I just upgraded to 22.04. Now, when I turn my laptop on, there is text in the top-left corner saying: "Reset System", before it turns off. It then turns on again, only to do the same thing. Any help?

Specs:
Acer Aspire E5-575
Plasma 5.26, based on Ubuntu 22.04

I got the same issue today when I turned on my PC.
Though I didn't update to 22.04. I just did a normal update a few day ago.
I did do a full system backup a few days ago before I updated the system and have now restored it from the backup and it is working fine.

I decided to see if I was able to reproduce this problem.
I did a full system update on a laptop that I installed KDE neon on about 3 months using the most recent ISO of the user build at the time.
The update went fine and I was able to restart the system a few times without any issues.
So then I decided to install just the system upgrade on my affected system after I had done a full system restore and bingo.
The same error happened. Below is a screenshot of the update that caused the issue(boot loop)
https://postimg.cc/PLHdrQtm

I believe I have now worked out the problem and have a solution.
In the BIOS disable SGX(Intel Software Guard Extensions)
No more boot loop issue

Another PC also needed the TPM(Trusted Platform Module) set to hidden instead of available as-well as SGX turned off.
Probably a good idea to update the BIOS.

Hi guys,

I faced the same issue and didn't find solution for this problem.

What I've managed to find is:
My system boot successfully after update but, when I run

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sudo apt update

I'm receiving this error.

W: file:/var/lib/preinstalled-pool/dists/jammy/Release.gpg: Key is stored in legacy trusted.gpg keyring (/etc/apt/trusted.gpg), see the DEPRECATION section in apt-key(8) for details.
W: Failed to fetch https://repo.nordvpn.com/deb/nordvpn/de ... /InRelease Could not handshake: Error in the pull function. [IP: 64:ff9b::6811:324a 443]
W: Some index files failed to download. They have been ignored, or old ones used instead.

When I fixed the problem with release key, I got a message that two packages can be upgraded.

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apt list --upgradable
Listing... Done
grub-efi-amd64-bin/jammy-updates 2.06-2ubuntu10 amd64 [upgradable from: 2.06-2ubuntu7]
grub-efi-amd64-signed/jammy-updates 1.182~22.04.1+2.06-2ubuntu10 amd64 [upgradable from: 1.180+2.06-2ubuntu7]


After installing this two packages my system endup in the boot loop which I do not know how to fix. Downgrading the packages didn't fix the problem.

One more point I think important to mentioned is that this packages are only highlighted to be upgraded when I run apt command in the terminal. Discover doesn't see them.

Any idea why this two packages breaking the system.

PS.

I've checked the bios of my laptop and I do not have an option for "Intel Software Guard Extension" or "Trusted Platform Module".