Ubuntu 18.04 after restarting laptop keyboard and touchpad not working

[Kushal Borkar]

After installing Ubuntu 18.04, I updated and upgraded the system using terminal, installed Ubuntu-mate-welcome and Gnome Tweak Tool. Then I restarted my machine. After login into the system, I don't see anyway to click on any of the icons and opening terminal using "Ctrl+Alt+T". I also went to recovery mode to repair the broken packages and cleaning the system. But after login, I faced the same problem. To reproduce the error:
1. Install Ubuntu with of the essential packages.
2. Login into the system.
3. Observe the error.
---
ApportVersion: 2.20.9-0ubuntu7
Architecture: amd64
DisplayManager: gdm3
DistroRelease: Ubuntu 18.04
InstallationDate: Installed on 2018-05-10 (0 days ago)
InstallationMedia: Ubuntu 18.04 LTS "Bionic Beaver" - Release amd64 (20180426)
Package: gnome-shell 3.28.1-0ubuntu2
PackageArchitecture: amd64
ProcEnviron:
 TERM=linux
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_IN
 SHELL=/bin/bash
ProcVersionSignature: Ubuntu 4.15.0-20.21-generic 4.15.17
Tags: bionic third-party-packages
Uname: Linux 4.15.0-20-generic x86_64
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo
_MarkForUpload: True

[Daniel van Vugt (vanvugt)]

Thank you for taking the time to report this bug and helping to make Ubuntu better. Please log into a VT (Ctrl+Alt+F4) and execute the following command only once, as it will automatically gather debugging information, in a terminal:

apport-collect 1770459

When reporting bugs in the future please use apport by using 'ubuntu-bug' and the name of the package affected. You can learn more about this functionality at https://wiki.ubuntu.com/ReportingBugs.

[Kushal Borkar (lashuk)]

apport information

[Kushal Borkar (lashuk)]

apport information

[Kushal Borkar (lashuk)]

apport information

[Daniel van Vugt (vanvugt)]

Please try reinstalling again fresh without making any configuration changes or installing additional packages.

Then:

1. Does the problem occur when you haven't yet installed anything?

2. Make changes to the system one-at-a-time and reboot each time. After which change does the bug occur?

[Kushal Borkar (lashuk)]

Okay, I'll do the above mentioned task and will report it in the comment.
Thank you.

[Launchpad Janitor (janitor)]

[Expired for gnome-shell (Ubuntu) because there has been no activity for 60 days.]