Public bug reported:

[Impact]
Ubuntu 18.04 install  is unable to detect integrated Intel graphics card UHD 
620. Using a Dell Inspiron 7391 13 2-in-1 the machine is unable to detect 
attached monitors, change resolutions, or adjust brightness.
 No Dual Boot, running linux Ubuntu 18.04.4

$ lsb_release -rd
Description:    Ubuntu 18.04.4 LTS
Release:        18.04

% uname -o
GNU/Linux

$ apt-cache policy xserver-xorg-video-intel
xserver-xorg-video-intel:
  Installed: 2:2.99.917+git20171229-1
  Candidate: 2:2.99.917+git20171229-1
  Version table:
 *** 2:2.99.917+git20171229-1 500
        500 http://ubuntu.ntc.net.np/ubuntu bionic/main amd64 Packages
        100 /var/lib/dpkg/status

$ lspci -v
00:02.0 VGA compatible controller: Intel Corporation Device 9b41 (rev 02) 
(prog-if 00 [VGA controller])
        Subsystem: Dell Device 0960
        Flags: bus master, fast devsel, latency 0, IRQ 255
        Memory at 6022000000 (64-bit, non-prefetchable) [size=16M]
        Memory at 4000000000 (64-bit, prefetchable) [size=256M]
        I/O ports at 3000 [size=64]
        [virtual] Expansion ROM at 000c0000 [disabled] [size=128K]
        Capabilities: <access denied>


System Settings -> Details:
Graphics llvmpipe (LLVM 9.0, 256 bits)

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

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which is subscribed to xorg-server in Ubuntu.
https://bugs.launchpad.net/bugs/1868358

Title:
  intel graphics not detected and showing llvmpipe

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