We were pointed at a newer firmware for the RAID controller 29.00.1-0356 (it wasn't immediately clear that this was available for our generation of blade), and the system boots properly on both 4.15.0-66-generic and 5.0.0-23-generic.
I think that this should be closed. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1850550 Title: megaraid_sas driver in linux-modules-4.15.0-66-generic prevents server with "Cisco UCS C3000 RAID Controller for M4 Server Blade" from booting To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux-hwe/+bug/1850550/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
