apport information

** Attachment added: "GsettingsGnomeLockdown.txt"
   
https://bugs.launchpad.net/bugs/1880793/+attachment/5377645/+files/GsettingsGnomeLockdown.txt

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https://bugs.launchpad.net/bugs/1880793

Title:
  When I do any screen lock action the screen flickers (and lock fails)

Status in gnome-screensaver package in Ubuntu:
  New

Bug description:
  When I look at dmesg it appears that screen lock is causing a
  segfault:

  [  595.735328] Lockdown: systemd-logind: hibernation is restricted; see man 
kernel_lockdown.7
  [  597.651594] gnome-shell[7692]: segfault at 1195 ip 00007f94d6bcee41 sp 
00007fffe593b4f8 error 4 in libc-2.31.so[7f94d6a6d000+178000]
  [  597.651601] Code: 01 0f 84 e2 03 00 00 0f 82 cc 03 00 00 49 89 d3 89 f8 31 
d2 c5 c5 ef ff 09 f0 25 ff 0f 00 00 3d 80 0f 00 00 0f 8f ef 03 00 00 <c5> fe 6f 
0f c5 f5 74 06 c5 fd da c1 c5 fd 74 c7 c5 fd d7 c8 85 c9
  [  599.073507] Lockdown: systemd-logind: hibernation is restricted; see man 
kernel_lockdown.7

  ProblemType: Bug
  DistroRelease: Ubuntu 20.04
  Package: gnome-screensaver (not installed)
  ProcVersionSignature: Ubuntu 5.4.0-31.35-generic 5.4.34
  Uname: Linux 5.4.0-31-generic x86_64
  NonfreeKernelModules: zfs zunicode zavl icp zcommon znvpair nvidia_modeset 
nvidia
  ApportVersion: 2.20.11-0ubuntu27
  Architecture: amd64
  CasperMD5CheckResult: skip
  CurrentDesktop: ubuntu:GNOME
  Date: Tue May 26 19:45:14 2020
  InstallationDate: Installed on 2019-11-25 (183 days ago)
  InstallationMedia: Ubuntu 19.10 "Eoan Ermine" - Release amd64 (20191017)
  SourcePackage: gnome-screensaver
  UpgradeStatus: No upgrade log present (probably fresh install)
  --- 
  ProblemType: Bug
  ApportVersion: 2.20.11-0ubuntu27
  Architecture: amd64
  CasperMD5CheckResult: skip
  CurrentDesktop: ubuntu:GNOME
  DistroRelease: Ubuntu 20.04
  GnomeSessionIdleInhibited: No
  GnomeSessionInhibitors: None
  GsettingsGnomeSession:
   org.gnome.desktop.session session-name 'ubuntu'
   org.gnome.desktop.session idle-delay uint32 0
  InstallationDate: Installed on 2019-11-25 (184 days ago)
  InstallationMedia: Ubuntu 19.10 "Eoan Ermine" - Release amd64 (20191017)
  NonfreeKernelModules: zfs zunicode zavl icp zcommon znvpair nvidia_modeset 
nvidia
  Package: gnome-screensaver 3.6.1-11ubuntu4
  PackageArchitecture: amd64
  ProcVersionSignature: Ubuntu 5.4.0-33.37-generic 5.4.34
  Tags:  focal
  Uname: Linux 5.4.0-33-generic x86_64
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups: adm cdrom dip docker lpadmin lxd plugdev sambashare sudo
  _MarkForUpload: True

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