Package: plymouth Version: 0.9.4-1.1 Severity: important I think the same issue is tracked in Ubuntu Launchpad as https://bugs.launchpad.net/ubuntu/+source/plymouth/+bug/1592405.
Unpacking linux-image-amd64 (5.9.15-1~bpo10+1) over (5.9.6-1~bpo10+1) ... Setting up linux-image-5.9.0-0.bpo.5-amd64 (5.9.15-1~bpo10+1) ... I: /vmlinuz is now a symlink to boot/vmlinuz-5.9.0-0.bpo.5-amd64 I: /initrd.img is now a symlink to boot/initrd.img-5.9.0-0.bpo.5-amd64 /etc/kernel/postinst.d/initramfs-tools: update-initramfs: Generating /boot/initrd.img-5.9.0-0.bpo.5-amd64 cp: cannot stat '/usr/share/fonts/truetype/ttf-dejavu/DejaVuSerif.ttf': No such file or directory E: /usr/share/initramfs-tools/hooks/plymouth failed with return 1. update-initramfs: failed for /boot/initrd.img-5.9.0-0.bpo.5-amd64 with 1. run-parts: /etc/kernel/postinst.d/initramfs-tools exited with return code 1 dpkg: error processing package linux-image-5.9.0-0.bpo.5-amd64 (--configure): installed linux-image-5.9.0-0.bpo.5-amd64 package post-installation script subprocess returned error exit status 1 dpkg: dependency problems prevent configuration of linux-image-amd64: linux-image-amd64 depends on linux-image-5.9.0-0.bpo.5-amd64 (= 5.9.15-1~bpo10+1); however: Package linux-image-5.9.0-0.bpo.5-amd64 is not configured yet. dpkg: error processing package linux-image-amd64 (--configure): dependency problems - leaving unconfigured Errors were encountered while processing: linux-image-5.9.0-0.bpo.5-amd64 linux-image-amd64 -- System Information: Debian Release: 10.7 APT prefers stable-updates APT policy: (500, 'stable-updates'), (500, 'stable') Architecture: amd64 (x86_64) Kernel: Linux 5.9.0-0.bpo.2-amd64 (SMP w/2 CPU cores) Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8), LANGUAGE=en_US:en (charmap=UTF-8) Shell: /bin/sh linked to /usr/bin/dash Init: systemd (via /run/systemd/system) LSM: AppArmor: enabled Versions of packages plymouth depends on: ii init-system-helpers 1.56+nmu1 ih initramfs-tools 0.133+deb10u1 ii libc6 2.28-10 ii libdrm2 2.4.97-1 pn libplymouth4 <none> ii lsb-base 10.2019051400 ii systemd 241-7~deb10u5 ii udev 241-7~deb10u5 plymouth recommends no packages. Versions of packages plymouth suggests: ii desktop-base 10.0.2 pn plymouth-themes <none> -- no debconf information