Just also tried rc5 and 6
ian@sid2:~$ journalctl -b -1
-- Logs begin at Sat 2018-05-05 12:47:44 BST, end at Mon 2018-06-11 12:48:31 BST. --
Jun 11 12:46:42 sid2 kernel: Linux version 4.17.0-rc6-siduction-amd64 (towo@siduction.org) (gcc version 7.3.0 (Debian 7.3.0-19)) #1 SMP
Jun 11 12:46:42 sid2 kernel: Command line: BOOT_IMAGE=/boot/vmlinuz-4.17.0-rc6-siduction-amd64 root=UUID=6782f1a8-05e4-4d77-addd-bb28b7
Jun 11 12:46:42 sid2 kernel: KERNEL supported cpus:
Jun 11 12:46:42 sid2 kernel: Intel GenuineIntel
Jun 11 12:46:42 sid2 kernel: AMD AuthenticAMD
Jun 11 12:46:42 sid2 kernel: Centaur CentaurHauls
Jun 11 12:46:42 sid2 kernel: x86/fpu: Supporting XSAVE feature 0x001: 'x87 floating point registers'
Jun 11 12:46:42 sid2 kernel: x86/fpu: Supporting XSAVE feature 0x002: 'SSE registers'
Jun 11 12:46:42 sid2 kernel: x86/fpu: Supporting XSAVE feature 0x004: 'AVX registers'
Jun 11 12:46:42 sid2 kernel: x86/fpu: xstate_offset[2]: 576, xstate_sizes[2]: 256
Jun 11 12:46:42 sid2 kernel: x86/fpu: Enabled xstate features 0x7, context size is 832 bytes, using 'compacted' format.
Jun 11 12:46:42 sid2 kernel: e820: BIOS-provided physical RAM map:
Jun 11 12:46:42 sid2 kernel: BIOS-e820: [mem 0x0000000000000000-0x000000000009ffff] usable
Jun 11 12:46:42 sid2 kernel: BIOS-e820: [mem 0x00000000000a0000-0x00000000000fffff] reserved
Jun 11 12:46:42 sid2 kernel: BIOS-e820: [mem 0x0000000000100000-0x0000000003ffffff] usable
Jun 11 12:46:42 sid2 kernel: BIOS-e820: [mem 0x0000000004000000-0x0000000004009fff] ACPI NVS
Jun 11 12:46:42 sid2 kernel: BIOS-e820: [mem 0x000000000400a000-0x0000000009bfffff] usable
Jun 11 12:46:42 sid2 kernel: BIOS-e820: [mem 0x0000000009c00000-0x0000000009ffffff] reserved
Jun 11 12:46:42 sid2 kernel: BIOS-e820: [mem 0x000000000a000000-0x000000000affffff] usable
Jun 11 12:46:42 sid2 kernel: BIOS-e820: [mem 0x000000000b000000-0x000000000b01ffff] reserved
Jun 11 12:46:42 sid2 kernel: BIOS-e820: [mem 0x000000000b020000-0x000000009a598fff] usable
Jun 11 12:46:42 sid2 kernel: BIOS-e820: [mem 0x000000009a599000-0x000000009a6b0fff] reserved
Jun 11 12:46:42 sid2 kernel: BIOS-e820: [mem 0x000000009a6b1000-0x000000009a6cbfff] ACPI data
Jun 11 12:46:42 sid2 kernel: BIOS-e820: [mem 0x000000009a6cc000-0x000000009a7cefff] usable
Jun 11 12:46:42 sid2 kernel: BIOS-e820: [mem 0x000000009a7cf000-0x000000009ab86fff] ACPI NVS
Jun 11 12:46:42 sid2 kernel: BIOS-e820: [mem 0x000000009ab87000-0x000000009b8abfff] reserved
Jun 11 12:46:42 sid2 kernel: BIOS-e820: [mem 0x000000009b8ac000-0x000000009b94cfff] type 20
Jun 11 12:46:42 sid2 kernel: BIOS-e820: [mem 0x000000009b94d000-0x000000009dffffff] usable
Jun 11 12:46:42 sid2 kernel: BIOS-e820: [mem 0x000000009e000000-0x00000000dfffffff] reserved
Jun 11 12:46:42 sid2 kernel: BIOS-e820: [mem 0x00000000f8000000-0x00000000fbffffff] reserved
