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I upgraded to Ubuntu 22.04LTS from 20.04LTS.

Now it appears that the "mdadm" package is giving me hassles. Whenever I want to look for upgrades in terminal I get this error message:

Setting up mdadm (4.2-0ubuntu1) ...
dpkg: error processing package mdadm (--configure):
 installed mdadm package post-installation script subprocess returned error exit status 20
Errors were encountered while processing:
 mdadm
E: Sub-process /usr/bin/dpkg returned an error code (1)

How can I solve this problem??

Error404
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JohnPta
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  • This is a generic error message, a summary of what went wrong. Please do sudo dpkg --configure -a (which tells the package manager to configure all unconfigured packages) and look for more specific error messages. The issue may also already be solved by this command. – Jos Aug 21 '22 at 09:29
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    Does this answer your question? What is a post-installation script for a package?. This is the best response that can be given based on the scant information you have provided. – Error404 Aug 21 '22 at 09:41

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