Public bug reported:
Ubuntu Release: Ubuntu 20.04.3 LTS
Installation Style: Minimal (selected during GUI install) (Untested against
full installation style)
Patient System Hardware Information: Lenovo ThinkPad P50 (Xenon) - Intel HD
Graphics + NVIDIA Quadro M2000M (NVIDIA Prime enabled w/proprietary drivers)
(GPU is not suspected to be the issue)
Expected Behavior:
1) Suspend the system into sleep mode. 2) Awake the system to be greeted by
lock screen. 3) Type in password, press enter. 4)GNOME validates password
successfully. 5) Resume user desktop session.
Actual Behavior:
1) Suspend the system into sleep mode. 2) Awake the system to be greeted by
lock screen. 3) Type in password, press enter. 4)GNOME validates password
successfully. 5) GNOME lock screen freezes - spinner stops moving but mouse
cursor and keyboard are responsive (can switch TTYs). After GNOME lock screen
freeze, if you switch out of TTY2 (default for GUI), and back into it, a black
screen is shown. If you attempt to login via TTY1, you are switched to the
black screen session in TTY2.
Solution / Workaround:
This behavior can be avoided by installing the "gnome-scrensaver" package.
Something in this package is required by GNOME in order to successfully resume
this system from suspend, even though no screen saver settings were configured
after installing it.
** Affects: ubuntu
Importance: Undecided
Status: New
** Tags: unmetdeps
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https://bugs.launchpad.net/bugs/1944060
Title:
Black Screen after Session Unlock from Suspend
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