2
Check my answer here
https://elementaryos.stackexchange.com/a/16901/14940
Is only a bypass but still a way to see fullscreen videos while isn't fixed
2
Stop lightdm (the login screen) with
sudo systemctl stop lightdm from tty1;
then run
sudo su
to login as root; then delete the .Xauthority file with
rm -f ./.Xauthority,
and then reboot.
1
Ok, so I get to answer my own question. This is not an elementary OS issue, but rather a general Linux thing. Apparently, X likes to break inputs on upgrade.
To fix this, I just rebooted into recovery mode, enabled networking and dropped into root and ran apt-get install xserver-xorg-input-all
Just like that, I'm back in business.
Original solution
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I succeed solving this issue by luis_nando's answer. What I did step-by-step:
Install netext73
$ apt-add-repository ppa:netext/netext73 && apt-get update && apt-get install netext73
$ sudo netext73
Go through the first installation
Check Hibernate in the optimizer
found on Reddit Solution Fix
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