Comment 28 for bug 1749040

Yep, if it boots fine, i usually retry 2/3 times, and it has happened that it failed only the second or the third time i tried.

Anyhow, now i'm down to this delta .config (the initial one had ~2k entries), so the bug appears to be ACPI related:

-------------------------------------------------------------------------------
CONFIG_ACPI=y
CONFIG_ACPI_APEI=y
CONFIG_ACPI_APEI_GHES=y
CONFIG_ACPI_APEI_MEMORY_FAILURE=y
CONFIG_ACPI_APEI_PCIEAER=y
CONFIG_ACPI_APEI_SEA=y
CONFIG_ACPI_BGRT=y
CONFIG_ACPI_BUTTON=y
CONFIG_ACPI_CCA_REQUIRED=y
CONFIG_ACPI_CONTAINER=y
CONFIG_ACPI_CPPC_LIB=y
CONFIG_ACPI_DOCK=y
CONFIG_ACPI_FAN=y
CONFIG_ACPI_GENERIC_GSI=y
CONFIG_ACPI_GTDT=y
CONFIG_ACPI_HED=y
CONFIG_ACPI_HOTPLUG_CPU=y
CONFIG_ACPI_I2C_OPREGION=y
CONFIG_ACPI_IORT=y
CONFIG_ACPI_MCFG=y
CONFIG_ACPI_NUMA=y
CONFIG_ACPI_PCI_SLOT=y
-------------------------------------------------------------------------------

How to reproduce it from d05-6 - 192.168.122.14 is my kvm instance:

$ make defconfig
$ cat $abovedelta >> .config
$ make olddefconfig
$ make -j65
$ scp arch/arm64/boot/Image ubuntu@192.168.122.14:.
$ ssh ubuntu@192.168.122.14

and inside the kvm instance:

$ sudo cp Image /boot/
and when rebooting, presc Esc at the grub menu, select the "Image" entry previously created[*]

*: in /boot/grub/grub.cfg create a copy of the default Ubuntu instance, but use /boot/Image instead of /boot/vmlinuz-x.y.z, remove "quiet splash" from the default argument and rename it 'Image'