Here is, in attachment, the backtrace as asked. And here is the result of 'journalctl -b 0' :
-- Logs begin at Mon 2020-05-11 18:06:04 CEST, end at Wed 2020-05-13 10:44:17 CEST. -- mai 13 10:28:08 HP-ENVY-Notebook kernel: microcode: microcode updated early to revision 0xd6, date = 2019-10-03 mai 13 10:28:08 HP-ENVY-Notebook kernel: Linux version 5.4.0-29-generic (buildd@lgw01-amd64-035) (gcc version 9.3.0 (Ubuntu 9.3.0-10ubuntu2)) #33-Ubuntu SMP Wed Apr 29 14:32:2> mai 13 10:28:08 HP-ENVY-Notebook kernel: Command line: BOOT_IMAGE=/boot/vmlinuz-5.4.0-29-generic root=UUID=8b04a58c-b577-4888-aa18-76aa7e8b564e ro quiet splash vt.handoff=7 mai 13 10:28:08 HP-ENVY-Notebook kernel: KERNEL supported cpus: mai 13 10:28:08 HP-ENVY-Notebook kernel: Intel GenuineIntel mai 13 10:28:08 HP-ENVY-Notebook kernel: AMD AuthenticAMD mai 13 10:28:08 HP-ENVY-Notebook kernel: Hygon HygonGenuine mai 13 10:28:08 HP-ENVY-Notebook kernel: Centaur CentaurHauls mai 13 10:28:08 HP-ENVY-Notebook kernel: zhaoxin Shanghai mai 13 10:28:08 HP-ENVY-Notebook kernel: x86/fpu: Supporting XSAVE feature 0x001: 'x87 floating point registers' mai 13 10:28:08 HP-ENVY-Notebook kernel: x86/fpu: Supporting XSAVE feature 0x002: 'SSE registers' mai 13 10:28:08 HP-ENVY-Notebook kernel: x86/fpu: Supporting XSAVE feature 0x004: 'AVX registers' mai 13 10:28:08 HP-ENVY-Notebook kernel: x86/fpu: Supporting XSAVE feature 0x008: 'MPX bounds registers' mai 13 10:28:08 HP-ENVY-Notebook kernel: x86/fpu: Supporting XSAVE feature 0x010: 'MPX CSR' mai 13 10:28:08 HP-ENVY-Notebook kernel: x86/fpu: xstate_offset[2]: 576, xstate_sizes[2]: 256 mai 13 10:28:08 HP-ENVY-Notebook kernel: x86/fpu: xstate_offset[3]: 832, xstate_sizes[3]: 64 mai 13 10:28:08 HP-ENVY-Notebook kernel: x86/fpu: xstate_offset[4]: 896, xstate_sizes[4]: 64 mai 13 10:28:08 HP-ENVY-Notebook kernel: x86/fpu: Enabled xstate features 0x1f, context size is 960 bytes, using 'compacted' format. mai 13 10:28:08 HP-ENVY-Notebook kernel: BIOS-provided physical RAM map: mai 13 10:28:08 HP-ENVY-Notebook kernel: BIOS-e820: [mem 0x0000000000000000-0x0000000000057fff] usable mai 13 10:28:08 HP-ENVY-Notebook kernel: BIOS-e820: [mem 0x0000000000058000-0x0000000000058fff] reserved mai 13 10:28:08 HP-ENVY-Notebook kernel: BIOS-e820: [mem 0x0000000000059000-0x0000000000085fff] usable ** Attachment added: "gdb-gnome-control-center.txt" https://bugs.launchpad.net/ubuntu/+source/gnome-control-center/+bug/1878285/+attachment/5370818/+files/gdb-gnome-control-center.txt -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to gnome-control-center in Ubuntu. https://bugs.launchpad.net/bugs/1878285 Title: gnome-control-center crashes on setting up fingerprint Status in gnome-control-center package in Ubuntu: Incomplete Bug description: When I try to setup my fingerprint in gnome-control-center, I first have to choose which finger I would use, and when I press the "next" button, it crashes : "Unable to access device "Validity VFS0050" GDBus.Error:org.freedesktop.DBus.Error.NoReply:Message recipient disconnected from message bus without replying". For information, my fingerprint sensor is : - lsusb Bus 001 Device 005: ID 138a:0050 Validity Sensors, Inc. Swipe Fingerprint Sensor Ubuntu 20.04 gnome-control-center: Installé : 1:3.36.1-1ubuntu5 Candidat : 1:3.36.1-1ubuntu5 Table de version : *** 1:3.36.1-1ubuntu5 500 500 http://be.archive.ubuntu.com/ubuntu focal/main amd64 Packages 100 /var/lib/dpkg/status What I expected to happen, is that everything works and that I can set up my finger for unlocking. What happened instead : it crashes with the information "Unable to access device "Validity VFS0050" GDBus.Error:org.freedesktop.DBus.Error.NoReply:Message recipient disconnected from message bus without replying". ProblemType: Bug DistroRelease: Ubuntu 20.04 Package: gnome-control-center 1:3.36.1-1ubuntu5 ProcVersionSignature: Ubuntu 5.4.0-29.33-generic 5.4.30 Uname: Linux 5.4.0-29-generic x86_64 NonfreeKernelModules: nvidia_modeset nvidia wl ApportVersion: 2.20.11-0ubuntu27 Architecture: amd64 CasperMD5CheckResult: skip CurrentDesktop: ubuntu:GNOME Date: Tue May 12 22:00:30 2020 InstallationDate: Installed on 2020-05-11 (1 days ago) InstallationMedia: Ubuntu 20.04 LTS "Focal Fossa" - Release amd64 (20200423) ProcEnviron: LANGUAGE=fr_BE:fr PATH=(custom, no user) XDG_RUNTIME_DIR=<set> LANG=fr_BE.UTF-8 SHELL=/bin/bash SourcePackage: gnome-control-center UpgradeStatus: No upgrade log present (probably fresh install) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-control-center/+bug/1878285/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
