[Bug 1720331] Re: Whoopsie continually relaunching

[James Henstridge]

So I think I've got things sorted out by (a) switching to call
SetReportCrashes async to avoid blocking the UI, and (b) not calling
SetReportCrashes if we're asked to set it to the current (cached) value
of the property.

I've noticed that if whoopsie-preferences exits while the privacy panel
is open, I get a bit of a bounce when toggling the switch next.  This
seems to be due to whoopsie-preferences sending out a stray change
notification signal on start up:

    method call time=1507538340.672978 sender=:1.1499 -> destination=com.ubuntu.WhoopsiePreferences serial=30 path=/com/ubuntu/WhoopsiePreferences; interface=com.ubuntu.WhoopsiePreferences; member=SetReportCrashes
       boolean false
    signal time=1507538340.756225 sender=:1.1507 -> destination=(null destination) serial=9 path=/com/ubuntu/WhoopsiePreferences; interface=org.freedesktop.DBus.Properties; member=PropertiesChanged
       string "com.ubuntu.WhoopsiePreferences"
       array [
          dict entry(
             string "ReportMetrics"
             variant             boolean true
          )
          dict entry(
             string "ReportCrashes"
             variant             boolean true
          )
       ]
       array [
       ]
    method call time=1507538340.756590 sender=:1.1499 -> destination=:1.1507 serial=31 path=/com/ubuntu/WhoopsiePreferences; interface=org.freedesktop.DBus.Properties; member=GetAll
       string "com.ubuntu.WhoopsiePreferences"
    method call time=1507538340.757395 sender=:1.1499 -> destination=com.ubuntu.WhoopsiePreferences serial=32 path=/com/ubuntu/WhoopsiePreferences; interface=com.ubuntu.WhoopsiePreferences; member=SetReportCrashes
       boolean true
    signal time=1507538341.034321 sender=:1.1507 -> destination=(null destination) serial=14 path=/com/ubuntu/WhoopsiePreferences; interface=org.freedesktop.DBus.Properties; member=PropertiesChanged
       string "com.ubuntu.WhoopsiePreferences"
       array [
          dict entry(
             string "ReportCrashes"
             variant             boolean false
          )
       ]
       array [
       ]
    method call time=1507538341.035076 sender=:1.1499 -> destination=:1.1507 serial=33 path=/com/ubuntu/WhoopsiePreferences; interface=com.ubuntu.WhoopsiePreferences; member=SetReportCrashes
       boolean false

So essentially whoopsie-preferences is sending out an unsolicited
PropertiesChanged signal on startup with the initial values before
processing the SetReportCrashes method call.  Then gnome-control-center
responds by trying to match the switch state leading to the bounce.

So I guess I'll have to dive into the whoopsie-preferences code to see
if I can silence the stray signal.

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https://bugs.launchpad.net/bugs/1720331

Title:
  Whoopsie continually relaunching

Status in gnome-control-center package in Ubuntu:
  Triaged
Status in whoopsie package in Ubuntu:
  Invalid

Bug description:
  Today for the first time, and coincidentally looking for a different
  setting, I went to the Settings->Privacy dialogue. I was also
  (coincidentally for a different reason, relating to #1720149) already
  tailing /var/log/syslog to a terminal.

  Immediately on opening that dialogue, the syslog tail flooded with
  whoopsie continually relaunching, causing enough work to raise the fan
  speeds. This is a representative section from towards the end of me
  letting it, before I killed the service, with some necessary
  viciousness. Specifically

  systemctl stop whoopsie
  (didn't stop it)
  systemctl disable whoopsie
  (didn't stop it)
  (find pid for whoopsie's root process and kill it)
  (that stopped it)

  Also for good measure ensured the automatic bug reporting option in
  the privacy settings dialog was set to manual, which I think was done
  anyway when I disabled whoopsie, though the dialog wasn't on top at
  the time for me to be sure. It had been set to automatic when I first
  opened the dialog.

  Snippet from syslog attached. It was just repeating this continually
  for several minutes before I stopped it.

  ProblemType: Bug
  DistroRelease: Ubuntu 17.10
  Package: whoopsie 0.2.58
  ProcVersionSignature: Ubuntu 4.13.0-12.13-generic 4.13.3
  Uname: Linux 4.13.0-12-generic x86_64
  NonfreeKernelModules: nvidia_uvm nvidia_drm nvidia_modeset nvidia
  ApportVersion: 2.20.7-0ubuntu1
  Architecture: amd64
  CrashReports:
   664:1000:119:0:2017-09-25 18:16:58.760134901 +0100:2017-09-25 18:16:58.760134901 +0100:/var/crash/_opt_google_chrome_chrome.1000.upload
   640:1000:119:102847031:2017-09-27 20:28:45.352315425 +0100:2017-09-28 09:02:32.195212507 +0100:/var/crash/_usr_bin_gnome-shell.1000.crash
   640:1000:119:34020328:2017-09-25 18:16:57.656132936 +0100:2017-09-25 18:16:58.760134901 +0100:/var/crash/_opt_google_chrome_chrome.1000.crash
   600:111:119:0:2017-09-25 18:16:59.348145502 +0100:2017-09-25 18:16:59.348145502 +0100:/var/crash/_opt_google_chrome_chrome.1000.uploaded
  CurrentDesktop: GNOME
  Date: Fri Sep 29 10:00:34 2017
  InstallationDate: Installed on 2017-07-30 (60 days ago)
  InstallationMedia: Ubuntu-GNOME 17.04 "Zesty Zapus" - Release amd64 (20170412)
  RelatedPackageVersions: apport-noui N/A
  SourcePackage: whoopsie
  UpgradeStatus: Upgraded to artful on 2017-08-22 (37 days ago)

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