Ubuntu 16.04 has Networking problems

[Stephen Rynas]

Since upgrading to Ubuntu 16.04 from Ubuntu 15.10, Ubuntu 16.04 does not properly "see" the home network (LAN). Additionally, my printer which is also attached to the LAN does not work correctly.

These are erratic issues, meaning that they don't appear all the time. Further, no crash reports are generated either.

To explain further. The computer running 16.04 will frequently NOT show up on the "network" screen. When I go over to the computer running Ubuntu 14.04 it also does not show the computer running 16.04 as being on the LAN.

In terms of printing, the printer queue shows the print job as "held". When you try to release the print job it asks if the printer is connected and then goes back to "holding" the print job.

These actions seem to imply that networking is not working correctly with Ubuntu 16.04.

Please see the comment by Jerrylamos here:
http://discourse.ubuntu.com/t/ubuntu-16-04-does-not-display-network-frequently/2768/2?u=ascolais

ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: ubuntu-release-upgrader-core 1:16.04.14
ProcVersionSignature: Ubuntu 4.4.0-22.40-generic 4.4.8
Uname: Linux 4.4.0-22-generic x86_64
ApportVersion: 2.20.1-0ubuntu2.1
Architecture: amd64
CrashDB: ubuntu
CurrentDesktop: Unity
Date: Tue Jun 7 08:41:00 2016
InstallationDate: Installed on 2016-04-13 (54 days ago)
InstallationMedia: Ubuntu 15.10 "Wily Werewolf" - Release amd64 (20151021)
PackageArchitecture: all
SourcePackage: ubuntu-release-upgrader
Symptom: dist-upgrade
UpgradeStatus: Upgraded to xenial on 2016-04-23 (44 days ago)
VarLogDistupgradeTermlog:

[Stephen Rynas (ascolais)]

Since my original post, I have been poking at the issue. I noticed that in Ubuntu 16.04 that IPv6 was enabled, on my computer. On my Ubuntu 14.04, IPv6 was set to "ignored". So I also set IPv6 to "ignored" on the Ubuntu 16.04. As of yet, I have [B][U]not[/U][/B] noticed any improvement. Time will tell.

Otherwise, I have noticed that under "My Windows Network", that the Ubuntu 16.04 computer does not show-up. This seems to imply that there may be an issue with SMB (Samba).

[Stephen Rynas (ascolais)]

No improvement noticed after numerous reboots. Please not, this issue is erratic. It does not appear all the time nor does it generate an error message. Obviously that type of problem is difficult to diagnose. Also it does not seem that others are having a problem either.

[Stephen Rynas (ascolais)]

Solved? This issue may be resolved. On June 17, 2016 Ubuntu issued an update to "**files**". I have rebooted numerous times and the network configuration icons displayed correctly. Again, only time will tell if the issue is truly solved.

[Stephen Rynas (ascolais)]

Nope, the "bug", if it is a "bug" is still there. Issue is still erratic, meaning that it is occasional. If it does not go away, I will do a "fresh" install of 16.04 after the next release.

[Stephen Rynas (ascolais)]

Issue Still persists, despite the updates.
I will do a totally "fresh" install of 16.04.1 in the near future.

I have installed ("fresh") 16.04 on another computer and it does not have this networking problem. Furthermore, the lack of others reporting/having this problem points to it being specific to my one computer.

Thanks for responding.

[Stephen Rynas (ascolais)]

Did a "fresh" install of 16.04 a couple of days ago. Network discovery is acting better.
Furthermore, the lack of others reporting/having this problem points to this issue being specific to my one computer. I guess this bug report can be closed.

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Alberto Salvia Novella (es20490446e)]

If you are still experiencing this bug, please set status back to "confirmed".

[Stephen Rynas (ascolais)]

The bug appears to be resolved. I am not currently experiencing any issues. I have changed the status to "confirmed", but it does not seem appropriate from the perspective that I am not an Independent third party to validate this but. Anyway, the issue appears to be resolved.