Jun 11 12:46:42 sid2 kernel: BIOS-e820: [mem 0x00000000fd800000-0x00000000fdffffff] reserved
Jun 11 12:46:42 sid2 kernel: BIOS-e820: [mem 0x00000000fea00000-0x00000000fea0ffff] reserved
Jun 11 12:46:42 sid2 kernel: BIOS-e820: [mem 0x00000000feb80000-0x00000000fec01fff] reserved
Jun 11 12:46:42 sid2 kernel: BIOS-e820: [mem 0x00000000fec10000-0x00000000fec10fff] reserved
Jun 11 12:46:42 sid2 kernel: BIOS-e820: [mem 0x00000000fec30000-0x00000000fec30fff] reserved
Jun 11 12:46:42 sid2 kernel: BIOS-e820: [mem 0x00000000fed00000-0x00000000fed00fff] reserved
Jun 11 12:46:42 sid2 kernel: BIOS-e820: [mem 0x00000000fed40000-0x00000000fed44fff] reserved
Jun 11 12:46:42 sid2 kernel: BIOS-e820: [mem 0x00000000fed80000-0x00000000fed8ffff] reserved
Jun 11 12:46:42 sid2 kernel: BIOS-e820: [mem 0x00000000fedc2000-0x00000000fedcffff] reserved
Jun 11 12:46:42 sid2 kernel: BIOS-e820: [mem 0x00000000fedd4000-0x00000000fedd5fff] reserved
Jun 11 12:46:42 sid2 kernel: BIOS-e820: [mem 0x00000000fee00000-0x00000000feefffff] reserved
Jun 11 12:46:42 sid2 kernel: BIOS-e820: [mem 0x00000000ff000000-0x00000000ffffffff] reserved
Jun 11 12:46:42 sid2 kernel: BIOS-e820: [mem 0x0000000100000000-0x000000021f33ffff] usable
Jun 11 12:46:42 sid2 kernel: NX (Execute Disable) protection: active
Jun 11 12:46:42 sid2 kernel: efi: EFI v2.60 by American Megatrends
Jun 11 12:46:42 sid2 kernel: efi: ACPI 2.0=0x9a6b3000 ACPI=0x9a6b3000 SMBIOS=0x9b81a000 SMBIOS 3.0=0x9b819000 ESRT=0x97eb6018 MEM
Jun 11 12:46:42 sid2 kernel: SMBIOS 3.1.1 present.
Jun 11 12:46:42 sid2 kernel: DMI: System manufacturer System Product Name/PRIME B350M-E, BIOS 4011 04/19/2018
Jun 11 12:46:42 sid2 kernel: e820: update [mem 0x00000000-0x00000fff] usable ==> reserved
Jun 11 12:46:42 sid2 kernel: e820: remove [mem 0x000a0000-0x000fffff] usable
Jun 11 12:46:42 sid2 kernel: e820: last_pfn = 0x21f340 max_arch_pfn = 0x400000000
Jun 11 12:46:42 sid2 kernel: MTRR default type: uncachable
Jun 11 12:46:42 sid2 kernel: MTRR fixed ranges enabled:
Jun 11 12:46:42 sid2 kernel: 00000-9FFFF write-back
Jun 11 12:46:42 sid2 kernel: A0000-BFFFF write-through
Jun 11 12:46:42 sid2 kernel: C0000-FFFFF write-protect
Jun 11 12:46:42 sid2 kernel: MTRR variable ranges enabled:
Jun 11 12:46:42 sid2 kernel: 0 base 000000000000 mask FFFF80000000 write-back
Jun 11 12:46:42 sid2 kernel: 1 base 000080000000 mask FFFFC0000000 write-back
Jun 11 12:46:42 sid2 kernel: 2 base 0000C0000000 mask FFFFE0000000 write-back
Jun 11 12:46:42 sid2 kernel: 3 disabled
Jun 11 12:46:42 sid2 kernel: 4 disabled
Jun 11 12:46:42 sid2 kernel: 5 disabled
Jun 11 12:46:42 sid2 kernel: 6 disabled
Jun 11 12:46:42 sid2 kernel: 7 disabled
Jun 11 12:46:42 sid2 kernel: TOM2: 0000000220000000 aka 8704M
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