Xubuntu with LUKS FDE hangs upon boot after Hirsute upgrade

Bug #1926972 reported by yitzhaq on 2021-05-03

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This bug affects 1 person
Affects Status Importance Assigned to Milestone
cryptsetup (Ubuntu)

Bug Description

After upgrading to Hirsute, I'm unable to boot my Xubuntu laptop with LUKS FDE. It was working fine on Groovy, and I have made no changes besides upgrading.

The system now hangs on boot. Nothing is displayed (completely black screen, no passphrase prompt, no cursor, nothing), and the keyboard does not respond (not even Caps Lock). This does not appear to be the reported known Xubuntu issue about having to press ESC (once or twice) to see the password prompt; as mentioned, the keyboard does not appear to respond at all. I have also confirmed that this is not #1915579, as the installed lvm2 version includes the fix, and I have manually confirmed that /usr/share/initramfs-tools/hooks/lvm2 is 755.

/etc/crypttab looks fine as far as I can tell, and nothing complained during upgrade. I have tried doing dpkg-reconfigure (and apt-get install --reinstall) against grub-pc, initramfs-tools, cryptsetup and the latest installed kernel, to no avail. No complaints from any of that either.

~ # cat /etc/crypttab
sda4_crypt UUID=<my-uuid-is-listed-here> none luks,discard

All package versions are current as of writing (including hirsute, hirsute-updates, hirsute-security). The volume mounts fine when booting from installation media.

Not sure which package to report this against, as I don't know where the problem is located.

HW in case it matters (though I doubt it) is a Lenovo ThinkPad X220 running latest BIOS (1.46), with Samsung 860 EVO S-ATA. BIOS is configured with "Legacy first", rather than UEFI.

Any help greatly appreciated.

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tags: added: bot-comment
yitzhaq (yitzhaq) wrote :

Let's try cryptsetup. Perhaps better to have the wrong package than no package at all.

affects: ubuntu → cryptsetup (Ubuntu)
Brian Murray (brian-murray) wrote :

Does the same thing happen if you try to boot the system using an Ubuntu 21.04 installation media e.g. a burned DVD or USB stick?

Changed in cryptsetup (Ubuntu):
status: New → Incomplete
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