Public bug reported:

It seems that this 
iucode_tool -lS /lib/firmware/intel-ucode/
iucode_tool: system has processor(s) with signature 0x000306a9
selected microcodes:
001: sig 0x000306a9, pf mask 0x12, 2018-02-07, rev 0x001f, size 13312
microcode update prevents me to boot to graphic session on any([37]) 
I can successfully boot to the recovery console.
In some of failed attempts i got "NMI deadlock detected on CPU0,1,3 in mkswap"
I guess nvidia-384 has some issues and conflicts with updated microcode.
I have to disable microcode update with 
IUCODE_TOOL_EXTRA_OPTIONS="--date-after=2018-02-07" to get my unity session 

ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: xorg 1:7.7+13ubuntu3
ProcVersionSignature: Ubuntu 4.13.0-38.43~16.04.1-generic 4.13.16
Uname: Linux 4.13.0-38-generic x86_64
NonfreeKernelModules: nvidia_uvm nvidia_drm nvidia_modeset nvidia
.proc.driver.nvidia.gpus.0000.01.00.0: Error: [Errno 21] Это каталог: 
.proc.driver.nvidia.registry: Binary: ""
 NVRM version: NVIDIA UNIX x86_64 Kernel Module  384.111  Tue Dec 19 23:51:45 
PST 2017
 GCC version:  gcc version 5.4.0 20160609 (Ubuntu 5.4.0-6ubuntu1~16.04.9)
ApportVersion: 2.20.1-0ubuntu2.15
Architecture: amd64
 lvmetad is not active yet, using direct activation during sysinit
 /dev/mapper/lmvg-ubunturoot: clean, 421309/1310720 files, 3715643/5242880 
CompositorRunning: compiz
CompositorUnredirectDriverBlacklist: '(nouveau|Intel).*Mesa 8.0'
CompositorUnredirectFSW: true
CurrentDesktop: Unity
Date: Wed Apr  4 12:39:37 2018
DistUpgraded: 2016-04-19 13:48:02,030 ERROR got error from PostInstallScript 
./ (g-exec-error-quark: Не удалось выполнить 
процесс-потомок «./» (No such file or directory) (8))
DistroCodename: xenial
DistroVariant: ubuntu
 NVIDIA Corporation GK107 [GeForce GT 640] [10de:0fc1] (rev a1) (prog-if 00 
[VGA controller])
   Subsystem: Gigabyte Technology Co., Ltd GK107 [GeForce GT 640] [1458:353e]
InstallationDate: Installed on 2012-09-26 (2015 days ago)
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Beta amd64 (20120301)
MachineType: Gigabyte Technology Co., Ltd. To be filled by O.E.M.
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.13.0-38-generic 
root=/dev/mapper/lmvg-ubunturoot ro nouveau.modeset=0 
rd.driver.blacklist=nouveau video=vesa:off nvidia_drm.modeset=1 zswap.enabled=0 
SourcePackage: xorg
UpgradeStatus: Upgraded to xenial on 2016-04-19 (714 days ago) 10/12/2012
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: F1
dmi.board.asset.tag: To be filled by O.E.M. H61M-DS2 DVI
dmi.board.vendor: Gigabyte Technology Co., Ltd.
dmi.board.version: x.x
dmi.chassis.asset.tag: To Be Filled By O.E.M.
dmi.chassis.type: 3
dmi.chassis.vendor: Gigabyte Technology Co., Ltd.
dmi.chassis.version: To Be Filled By O.E.M.
dmi:bvnAmericanMegatrendsInc.:bvrF1:bd10/12/2012:svnGigabyteTechnologyCo.,Ltd.:pnTobefilledbyO.E.M.:pvrTobefilledbyO.E.M.:rvnGigabyteTechnologyCo.,Ltd.:rnH61M-DS2DVI:rvrx.x:cvnGigabyteTechnologyCo.,Ltd.:ct3:cvrToBeFilledByO.E.M.: To be filled by O.E.M. To be filled by O.E.M.
dmi.product.version: To be filled by O.E.M.
dmi.sys.vendor: Gigabyte Technology Co., Ltd.
version.compiz: compiz 1:
version.ia32-libs: ia32-libs N/A
version.libdrm2: libdrm2 2.4.83-1~16.04.1
version.libgl1-mesa-dri: libgl1-mesa-dri 17.2.8-0ubuntu0~16.04.1
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 17.2.8-0ubuntu0~16.04.1
version.nvidia-graphics-drivers: nvidia-graphics-drivers-* N/A
version.xserver-xorg-core: xserver-xorg-core N/A
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev N/A
version.xserver-xorg-video-ati: xserver-xorg-video-ati N/A
version.xserver-xorg-video-intel: xserver-xorg-video-intel N/A
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau N/A
xserver.bootTime: Wed Apr  4 11:56:19 2018
xserver.configfile: default
xserver.logfile: /var/log/Xorg.0.log
xserver.version: 2:1.19.5-0ubuntu2~16.04.1

** Affects: xorg (Ubuntu)
     Importance: Undecided
         Status: New

** Tags: amd64 apport-bug compiz-0.9 ubuntu xenial

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  Latest intel ucode update halts my system during boot to graphic

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