Created an account just to confirm I too am hit with this bug.
Started as 19.04 running on Ryzen 2700X, 32G, RTX2060 with nVidia 430
drivers.
After successfully upgrading from 19.04 to 19.10, or so I thought, I was
met with the login screen upon system reboot. This was very strange as
I had auto-login set to true with 19.04 so I should *not* be seeing this
login screen.
My linux-fu is weak as I'm currently transitioning from OS X to Linux
and was completely lost on how to continue. The solution was to go
scorched earth and do a clean install of 19.10. My /home directory is
on a separate drive so I was confident things would work out ok.
The clean install went well but at this point I was still unaware that
the issue was related to the auto-login (and perhaps nvidia 435 combo).
So after modding my fstab and rebooting I was confronted again with the
login screen and not being able to login (ie, no matter how many times I
typed my password the login screen would ignore me).
After some Googling I discovered this page you are reading now.
I did another clean install but this time I mv'd .config and .local in
my /home directory to borked.config and borked.local (as mentioned, my
linux-fu is weak but I assumed that my previous auto-login setting is
stored in a pref file *somewhere* in either of those directories).
After updating fstab I then toggled the auto-login a few times to ensure
the prefs would show it clearly in the OFF position. Then I rebooted.
SUCCESS. The login screen appeared but this time I *was* able to login
— I spent another hour moving files from my *borks* back to .config and
.local and I'm mostly back to normal.
As mentioned by anidotnet above, this is my second update (18.04 > 18.10
&& 19.04 > 19.10) and both were extremely unpleasant with this latest
update taking the cake.
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You received this bug notification because you are a member of Ubuntu
Desktop Bugs, which is subscribed to gnome-session in Ubuntu.
https://bugs.launchpad.net/bugs/1845801
Title:
[nvidia] Automatic login fails and then all subsequent logins fail.
Killing gnome-session-binary fixes it, or just not using automatic
login.
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/gdm3/+bug/1845801/+subscriptions
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