[Bug 1879087] Re: dbus errors, frequent roaming and unstable connectivity

[Steve Langasek]

> the roaming events should not be too frequent

That's not an objective test case.  Please provide a clear test case
that anyone should be able to follow to determine whether this bug has
been fixed.

** Description changed:

  * Impact
  extra roaming events are been generated
  
  * Test case
- check the wpa_supplicant log, it should have warnings
+ check the output of `journalctl -lu wpa_supplicant`, it should have warnings
  dbus: wpa_dbus_property_changed: no property RoamComplete in object /fi/w1/wpa_supplicant1/Interfaces/3
  
  the roaming events should not be too frequent
  
  * Regression potential
  check that wifi connection keep working correctly
- 
  
  --------------
  
  When using this version of wpa_supplicant with my company
  WPA2-Enterprise wireless setup, I'm experiencing far too frequent
  roaming events (even when not moving around) accompanied by hiccups in
  connectivity. I also see these messages in the wpa_supplicant log:
  
  dbus: wpa_dbus_property_changed: no property RoamComplete in object /fi/w1/wpa_supplicant1/Interfaces/3
  dbus: wpa_dbus_property_changed: no property RoamTime in object /fi/w1/wpa_supplicant1/Interfaces/3
  dbus: wpa_dbus_property_changed: no property SessionLength in object /fi/w1/wpa_supplicant1/Interfaces/3
  
  Having done a little research, at least the dbus errors seem to be fixed
  by this commit upstream:
  
  https://w1.fi/cgit/hostap/commit/wpa_supplicant/dbus/dbus_new.c?id=23d87687c2428f3b94865580b0d33e05c03e6756
  
  So I built a version of wpa_supplicant including this particular patch
  and installed on my machine. Apart from solving the dbus errors
  completely, it seems to have had a positive impact on the frequent
  roaming and unstable connectivity as well (I've run for a day with no
  burst of roaming events at all, where they used to happen every few
  minutes most of the time.)
  
  ProblemType: Bug
  DistroRelease: Ubuntu 20.04
  Package: wpasupplicant 2:2.9-1ubuntu4
  ProcVersionSignature: Ubuntu 5.4.0-31.35-generic 5.4.34
  Uname: Linux 5.4.0-31-generic x86_64
  ApportVersion: 2.20.11-0ubuntu27
  Architecture: amd64
  CasperMD5CheckResult: skip
  CurrentDesktop: GNOME
  Date: Sat May 16 16:47:27 2020
  InstallationDate: Installed on 2020-05-12 (4 days ago)
  InstallationMedia: Ubuntu 20.04 LTS "Focal Fossa" - Release amd64 (20200423)
  SourcePackage: wpa
  UpgradeStatus: No upgrade log present (probably fresh install)

** Also affects: wpa (Ubuntu Focal)
   Importance: Undecided
       Status: New

** Changed in: wpa (Ubuntu Focal)
       Status: New => Incomplete

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https://bugs.launchpad.net/bugs/1879087

Title:
  dbus errors, frequent roaming and unstable connectivity

Status in wpa package in Ubuntu:
  Fix Committed
Status in wpa source package in Focal:
  Incomplete

Bug description:
  * Impact
  extra roaming events are been generated

  * Test case
  check the output of `journalctl -lu wpa_supplicant`, it should have warnings
  dbus: wpa_dbus_property_changed: no property RoamComplete in object /fi/w1/wpa_supplicant1/Interfaces/3

  the roaming events should not be too frequent

  * Regression potential
  check that wifi connection keep working correctly

  --------------

  When using this version of wpa_supplicant with my company
  WPA2-Enterprise wireless setup, I'm experiencing far too frequent
  roaming events (even when not moving around) accompanied by hiccups in
  connectivity. I also see these messages in the wpa_supplicant log:

  dbus: wpa_dbus_property_changed: no property RoamComplete in object /fi/w1/wpa_supplicant1/Interfaces/3
  dbus: wpa_dbus_property_changed: no property RoamTime in object /fi/w1/wpa_supplicant1/Interfaces/3
  dbus: wpa_dbus_property_changed: no property SessionLength in object /fi/w1/wpa_supplicant1/Interfaces/3

  Having done a little research, at least the dbus errors seem to be
  fixed by this commit upstream:

  https://w1.fi/cgit/hostap/commit/wpa_supplicant/dbus/dbus_new.c?id=23d87687c2428f3b94865580b0d33e05c03e6756

  So I built a version of wpa_supplicant including this particular patch
  and installed on my machine. Apart from solving the dbus errors
  completely, it seems to have had a positive impact on the frequent
  roaming and unstable connectivity as well (I've run for a day with no
  burst of roaming events at all, where they used to happen every few
  minutes most of the time.)

  ProblemType: Bug
  DistroRelease: Ubuntu 20.04
  Package: wpasupplicant 2:2.9-1ubuntu4
  ProcVersionSignature: Ubuntu 5.4.0-31.35-generic 5.4.34
  Uname: Linux 5.4.0-31-generic x86_64
  ApportVersion: 2.20.11-0ubuntu27
  Architecture: amd64
  CasperMD5CheckResult: skip
  CurrentDesktop: GNOME
  Date: Sat May 16 16:47:27 2020
  InstallationDate: Installed on 2020-05-12 (4 days ago)
  InstallationMedia: Ubuntu 20.04 LTS "Focal Fossa" - Release amd64 (20200423)
  SourcePackage: wpa
  UpgradeStatus: No upgrade log present (probably fresh install)

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