@vicamo I tried your boot parameters, I'm attaching photos of the boot sequence in a zip file.
I don't understand why booting work when "power" is connected (2 thunderbolt dock or notebook charger) and not when on battery. ** Attachment added: "boot sequence photos" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1853369/+attachment/5327640/+files/sequence.7z -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1853369 Title: [19.10] Boot hangs at "loading initial ramdisk" To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/grub2/+bug/1853369/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs