I have the same (or similar) problem. To resolve the freezing of most of the gui applications, I have to repeat the logoff-login operation, pressing the shortkey-combinations CTRL + ALT + F1, and the problem seems to disapere.
MY PC/OS configuration ------------------------------------------------ ~$ neofetch --stdout --------------- OS: Ubuntu 18.04.5 LTS x86_64 Host: OptiPlex 7020 01 Kernel: 4.15.0-140-generic Uptime: 2 hours, 3 mins Packages: 4285 Shell: bash 4.4.20 Resolution: 1280x960 DE: GNOME 3.28.4 WM: GNOME Shell WM Theme: Adwaita Theme: Ambiance [GTK2/3] Icons: Ubuntu-mono-dark [GTK2/3] Terminal: gnome-terminal CPU: Intel i5-4590 (4) @ 3.700GHz GPU: Intel HD Graphics 4600 Memory: 6467MiB / 28045MiB ------------------------------------------------ ~$ dpkg -l | grep gdm3 ii gdm3 3.28.3-0ubuntu18.04.6 amd64 GNOME Display Manager -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1777405 Title: Freezes on switching back from second login To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gdm3/+bug/1777405/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
