ADSL connection dropping when using Deluge or Transmission

[Adam Niedling]

Binary package hint: network-manager

I'm using Intrepid and I have intel 3945ABG. After upgrading to network-manager 0.7 my internet connection is dropping when I'm using Deluge or Transmission torrent clients. This is happening every 10-30 minutes to my ADSL connection.

I have network-manager: 0.7~~svn20081018t105859-0ubuntu1.8.10.2

Network manager does not reconnect to the internet even though I have the connect automatically option ticked.

I get several messages in my system log viewer, I'm attaching those ones that I get when my connection gets dropped.

[Adam Niedling (krychek)]

After deleting /etc/network/interfaces, network-manager actually can manage networks. Unfortunately I can't test if this issue is still happening. I'll update this bug when I have the chance to test it.

[Adam Niedling (krychek)]

No disconnecting on my wifi connection after deleting /etc/network/interfaces. Need more testing.

[Alexander Sack (asac)]

seems to be incomplete for quite some time.

[Adam Niedling (krychek)]

This is still happening.

[Adam Niedling (krychek)]

I still have this issue with updated Jaunty. ADSL connection is dropping when downloading with Deluge and Ubuntu does not reconnect. I'm attaching the syslog.

Network manager: 0.7.1~rc4.1.cf199a964-0ubuntu2

[Adam Niedling (krychek)]

I meant that Ubuntu does not reconnect automatically. It reconnects fine when I do it manually with the network manager applet.

[Marius Vasilescu (vegancorr)]

I'm having the same problem, my ADSL connection drops when uploading at full speed over pppoe (including torrents). Downloading works fine and the connection never drops, while on Windows both downloading / uploading work fine. The difference I've noticed between Windows & Ubuntu 9.04 was the upload speed. While on Windows was about 1.5MB/s, on Ubuntu it was about 4-5 MB/s (till the connection dropped, at most 2-3 minutes).

I've tried changing MTU & MRU from 1492 to 1400 for ppp0, disabling multicast for ppp0 & eth0 - the issue still occured. After many hours, I found quite a strange solution, since eth0 has auto-negotiation and it seems to work well (it finds a 100Mb/s full-duplex connection). However, this solved the issue: "sudo ethtool -s eth0 autoneg off speed 100 duplex full". So, "ethtool eth0" shows me the same configuration when using autoneg on / off, but when it's off the upload speed is limited to about 1.5MB/s as in Windows and it doesn't disconnect.

On the other issue, my Network Manager reconnects itself, but you have to check if the ADSL connection has the auto-reconnect checkbox checked. I have two connections, the dhcp which is not checked to reconnect and the ADSL one which is checked. Look in the configuration files: "/etc/NetworkManager/system-connections/*" for "autoconnect=true"

[Alexander Sack (asac)]

this is a valid feature request. e.g. auto reconnect for ppp connections. there should be an upstream bug already.

[Shiba (shiba89)]

No, I believe the real problem is not auto reconnect. Have a look at this, it might be useful. http://ubuntuforums.org/showthread.php?p=7855272

[Adam Niedling (krychek)]

Thanks for the input Shiba. Looks like already 3 people have this issue. I just reproduced it with an up-to-date Jaunty.
Please change back the wishlist status to something else as this seems to be a bug actually!
The fact that it doesn't reconnect automatically is just the cream on the top.

[Shiba (shiba89)]

Why is this bug still labeled "Wishlist"? :(

[Biji (biji)]

had this issue too in karmic. This happened when traffic full such as bittorrent download. but when using modem's pppoe it never disconnect even traffic full. so it would be good if unchecking Send Echo Reply in network manager would remove lcp-echo-failure

log:
No response to 3 echo-requests
Serial link appears to be disconnected.
Connect time 29.7 minutes.

i hope this give some pointer to developer.

[Marius Vasilescu (vegancorr)]

I still have the issue in karmic too. I managed to "solve" the problem by using router :/

[everflux (tklaunchpad)]

I have the problem with karmic as well.
The machine connecting to the internet is not using network manager, but static configuration from /etc/network/interfaces

# The primary network interface
auto eth0
iface eth0 inet static
 address 10.15.0.1
 netmask 255.255.255.0
 network 10.15.0.0
 broadcast 10.15.0.255
#dsl-provider
iface dsl-provider inet ppp
pre-up /sbin/ifconfig eth0 up # line maintained by pppoeconf
provider dsl-provider

When upload on ppp0 reaches the ADSL limit, the server itself is no longer pingable (or high latency) on eth0. I can happily transfer at 100mbit in the internal network as long as ppp0 is not saturated, though.
The only relationship between ppp0 and eth0 is that eth0 is used to reach the ADSL modem.

[everflux (tklaunchpad)]

Last comment was not karmic, but maverick: Ubuntu 10.10 on 32bit Intel

[Adam Niedling (krychek)]

I can't test this problem anymore because i don't have ADSL connection anymore and I'm connected to the internet via a router.
There is no disconnection like this anymore.
If you still have this problem I suggest you open a new bug report!