Comment 16 for bug 1812359

I did following:

1. Enable Wayland with #WaylandEnable=false

2. Remove ppa, purge xserver-xorg-video-intel, update apt list, and again install xserver-xorg-video-intel.

Now,

Package: xserver-xorg-video-intel
Status: install ok installed
Priority: optional
Section: x11
Installed-Size: 3183
Maintainer: Ubuntu Developers <email address hidden>
Architecture: amd64
Version: 2:2.99.917+git20171229-1
Provides: xorg-driver-video
Depends: libc6 (>= 2.17), libdrm-intel1 (>= 2.4.38), libdrm2 (>= 2.4.25), libpciaccess0 (>= 0.8.0+git20071002), libpixman-1-0 (>= 0.30.0), libudev1 (>= 183), libx11-6, libx11-xcb1, libxcb-dri2-0, libxcb-dri3-0, libxcb-sync1, libxcb-util1 (>= 0.4.0), libxcb1, libxcursor1 (>> 1.1.2), libxdamage1 (>= 1:1.1), libxext6, libxfixes3, libxinerama1, libxrandr2 (>= 2:1.2.99.2), libxrender1, libxshmfence1, libxss1, libxtst6, libxv1, libxvmc1, xorg-video-abi-23, xserver-xorg-core (>= 2:1.18.99.901)
Description: X.Org X server -- Intel i8xx, i9xx display driver
 This package provides the driver for the Intel i8xx and i9xx family
 of chipsets, including i810, i815, i830, i845, i855, i865, i915, i945
 and i965 series chips.
 .
 This package also provides XvMC (XVideo Motion Compensation) drivers
 for i810/i815 and i9xx and newer chipsets.
 .
 This package is built from the X.org xf86-video-intel driver module.
 .
 The use of this driver is discouraged if your hw is new enough (ca.
 2007 and newer). You can try uninstalling this driver and let the
 server use it's builtin modesetting driver instead.
Original-Maintainer: Debian X Strike Force <email address hidden>
Homepage: https://www.x.org/

3. Reboot system and no login screen

4. Reboot into recovery mode and did journalctl -b-1 > new_boot.txt

If you suggest me to do fresh installation again, I will.