I can reproduce it with `grub-efi 2.04-1ubuntu26.7`
$ apt-cache policy grub-efi
grub-efi:
Installed: 2.04-1ubuntu26.7
Candidate: 2.04-1ubuntu26.7
Version table:
*** 2.04-1ubuntu26.7 500
500 http://mirror.yandex.ru/ubuntu focal-updates/main amd64 Packages
100 /var/lib/dpkg/status
2.04-1ubuntu26.2 500
500 http://mirror.yandex.ru/ubuntu focal-security/main amd64 Packages
500 http://security.ubuntu.com/ubuntu focal-security/main amd64 Packages
2.04-1ubuntu26 500
500 http://mirror.yandex.ru/ubuntu focal/main amd64 Packages
$ lsb_release -a
LSB Version:
core-11.1.0ubuntu2-noarch:printing-11.1.0ubuntu2-noarch:security-11.1.0ubuntu2-noarch
Distributor ID: Ubuntu
Description: Ubuntu 20.04.1 LTS
Release: 20.04
Codename: focal
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https://bugs.launchpad.net/bugs/673438
Title:
update-grub: cannot restore the original directory
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