These days my ubuntu is done again and this time i even cannot fix via external USB by boot repair tool. Even the first command:

ubuntu@ubuntu:~$ sudo chroot "/mnt/boot-sav/mapper/isw_cdfdjdhbjc_TF0501WJGPL46R5" dpkg --configure -a Setting up fontconfig (2.11.1-0ubuntu6) ... Regenerating fonts cache... failed. See /var/log/fontconfig.log for more information. dpkg: error processing package fontconfig (--configure): subprocess installed post-installation script returned error exit status 1 Errors were encountered while processing: fontconfig

This is the summary via boot repair. http://paste.ubuntu.com/12689827/

Now the situation is that i will directly enter the grub command mode, i also try

set prefix=(hd0,gpt5)/boot/grub
set root=(hd0,gpt5)
insmod linux
linux (hd0,gpt5)/vmlinuz root=/dev/sdbx ro #i cannot find any related sub-dir in dev directory actually

I can still enter my win8.1 by typing exit to exit the grub but i cannot enter my ubuntu. Do anyone have similar situation or any solution? Thanks a lot!


Basically, you've done what I did to my external Ubuntu installation when messing with dpkg. It looks like you may have deleted the kernel, to which the only fast fix is to backup your /home directory and reinstall ubuntu. This is what I've done to fix it, as boot-repair does not have a copy of the proper linux-kernel on it.

I hope this helps!

  • I also tried command like this: linux (hd0,gpt5)/boot/vmlinuz-2.6.xx-xx-generic. I think it is the kernels that i have, but i have several, and i tried two, they cannot work either. So i am not sure whether i have deleted the kernel. – Alex Oct 5 '15 at 21:40
  • After a few trials, i think the kernel was broken or something. There are ways to re-install the image only, i tried. But it does not fit in my case. In the end i re-install the whole system. – Alex Oct 8 '15 at 9:36

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