[Bug 1848797] Re: After upgrading to 19.10, boot screen shows: "Error: symbol 'grub_file_filters' not found."

[Alex N.]

Yes, i am sure. I don't think i have done anything to the bootloader,
how can i check it? I found the following, if this helps:

$ sudo grep -r grub_file_filters /boot/
Binary file /boot/grub/i386-pc/offsetio.mod matches
Binary file /boot/grub/i386-pc/gzio.mod matches
Binary file /boot/grub/i386-pc/verifiers.mod matches
Binary file /boot/grub/i386-pc/lzopio.mod matches
Binary file /boot/grub/i386-pc/xzio.mod matches

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Title:
  After upgrading to 19.10, boot screen shows: "Error: symbol
  'grub_file_filters' not found."

Status in grub2 package in Ubuntu:
  Incomplete

Bug description:
  After upgrading to 19.10 the boot screen shows the following error:

  Error: symbol 'grub_file_filters' not found.
  Entering rescue mode...

  
  I could fix it after i booted Ubuntu 19.10 live and used the chroot repair method as described here  https://wiki.ubuntuusers.de/GRUB_2/Reparatur/#chroot-Methode (german)

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