Ubuntu 18.04 Installation Crashes

[jsc39]

I have been trying to install Ubuntu 18.04 on my Acer Nitro 5 (an515-51) [Dual - booting with Windows]. As soon as I boot from a bootable USB it takes me to the installation page and after some time around the Wifi Detection Page the keyboard and touchpad stop working. I have the same problem of touchpad and keyboard not working on OpenSuse TumbleWeed Installation as well as Anarchy Installation.
I tried changing the touchpad settings from advanced to basic still the touchpad doesnt work.
Any help appreciated..

[oldfred]

Since it has nVidia, are you using nomodeset?
At grub menu you can use e for edit, scroll to linux line and replace quiet splash with nomodeset.
How to set NOMODESET and other kernel boot options in grub2 - both BIOS liveCD & grub first boot ( also UEFI with grub)
How to add boot parameters, grub menu after install (also grub when UEFI)
https://wiki.ubuntu.com/Kernel/KernelBootParameters
https://help.ubuntu.com/community/Grub2
http://ubuntuforums.org/showthread.php?t=1613132

Once installed all Acer have needed "Trust" and updates to UEFI.
Have you updated UEFI from Acer? May also help on your other issues.

Acer Trust Settings - details, some now report that then secure boot has to be on to set trust:
https://ubuntuforums.org/showthread....2#post13369742
https://ubuntuforums.org/showthread.php?t=2358003
https://ubuntuforums.org/showthread....7#post13341757

Acer Cloudbook shows screen for selecting trust
http://bernaerts.dyndns.org/linux/74...-cloudbook-431
http://community.acer.com/t5/Predato...430392#U430392
InsydeH20 setup utility
Acer Very latest UEFI/BIOS works, downgrade not required:
http://ubuntuforums.org/showthread.p...1#post13419141

[jsc39]

Thanks for the help. I was able to install Ubuntu but the brightness control was not working. I tried installing Nvidia Drivers using the command

sudo add-apt-repository ppa:graphics-drivers
sudo apt-get update

sudo apt-get install nvidia-390

Then I rebooted the system but the boot got stuck
https://imgur.com/AjV7q6T
Screenshot is attached

[oldfred]

That is not showing any errors?
Have you tried recovery mode from grub menu?

[jsc39]

The above mentioned screen is where the boot stops.
What should I do in the Recovery Mode??

[oldfred]

Does recovery mode boot?
If so it gives a menu with options to try to resolve issues using command line or just continuing boot from there.

[jsc39]

Thanks was able to boot into recovery and uninstall those drivers.
Brightness control is not working.
Can you guide me here

[oldfred]

Google found multiple but old threads which may not now apply.


https://ubuntuforums.org/showthread.php?t=1962255
https://wiki.archlinux.org/index.php/backlight

https://askubuntu.com/questions/1808...on-acer-laptop

[jsc39]

https://postimg.cc/gallery/2tuakuhg8/

Here is some information

[oldfred]

Once you install the proprietary nVidia driver from Ubuntu repository, you do not use nomodeset.
Normally you then do not add nomodeset to /etc/default/grub, but just manually when booting as only needed on first boot. It may prevent nVidia driver from working correctly.

If wrong nVidia driver or upgrade, you must purge & install correct driver
https://ubuntuforums.org/showthread....6#post13649946
https://ubuntuforums.org/showthread....9#post13742959 by 1fallen

You can easily attach screen shots with Forum's advanced editor and the paperclip icon.
But if text or terminal output better to just copy & paste and if longer include in code tags, using # icon.