg: error processing package flash-kernel (--install): installed flash-kernel package post-installation script subprocess returned error exit status 1 Errors were encountered while processing: linux-image-4.15.0-1029-raspi2 flash-kernel ... 2) i saw a couple of systemd services fail: ubuntu@ubuntu:~$ systemctl status systemd-modules-load.service ● systemd-modules-load.service - Load Kernel Modules Loaded: loaded (/lib/systemd/system/systemd-modules-load.service; static; vendor preset: enabled) Active: failed (Result: exit-code) since Sun 2018-01-28 15:58:19 UTC; 10 months 5 days ago Docs: man:systemd-modules-load.service(8) man:modules-load.d(5) Process: 676 ExecStart=/lib/systemd/systemd-modules-load (code=exited, status=1/FAILURE) Main PID: 676 (code=exited, status=1/FAILURE) Jan 28 15:58:19 ubuntu systemd-modules-load[676]: Inserted module 'iscsi_tcp' Jan 28 15:58:19 ubuntu systemd-modules-load[676]: Failed to find module 'ib_iser' Jan 28 15:58:19 ubuntu systemd[1]: systemd-modules-load.service: Main process exited, code=exited, status=1/FAILURE Jan 28 15:58:19 ubuntu systemd[1]: systemd-modules-load.service: Failed with result 'exit-code'. Jan 28 15:58:19 ubuntu systemd[1]: Failed to start Load Kernel Modules. this one seems just noise, while i don't know about this one: ubuntu@ubuntu:~$ systemctl status systemd-tmpfiles-setup.service ● systemd-tmpfiles-setup.service - Create Volatile Files and Directories Loaded: loaded (/lib/systemd/system/systemd-tmpfiles-setup.service; static; vendor preset: enabled) Active: failed (Result: exit-code) since Sun 2018-01-28 15:58:24 UTC; 10 months 5 days ago Docs: man:tmpfiles.d(5) man:systemd-tmpfiles(8) Process: 1066 ExecStart=/bin/systemd-tmpfiles --create --remove --boot --exclude-prefix=/dev (code=exited, status=1/FAILURE) Main PID: 1066 (code=exited, status=1/FAILURE) Jan 28 15:58:24 ubuntu systemd[1]: Starting Create Volatile Files and Directories... Jan 28 15:58:24 ubuntu systemd-tmpfiles[1066]: ACL operation on "/var/log/journal" failed: Invalid argument Jan 28 15:58:24 ubuntu systemd-tmpfiles[1066]: ACL operation on "/var/log/journal" failed: Invalid argument Jan 28 15:58:24 ubuntu systemd[1]: systemd-tmpfiles-setup.service: Main process exited, code=exited, status=1/FAILURE Jan 28 15:58:24 ubuntu systemd[1]: systemd-tmpfiles-setup.service: Failed with result 'exit-code'. Jan 28 15:58:24 ubuntu systemd[1]: Failed to start Create Volatile Files and Directories.