My Lenovo T440p (with optimus - i915, nouveau) running 20.04 (Kernel 5.4.0-33) is also affected. If I connect an external monitor (Dell U2515H) to it via Displayport it freezes at boot.
As workaround I switched from GDM to LightDM. With LightDM it boots straight to the login screen. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1874194 Title: Ubuntu 20.04 HDMI connected, no boot To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1874194/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
