Of course, installed 4.15.0-041500rc1-generic kernel from upstream. Results by added boot options: <none>: reboots acpi=off: works without ACPI info acpi=ht: reboots pci=noacpi: freezes after kernel loading acpi=noirq: freezes after kernel loading pnpacpi=off: freezes after kernel loading noapic: reboots nolapic: boots, shows kernel messages and then freezes
More information: `sudo acpidump` returns: Cannot open directory - /sys/firmware/acpi/tables Could not get ACPI tables, AE_NOT_FOUND `sudo fwts acpidump` in attachment. ** Attachment added: "results.log" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1735024/+attachment/5016295/+files/results.log ** Tags added: kernel-bug-exists-upstream -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1735024 Title: Cannot boot without acpi=off To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1735024/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
