Update for summarizing current symptoms and workaround solution:
[Steps to reproduce]
1. Enable auto login through GUI ("Settings"->"Users"->"Automatic Login" to
enable)
2. reboot
3. system stop at gdm login screen
There are two symptom I found currently:
4.1 enter correct password is not able to login
4.2 enter correct password manually and it can login
[Workaround]
Here are two workaround solution from comment#31 and comment#71:
1. Removing 'splash' from kernel command line
2. Adding 'nvidia-drm.modeset=1' in kernel command line
[Environments]
product: Lenovo ThinkStation P720[1]
bios-version: S04KT41A
CPU: Intel(R) Xeon(R) Gold 6240C CPU @ 2.60GHz (72x)
GPU: 18:00.0 VGA compatible controller [0300]: NVIDIA Corporation GP106GL
[Quadro P2000] [10de:1c30] (rev a1)
kernel-version: 5.6.0-1010-oem
nvidia-driver: nvidia-driver-440
[1]
https://www.lenovo.com/gb/en/workstations/p-series/ThinkStation-P720/p/33TS3TPP720
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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/oem-priority/+bug/1845801/+subscriptions
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