I can't login in my gdm3 usual session and it goes [in loop like there]. I made
sudo adduser test, and things go just fine with that user.
Before I got in that loop I did update/upgrade my system, install blueman, and edited iwlwifi files for slow connexion troubleshooting.
I since reversed the edit I made in that iwlwifi file, trying to resolve my login loop, and uninstalled blueman, I also purge gdm3 and install it back...
I installed lightdm to log in (it works, selecting lxde in the login screen...) but I'd really rather use gdm3.
I cannot login in both "Ubuntu" and "Ubuntu on Wayland" with that main account, but I do can in LXDE ; and with the testing account, I can login with Ubuntu and Ubuntu on Wayland.
Any path I didn't think of ?
Edit : I'm Ubuntu 20.04 LTS / kernel 5.4.0-29 ; x86
UPDATE : I don't really know how, my guess is by
sudo apt purge gdm3 lightdm reboot
sudo apt install gdm3 sudo apt install lightdm reboot
I come to the lightdm login screen and, then, I can login to my usual user account just fine, as Ubuntu-defaut or Ubuntu on Wayland.
BUT if I run
sudo dpkg-reconfigure gdm3 I get an error that gmd3 is not loaded. Ok then, I do it for lightdm then choose gdm3. I saw this trick sooner. Reboot, came to the gdm3 login screen. And it login loop again just as before.
On ttyX, I run again
sudo dpkg-reconfigure gdm3 to select
gdm3 properly. No luck after reboot.
I then, on ttyX,
sudo dpkg-reconfigure lightdm and here I am. I can do with that, but it's unfortunate
gdm3 seems to be broken, and I'd like to know why it is... I could login in LXDE with gdm3.