package:linux-firmware:1.157.8 Setting up linux-firmware (1.157.8) ... update-initramfs: Generating /boot/initrd.img-3.13.0-108-generic E: /usr/share/initramfs-tools/hooks/casper-memdisk failed with return 1. update-initramfs: failed for /boot/initrd.img-3.13.0-108-generic with 1. dpkg: error processing package linux-firmware (--configure): subprocess installed post-installation script returned error exit status 1