[Bug 1872703] Re: Graphical installer fails with encrypted volume

[arno]

Any news here? Is is worth to try a newer Ubuntu 21.04 maybe?

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Title:
  Graphical installer fails with encrypted volume

Status in ubiquity package in Ubuntu:
  Confirmed

Bug description:
  Testet with Ubuntu (Mate) 19.10 and 20.04 beta - but I guess the
  graphical installer is same for all flavours.

  I have a single harddrive with a windows installation (sda1..4) and
  want to install an encrypted linux beside Windows.

  First I booted into installer from USB stick.
  In manual partitioning I created
  sda5 ext4 /boot
  sda6 encrpyted volume, give password "aaa"
  sda7 encrpyted volume, give password "aaa"
  sda6_crypt: ext4 /
  sda7_crypt: ext4 /opt

  In the next step I will ask for username, devicename and password.
  While that I get an error:

  mount of ext4 to an encrypted volume as / fails

  I would expect I can setup an encrypted Linux out of the graphical
  installer, so no need to use console commands...

  Edit:

  I found that it works with just one encrypted volume. But adding the
  second volume /opt seems to wipe out the /. At least this is what I
  see in the partion scheme if I go back when this error message occurs.

  So this bug seems to be happen if more than one encrypted volume is
  used.

  Question:

  If it would be possible to allow 2 encrypted partitions and both have
  same key: Howto make it comfortable and type in just one key for both?

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