solution worked for me as well
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Title:
package shim-signed 1.57+15.8-0ubuntu1 failed to install/upgrade:
subproces van pakket shim-signed werd
Ok thanks after upgrade grub-common grub2-common...
corrado@corrado-n4-nn-0215:~$ sudo apt install --only-upgrade shim-signed
Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
shim-signed is already the newest version (1.57+15.8-0ubuntu1).
0
Can you try just upgrading grub-common and grub2-common first and then
upgrading shim-signed?
E.g. by:
apt update
apt install --only-upgrade grub-common grub2-common
apt install --only-upgrade shim-signed
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The following packages have been kept back:
grub-common grub2-common
corrado@corrado-n4-nn-0215:~$ apt policy grub*-common
grub2-common:
Installed: 2.12-1ubuntu3
Candidate: 2.12-1ubuntu4
Version table:
2.12-1ubuntu5 100
100 http://archive.ubuntu.com/ubuntu
Status changed to 'Confirmed' because the bug affects multiple users.
** Changed in: shim-signed (Ubuntu)
Status: New => Confirmed
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Title:
@ #2 Mate:
ii grub-common2.12-1ubuntu4 amd64GRand Unified Bootloader (common
files)
ii grub2-common 2.12-1ubuntu4 amd64GRand Unified Bootloader (common
files for version 2)
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Hi,
Can you check what version of the grub-common and grub2-common packages
does your system have installed? (dpkg -l)
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Title:
package