>From the log, it will repeatedly report below errors. Looks like the The gdm-session-worker was called when fprintd return's failure. Looks related to latest change in gnome-shell.
- Show errors on fingerprint failures and limit retries (LP: #1865838) Jun 15 06:48:47 Lynx-4 gdm3[1022]: Freeing conversation 'gdm-fingerprint' with active job Jun 15 06:48:48 Lynx-4 gdm-password][1986]: pam_unix(gdm-password:auth): Couldn't open /etc/securetty: No such file or directory Jun 15 06:48:48 Lynx-4 kernel: usb 3-3: reset full-speed USB device number 2 using xhci_hcd Jun 15 06:48:49 Lynx-4 upowerd[1195]: treating change event as add on /sys/devices/pci0000:00/0000:00:14.0/usb3/3-3 Jun 15 06:48:49 Lynx-4 upowerd[1195]: treating change event as add on /sys/devices/pci0000:00/0000:00:14.0/usb3/3-3 Jun 15 06:48:49 Lynx-4 fprintd[1496]: identify has failed: 114 Jun 15 06:48:49 Lynx-4 fprintd[1496]: Device reported an error during identify: Unexpected result from device 114 Jun 15 06:48:49 Lynx-4 gdm-session-worker[1987]: free(): double free detected in tcache 2 ** Attachment added: "a.log" https://bugs.launchpad.net/ubuntu/+source/gnome-shell/+bug/1932289/+attachment/5505242/+files/a.log -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to gnome-shell in Ubuntu. https://bugs.launchpad.net/bugs/1932289 Title: 'swipe finger' in login interface disappear and show up periodically To manage notifications about this bug go to: https://bugs.launchpad.net/oem-priority/+bug/1932289/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
