Public bug reported: I Installed focal from the daily-pending ISO image, timestamp 2020-02-21 07:52
In the installer I selected LVM + LUKS. Upon reboot I am shown a text plymouth theme, which is an incorrect screen size and the LUKS password prompt is missing. See attached screenshot. If you enter your LUKS key into the blank screen and press enter, boot continues but gets stuck at the end. plymouth does not transition to GDM. To get GDM to show, you need to switch to VT3 and back to VT1 with ctrl-alt-f3 and ctrl-alt-f1. GDM will then show and allow the user to log in. I did some research, and it seems on focal, the default plymouth theme is bgrt, and is a part of the plymouth-theme-spinner package: $ sudo update-alternatives --config default.plymouth [sudo] password for ubuntu: There are 2 choices for the alternative default.plymouth (providing /usr/share/plymouth/themes/default.plymouth). Selection Path Priority Status ------------------------------------------------------------ * 0 /usr/share/plymouth/themes/bgrt/bgrt.plymouth 110 auto mode 1 /usr/share/plymouth/themes/bgrt/bgrt.plymouth 110 manual mode 2 /usr/share/plymouth/themes/ubuntu-logo/ubuntu-logo.plymouth 100 manual mode $ sudo apt-file search /usr/share/plymouth/themes/bgrt/bgrt.plymouth plymouth-theme-spinner: /usr/share/plymouth/themes/bgrt/bgrt.plymouth plymouth-theme-spinner is not installed on eoan, and ubuntu-logo is the only theme installed on eoan. I attempted to remove plymouth-theme-spinner and change the plymouth theme to ubuntu-logo, and it sort of works. plymouth can now change to GDM without having to swap VTs, but the screen is totally blank and there is no LUKS password prompt. All of this is reproducible on a focal installed to KVM. ** Affects: plymouth (Ubuntu) Importance: Critical Status: New ** Tags: champagne focal ** Attachment added: "Screenshot of bgrt theme waiting on password prompt which doesnt exist" https://bugs.launchpad.net/bugs/1864586/+attachment/5330762/+files/Screenshot%20from%202020-02-25%2015-02-51.png -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1864586 Title: plymouth does not ask for LUKS password and does not change tty properly To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/plymouth/+bug/1864586/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs