package:linux-image-4.15.0-33-generic:4.15.0-33.36~16.04.1 Processing triggers for linux-image-4.15.0-32-generic (4.15.0-32.35~16.04.1) ... /etc/kernel/postinst.d/initramfs-tools: update-initramfs: Generating /boot/initrd.img-4.15.0-32-generic W: Possible missing firmware /lib/firmware/i915/kbl_guc_ver9_14.bin for module i915 W: Possible missing firmware /lib/firmware/i915/bxt_guc_ver8_7.bin for module i915 /etc/kernel/postinst.d/zz-update-grub: Searching for GRUB installation directory ... found: /boot/grub Searching for default file ... found: /boot/grub/default 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: line 1094: read: read error: 0: Bad file descriptor run-parts: /etc/kernel/postinst.d/zz-update-grub exited with return code 1 dpkg: error processing package linux-image-4.15.0-32-generic (--configure): subprocess installed post-installation script returned error exit status 1