I upload another log file. journalctl_OK.txt use journalctl -b 1 command, it is boot up normaly
journalctl_NG.txt use journalctl -b 2 command, it is boot up failer. -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to gnome-shell in Ubuntu. https://bugs.launchpad.net/bugs/1840571 Title: ubuntu 18.04.3 startup purple screnn blink and could not start To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-shell/+bug/1840571/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs