LinuxQuestions.org
Latest LQ Deal: Latest LQ Deals
Go Back   LinuxQuestions.org > Forums > Linux Forums > Linux - Networking
User Name
Password
Linux - Networking This forum is for any issue related to networks or networking.
Routing, network cards, OSI, etc. Anything is fair game.

Notices


Reply
  Search this Thread
Old 04-30-2015, 11:17 AM   #1
jackanory
LQ Newbie
 
Registered: Mar 2009
Posts: 12

Rep: Reputation: 0
Unhappy Losing Internet connection since upgrade to Ubuntu 15.04


Hi, hope someone out there can help. Since upgrading from Ubuntu 14.10 to 15.04 I keep losing my internet connection. I've attempted twice before to post this thread, but then lost connection before I could! Please help as I'm at my wit's end.

Here is the output from "sudo lshw -C network; lsb_release -a; uname -a; sudo rfkill list[sudo]"

*-network
description: Ethernet interface
product: AR8151 v2.0 Gigabit Ethernet
vendor: Qualcomm Atheros
physical id: 0
bus info: pci@0000:02:00.0
logical name: eth0
version: c0
serial: 14:da:e9:92:54:b9
capacity: 1Gbit/s
width: 64 bits
clock: 33MHz
capabilities: pm msi pciexpress vpd bus_master cap_list ethernet physical tp 10bt 10bt-fd 100bt 100bt-fd 1000bt-fd autonegotiation
configuration: autonegotiation=on broadcast=yes driver=atl1c driverversion=1.0.1.1-NAPI latency=0 link=no multicast=yes port=twisted pair
resources: irq:28 memory:feac0000-feafffff ioport:ec00(size=128)
*-network
description: Wireless interface
product: RT2561/RT61 802.11g PCI
vendor: Ralink corp.
physical id: 1
bus info: pci@0000:04:01.0
logical name: wlan0
version: 00
serial: 00:11:50:dd:e4:6f
width: 32 bits
clock: 33MHz
capabilities: pm bus_master cap_list ethernet physical wireless
configuration: broadcast=yes driver=rt61pci driverversion=3.19.0-15-generic firmware=0.8 ip=192.168.1.67 latency=64 link=yes multicast=yes wireless=IEEE 802.11bg
resources: irq:16 memory:febf8000-febfffff
No LSB modules are available.
Distributor ID: Ubuntu
Description: Ubuntu 15.04
Release: 15.04
Codename: vivid
Linux fhall01 3.19.0-15-generic #15-Ubuntu SMP Thu Apr 16 23:32:01 UTC 2015 i686 i686 i686 GNU/Linux
0: phy0: Wireless LAN
Soft blocked: no
Hard blocked: no
 
Old 04-30-2015, 12:08 PM   #2
rtmistler
Moderator
 
Registered: Mar 2011
Location: USA
Distribution: MINT Debian, Angstrom, SUSE, Ubuntu, Debian
Posts: 9,885
Blog Entries: 13

Rep: Reputation: 4931Reputation: 4931Reputation: 4931Reputation: 4931Reputation: 4931Reputation: 4931Reputation: 4931Reputation: 4931Reputation: 4931Reputation: 4931Reputation: 4931
Any records from the output of dmesg showing that connection going up and down?

Is this happening where the system sleeps or goes to power saving?
 
Old 04-30-2015, 12:18 PM   #3
jackanory
LQ Newbie
 
Registered: Mar 2009
Posts: 12

Original Poster
Rep: Reputation: 0
Hi, thanks for replying. I'm not sure if it's happening after on "suspend" although as I am on nights I put computer on suspend while I sleep and it's also suspended while 'm at work. I've always done this though and it has just started since the upgrade to 15.04. The connection is certainly "up and down", and this is also since the upgrade. In addition, firefox seems to be taking a lot longer to "power up" now too. Don't know if that's connected though. I seem to have the connection for perhaps 10-15 minutes at a time and then the only way to get it back is to re-boot! Even that doesn't always work, frustrating!! My laptop, phone, tablet, all connect no problem, so I know it's not the router/hub. ??
 
Old 04-30-2015, 12:25 PM   #4
rtmistler
Moderator
 
Registered: Mar 2011
Location: USA
Distribution: MINT Debian, Angstrom, SUSE, Ubuntu, Debian
Posts: 9,885
Blog Entries: 13

Rep: Reputation: 4931Reputation: 4931Reputation: 4931Reputation: 4931Reputation: 4931Reputation: 4931Reputation: 4931Reputation: 4931Reputation: 4931Reputation: 4931Reputation: 4931
I understand that the environment hasn't changed, nor has your use case; however the operating system has changed and it may be very likely when it suspends now and returns that it doesn't re-establish the network properly, or there's a setting for the network which can be adjusted to help with that. As we all know, they do love to tinker and none of us are happy that core behaviors change, or get bugs introduced all in the name of a grand new user experience.

This is also why I don't necessarily update for a few months. And my understanding is that the odd numbered Ubuntu releases are not LTS, hence they're supported for a year.

So it may be a modification to settings/behaviors, or it may be an actual bug.

I'd try to go further to characterize it. Determine if this ever happens when you're working, or only happens with sleep/wake scenarios.
 
Old 04-30-2015, 12:30 PM   #5
jackanory
LQ Newbie
 
Registered: Mar 2009
Posts: 12

Original Poster
Rep: Reputation: 0
Oh it happens when I'm working alright. I have had to re-boot more than once since I started with this thread. I have however, managed to maintain the connection somehow. I'll persevere, but if anyone else has a solution I'd appreciate the input. I'll not mark the thread as solved though, until it is. Thanks for your help..........I think?
 
Old 04-30-2015, 12:33 PM   #6
rtmistler
Moderator
 
Registered: Mar 2011
Location: USA
Distribution: MINT Debian, Angstrom, SUSE, Ubuntu, Debian
Posts: 9,885
Blog Entries: 13

Rep: Reputation: 4931Reputation: 4931Reputation: 4931Reputation: 4931Reputation: 4931Reputation: 4931Reputation: 4931Reputation: 4931Reputation: 4931Reputation: 4931Reputation: 4931
Like I say, check your system log. It may only tell you the network is going up/down or it may tell you more. Check your router, if it happens to be a personal network and enable some debug to determine if you can see what's going on.

Barring that I'd check Ubuntu's forums to see if these are known issues that someone else has complained about.
 
Old 04-30-2015, 01:00 PM   #7
Ihatewindows522
Member
 
Registered: Oct 2014
Location: Fort Wayne
Distribution: Ubuntu 16.04 LTS
Posts: 616
Blog Entries: 2

Rep: Reputation: 166Reputation: 166
Does this happen only on this machine, or does it happen on others as well? It could be a bug in the kernel (or really anywhere down the line), look on Launchpad and see if anyone has reported it as a bug.

It also could be the driver supplied by Ralink. I've had soso success with those. Using an Intel card on my box, and even though Intel isn't known for their high quality network or RAID controllers, it's played fairly nice with all major distros.
 
Old 05-01-2015, 03:05 AM   #8
jackanory
LQ Newbie
 
Registered: Mar 2009
Posts: 12

Original Poster
Rep: Reputation: 0
Quote:
Originally Posted by Ihatewindows522 View Post
Does this happen only on this machine, or does it happen on others as well? It could be a bug in the kernel (or really anywhere down the line), look on Launchpad and see if anyone has reported it as a bug.

It also could be the driver supplied by Ralink. I've had soso success with those. Using an Intel card on my box, and even though Intel isn't known for their high quality network or RAID controllers, it's played fairly nice with all major distros.
Yes it only happens on this machine, but this is the only machine I have with Ubuntu 15.04 upgrade. I have a laptop with windoze, and an Ubuntu Phone, (not 15.04 as far as I know) and an android tablet, they all connect fine which is why it is not a router/hub problem. I wouldn't know how to change the Ralink driver anyhow, but thanks.....
 
Old 05-11-2015, 04:00 PM   #9
freecode
LQ Newbie
 
Registered: May 2015
Location: Austin, TX
Distribution: Ubuntu
Posts: 5

Rep: Reputation: Disabled
I've been experiencing this as well since upgrading to 15.04. Suspend mode loses connections (it was working until a kernel upgrade) and then the connection will not return sometimes at all. Going to be checking dmesg when I get home, to see if the problem has persisted there again. Using a Mac at work, as that is what I was given here (and it works fine on the net @ home. Don't think this is a router issue, more like a Vivid Vervet issue. Can't report the bug through apport as the network is down when it occurs. :P
 
  


Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is Off
HTML code is Off



Similar Threads
Thread Thread Starter Forum Replies Last Post
[SOLVED] Ubuntu 12.04 upgrade. can connect to Wifi but no internet connection Samnoob Linux - Newbie 1 07-12-2012 09:34 AM
LXer: How To Upgrade To Ubuntu 11.04 Natty Narwhal (With Or Without An Internet Connection) LXer Syndicated Linux News 0 04-28-2011 05:50 PM
Keep losing internet connection londy Linux - Networking 5 02-26-2009 10:10 PM
losing Internet connection atomicrm Linux - Networking 4 02-13-2009 12:42 PM
Losing internet connection jimcpl Linux - Wireless Networking 2 10-10-2007 07:06 AM

LinuxQuestions.org > Forums > Linux Forums > Linux - Networking

All times are GMT -5. The time now is 01:48 PM.

Main Menu
Advertisement
My LQ
Write for LQ
LinuxQuestions.org is looking for people interested in writing Editorials, Articles, Reviews, and more. If you'd like to contribute content, let us know.
Main Menu
Syndicate
RSS1  Latest Threads
RSS1  LQ News
Twitter: @linuxquestions
Open Source Consulting | Domain Registration