I'm using Ubuntu 20.04 LTS (upgraded from original install of 18.04.4 LTS) on an HP Eitebook 2560 Intel Core i5
Trying to investigate a system issue where the UI became unresponsive at the lock screen. Finding lots of the following errors in the /var/log/syslog
file around the time when it became unresponsive.
May 7 12:31:00 hp-ubuntu gnome-shell[2046]: JS ERROR: TypeError: windowActor is null#012_addWindowEffect@resource:///org/gnome/shell/ui/closeDialog.js:90:28#012vfunc_show@resource:///org/gnome/shell/ui/closeDialog.js:162:14
May 7 12:31:13 hp-ubuntu gnome-shell[2046]: message repeated 13988 times: [ JS ERROR: TypeError: null has no properties#012_onFocusChanged@resource:///org/gnome/shell/ui/closeDialog.js:135:9#012_setTransitionProgress@resource:///org/gnome/shell/ui/unlockDialog.js:715:9#012_init/<@resource:///org/gnome/shell/ui/unlockDialog.js:494:18]