ok - the best I could do is the following: boot the live iso with nomodeset. chroot onto the hard-drive and install openssh-server and in /etc/modprobe.d/blacklist.conf added install i915 /bin/false and then ran update-initramfs -u
Then booted the machine without the USB stick ensuring nomodeset was removed by grub. This booted to lightdm ssh'd to the machine sudo systemctl stop lightdm edited /etc/modprobe.d/blacklist.conf and commented out the install line I added. saved and reran update-initramfs -u This time check dmesg was ok. Then ran sudo modprobe -v i915. Checked dmesg again - saw the trace attached ** Attachment added: "modprobe 915" https://bugs.launchpad.net/ubuntu/+source/linux-hwe/+bug/1838698/+attachment/5281583/+files/modprobe%20915 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1838698 Title: Cannot boot ISO unless using nomodeset To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux-hwe/+bug/1838698/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs