This bug was fixed in the package gnome-control-center -
1:3.36.4-0ubuntu2

---------------
gnome-control-center (1:3.36.4-0ubuntu2) focal; urgency=medium

  * debian/patches/git_useraccount_segfault.patch:
    - don't segfault trying to get the user initials when accountsservice
      is not responding (lp: #1873378)
  * debian/patches/git_row_collide.patch:
    - backport a fix for items of the connection details colliding
      (lp: #1873184)

  [ Hui Wang ]
  * d/p/0033-sound-update-the-profile-list-after-getting-the-sign.patch
    - signal to update profile combo list after the PA changes the
      active profile, this patch fixes the empty profile combo list issue
      after selecting the hdmi/dp audio in the g-c-c. (LP: #1896919)

  [ Marco Trevisan (Treviño) ]
  * d/p/0008-Allow-tweaking-some-settings-for-Ubuntu-Dock.patch:
    - Don't try to fetch monitors if the config manager is not ready yet
    (lp: #1887731)
  * d/p/0019-display-Support-UI-scaled-logical-monitor-mode.patch,
    d/p/0024-display-Allow-fractional-scaling-to-be-enabled.patch:
    - Don't disable fractional scaling immediately on integer changes
    (lp: #1887707)

 -- Sebastien Bacher <[email protected]>  Thu, 24 Sep 2020 17:03:01
+0200

** Changed in: gnome-control-center (Ubuntu Focal)
       Status: Fix Committed => Fix Released

-- 
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https://bugs.launchpad.net/bugs/1873378

Title:
  gnome-control-center crashed with SIGSEGV in _g_utf8_normalize_wc()

Status in gnome-control-center:
  Unknown
Status in gnome-control-center package in Ubuntu:
  Fix Released
Status in gnome-control-center source package in Focal:
  Fix Released

Bug description:
  * Impact

  The user panel hits a segfault sometimes

  * Test case

  Check that reports stop on 
  https://errors.ubuntu.com/problem/af55dc0f4cb3abb5f2c5632d1195450e44db98ca

  * Regression potential

  The change is in the user panel's user initial avatar generation,
  check that the default image for profiles without an avatar is still
  generated

  ---

  Description:  Ubuntu Focal Fossa (development branch)
  Release:      20.04

  Package version: 1:3.36.1-1ubuntu4

  The application was running in the background, with only Chrome running at 
the same time.
  It's a mid-2014 MacBook Pro, so some drivers are not very stable and can 
cause this kind of issues.

  ProblemType: Crash
  DistroRelease: Ubuntu 20.04
  Package: gnome-control-center 1:3.36.1-1ubuntu4
  ProcVersionSignature: Ubuntu 5.4.0-21.25-generic 5.4.27
  Uname: Linux 5.4.0-21-generic x86_64
  NonfreeKernelModules: wl
  ApportVersion: 2.20.11-0ubuntu26
  Architecture: amd64
  CasperMD5CheckResult: skip
  CurrentDesktop: ubuntu:GNOME
  Date: Thu Apr 16 23:41:09 2020
  ExecutablePath: /usr/bin/gnome-control-center
  InstallationDate: Installed on 2019-08-10 (250 days ago)
  InstallationMedia: Ubuntu 19.04 "Disco Dingo" - Release amd64 (20190416)
  ProcCmdline: gnome-control-center
  SegvAnalysis:
   Segfault happened at: 0x7f303176e6e4:        movzbl (%r14),%r15d
   PC (0x7f303176e6e4) ok
   source "(%r14)" (0x00000000) not located in a known VMA region (needed 
readable region)!
   destination "%r15d" ok
  SegvReason: reading NULL VMA
  Signal: 11
  SourcePackage: gnome-control-center
  StacktraceTop:
   ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
   g_utf8_normalize () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
   generate_default_avatar ()
   ?? ()
   ?? ()
  Title: gnome-control-center crashed with SIGSEGV in g_utf8_normalize()
  UpgradeStatus: Upgraded to focal on 2020-04-09 (7 days ago)
  UserGroups: adm cdrom dip docker input lpadmin plugdev sambashare sudo
  separator:

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