I ran into this problem with a new install of 20.04 on a Dell Optiplex 5060. This system has integrated Display Ports. Hangs at boot with Ubuntu spinning for hours. My configuration has a single monitor attached via Display port/HDMI cable and DVI adapter to monitor DVI input.
Two workarounds mentioned here worked for me: 1) boot with monitor cable unplugged and then plug cable in to see login screen 2) remove "splash quiet" in /etc/default/grub, then boot to login screen -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to gdm3 in Ubuntu. https://bugs.launchpad.net/bugs/1872159 Title: Boot animation never finishes when external monitors (or just more than one) are connected To manage notifications about this bug go to: https://bugs.launchpad.net/plymouth/+bug/1872159/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
