[Bug 1930573] Re: usrmerge error after upgradingfrom 20.10 to 21.04

[abdullahc]

`hwdb.bin` is a generated file. I did check it in Ubuntu 20.04,
`/lib/udev/hwdb.bin` and `/usr/lib/udev/hwdb.bin` are identical copy, so
no need to be merged.

A quick fix would be deleting one of them:

```sudo rm /lib/udev/hwdb.bin```

Then fix apt using: `sudo apt install -f`

usrmerge should probably make same action.

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https://bugs.launchpad.net/bugs/1930573

Title:
  usrmerge error after upgradingfrom 20.10 to 21.04

Status in usrmerge package in Ubuntu:
  Confirmed

Bug description:
  I got the following error after upgrading from 20.10 to 21.04:

  
  Setting up usrmerge (24ubuntu3) ...

  FATAL ERROR:
  Both /lib/udev/hwdb.bin and /usr/lib/udev/hwdb.bin exist.

  You can try correcting the errors reported and running again
  /usr/lib/usrmerge/convert-usrmerge until it will complete without errors.
  Do not install or update other Debian packages until the program
  has been run successfully.

  dpkg: error processing package usrmerge (--configure):
   installed usrmerge package post-installation script subprocess returned error exit status 1
  Errors were encountered while processing:
   usrmerge

  
  Running "sudo dpkg --configure -a", "sudo apt -f install" or "sudo /usr/lib/usrmerge/convert-usrmerge" give exactly the same error.

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