Ubuntu: Lots of kernel errors whenever I use apt



Question:

I'm running Ubuntu 16.04 on a MacBook Pro. Seeing lots of strange errors whenever I try to do anything related to package management. They seem to be related to the kernel.

root@danielhep-Ubuntu:/home/danielhep# sudo apt-get upgrade  Reading package lists... Done  Building dependency tree         Reading state information... Done  Calculating upgrade... Done  The following packages will be REMOVED:    linux-image-4.8.0-36-generic linux-image-extra-4.8.0-36-generic  0 upgraded, 0 newly installed, 2 to remove and 0 not upgraded.  9 not fully installed or removed.  After this operation, 234 MB disk space will be freed.  Do you want to continue? [Y/n] y  (Reading database ... 217741 files and directories currently installed.)  Removing linux-image-extra-4.8.0-36-generic (4.8.0-36.36~16.04.1) ...  depmod: FATAL: could not load /boot/System.map-4.8.0-36-generic: No such file or directory  run-parts: executing /etc/kernel/postinst.d/apt-auto-removal 4.8.0-36-generic /boot/vmlinuz-4.8.0-36-generic  run-parts: executing /etc/kernel/postinst.d/dkms 4.8.0-36-generic /boot/vmlinuz-4.8.0-36-generic  Error! Your kernel headers for kernel 4.8.0-36-generic cannot be found.  Please install the linux-headers-4.8.0-36-generic package,  or use the --kernelsourcedir option to tell DKMS where it's located  run-parts: executing /etc/kernel/postinst.d/initramfs-tools 4.8.0-36-generic /boot/vmlinuz-4.8.0-36-generic  update-initramfs: Generating /boot/initrd.img-4.8.0-36-generic  WARNING: missing /lib/modules/4.8.0-36-generic  Ensure all necessary drivers are built into the linux image!  depmod: ERROR: could not open directory /lib/modules/4.8.0-36-generic: No such file or directory  depmod: FATAL: could not search modules: No such file or directory  depmod: WARNING: could not open /var/tmp/mkinitramfs_sZRs08/lib/modules/4.8.0-36-generic/modules.order: No such file or directory  depmod: WARNING: could not open /var/tmp/mkinitramfs_sZRs08/lib/modules/4.8.0-36-generic/modules.builtin: No such file or directory  run-parts: executing /etc/kernel/postinst.d/pm-utils 4.8.0-36-generic /boot/vmlinuz-4.8.0-36-generic  run-parts: executing /etc/kernel/postinst.d/unattended-upgrades 4.8.0-36-generic /boot/vmlinuz-4.8.0-36-generic  run-parts: executing /etc/kernel/postinst.d/update-notifier 4.8.0-36-generic /boot/vmlinuz-4.8.0-36-generic  run-parts: executing /etc/kernel/postinst.d/zz-update-grub 4.8.0-36-generic /boot/vmlinuz-4.8.0-36-generic  Generating grub configuration file ...  /usr/sbin/grub-probe: error: failed to get canonical path of `/boot/grub2/DejaVuSansMono.pf2'.  No path or device is specified.  Usage: grub-probe [OPTION...] [OPTION]... [PATH|DEVICE]  Try 'grub-probe --help' or 'grub-probe --usage' for more information.  run-parts: /etc/kernel/postinst.d/zz-update-grub exited with return code 64  dpkg: error processing package linux-image-extra-4.8.0-36-generic (--remove):   subprocess installed post-removal script returned error exit status 1  Removing linux-image-4.8.0-36-generic (4.8.0-36.36~16.04.1) ...  Examining /etc/kernel/postrm.d .  run-parts: executing /etc/kernel/postrm.d/initramfs-tools 4.8.0-36-generic /boot/vmlinuz-4.8.0-36-generic  update-initramfs: Deleting /boot/initrd.img-4.8.0-36-generic  run-parts: executing /etc/kernel/postrm.d/zz-update-grub 4.8.0-36-generic /boot/vmlinuz-4.8.0-36-generic  Generating grub configuration file ...  /usr/sbin/grub-probe: error: failed to get canonical path of `/boot/grub2/DejaVuSansMono.pf2'.  No path or device is specified.  Usage: grub-probe [OPTION...] [OPTION]... [PATH|DEVICE]  Try 'grub-probe --help' or 'grub-probe --usage' for more information.  run-parts: /etc/kernel/postrm.d/zz-update-grub exited with return code 64  Failed to process /etc/kernel/postrm.d at /var/lib/dpkg/info/linux-image-4.8.0-36-generic.postrm line 328.  dpkg: error processing package linux-image-4.8.0-36-generic (--remove):   subprocess installed post-removal script returned error exit status 1  Errors were encountered while processing:   linux-image-extra-4.8.0-36-generic   linux-image-4.8.0-36-generic  E: Sub-process /usr/bin/dpkg returned an error code (1)  

I get issues like this even when I'm installing completely unrelated packages.

And df -i and -h:

root@danielhep-Ubuntu:/home/danielhep# df -i  Filesystem       Inodes  IUsed    IFree IUse% Mounted on  udev            2032866    638  2032228    1% /dev  tmpfs           2038163    887  2037276    1% /run  /dev/sda5       2088960 246539  1842421   12% /  tmpfs           2038163    352  2037811    1% /dev/shm  tmpfs           2038163      5  2038158    1% /run/lock  tmpfs           2038163     16  2038147    1% /sys/fs/cgroup  /dev/sda1             0      0        0     - /boot/efi  tmpfs           2038163     31  2038132    1% /run/user/1000  /dev/sda4      21953384 128805 21824579    1% /media/danielhep/BOOTCAMP  root@danielhep-Ubuntu:/home/danielhep# df -h  Filesystem      Size  Used Avail Use% Mounted on  udev            7.8G     0  7.8G   0% /dev  tmpfs           1.6G  9.6M  1.6G   1% /run  /dev/sda5        32G   11G   20G  35% /  tmpfs           7.8G  471M  7.4G   6% /dev/shm  tmpfs           5.0M  4.0K  5.0M   1% /run/lock  tmpfs           7.8G     0  7.8G   0% /sys/fs/cgroup  /dev/sda1       197M   40M  157M  21% /boot/efi  tmpfs           1.6G   64K  1.6G   1% /run/user/1000  /dev/sda4        49G   28G   21G  57% /media/danielhep/BOOTCAMP  


Solution:1

I solved the problem by following the instructions available here: https://askubuntu.com/a/652077/682591

With the following packages:

 linux-image-4.8.0-49-generic   linux-image-extra-4.8.0-49-generic   linux-image-generic-hwe-16.04   linux-generic-hwe-16.04   linux-signed-image-4.8.0-49-generic   linux-signed-image-generic-hwe-16.04   linux-signed-generic-hwe-16.04  

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