UC18 on the same hardware starts to display kernel messages at the 14s mark. UC18 logs shows no delay between the "console [tty1] enabled" and "console [ttyS0] enabled" messages, but otherwise the behavior is similar (blank screen for some time and slow output rate).
[ 0.000000] console [tty1] enabled [ 0.000000] console [ttyS0] enabled ** Attachment added: "dmesg-thinkcentre-uc18.txt" https://bugs.launchpad.net/ubuntu/+source/snapd/+bug/1879290/+attachment/5376576/+files/dmesg-thinkcentre-uc18.txt -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1879290 Title: pc: no message on the screen for ~30s on fast HW To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1879290/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs