[Bug 468208] [NEW] cryptsetup passphrase prompt at boot not working if waiting too long

[jott]

Public bug reported:

Binary package hint: cryptsetup

I have a LUKS-encrypted /home device (which in turn is a LVM partition).
This setup worked very well until updating to 9.10.

When booting, I am prompted for the passphrase (I always boot with the
"nosplash" option). This passphrase prompt is soon spoiled by messages
"waiting for <some mountpoint>", so the boot seems to continue.

If ignoring these messages and just entering the passphrase (hitting the
enter key in the end) works, if I am fast enough(!).

However, waiting for some seconds (maybe 20), it is *not* possible to
correctly enter the passphrase any more: hitting  the enter key after
entering the passphrase does not start a new line or trigger any other
notable action from cryptsetup (i.e., I don't get any "command failed"
or "key slot xxx unlocked" messages). Hitting the enter key some times
more does the job but the passphrase is rejected and asked for again up
to three times. However, these new prompts always show the same
behavior: hitting the enter key once does not start a new line or
trigger the cryptsetup to continue as it should. Only hitting it some
more times does but the passpharse is always rejected, even if entered
correctly.

It seems that something in the subsequent boot chain partly steals
keyboard focus.

** Affects: cryptsetup (Ubuntu)
     Importance: Undecided
         Status: New

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cryptsetup passphrase prompt at boot not working if waiting too long
https://bugs.launchpad.net/bugs/468208
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