Arch Linux

beretta

Member

Registered: 2008-04-21

Posts: 133

Network drops randomly

I've got a strange network problem that appeared a few days ago, possibly with a recent kernel update?

I'm connected through a lan to a router using dhcp, and the network connection drops out randomly, seemingly regardless of network traffic.  dmesg shows this set of error messages:

e1000e 0000:00:19.0: irq 31 for MSI/MSI-X
e1000e 0000:00:19.0: irq 31 for MSI/MSI-X
e1000e: eth0 NIC Link is Up 100 Mbps Full Duplex, Flow Control: None
0000:00:19.0: eth0: 10/100 speed: disabling TSO
NET: Registered protocol family 10
lo: Disabled Privacy Extensions
IRQ 16/nvidia: IRQF_DISABLED is not guaranteed on shared IRQs
eth0: no IPv6 routers present
e1000e: eth0 NIC Link is Down
e1000e: eth0 NIC Link is Up 100 Mbps Full Duplex, Flow Control: None
0000:00:19.0: eth0: 10/100 speed: disabling TSO
e1000e: eth0 NIC Link is Down
e1000e: eth0 NIC Link is Up 100 Mbps Full Duplex, Flow Control: None
0000:00:19.0: eth0: 10/100 speed: disabling TSO
e1000e: eth0 NIC Link is Down

etc...

The network is usually only down for 30 seconds or so, then comes back up on its own.  Other computers connected wirelessly seem to have no problems at all, nor do I have the problem when I'm booted into windows on the hardline.

I'm not too familiar yet with network problems, so I'm not sure what all would be useful to see.  If there's a particular configuration you want to see, let me know.

Last edited by beretta (2009-08-14 16:42:53)

beretta

Member

Registered: 2008-04-21

Posts: 133

Re: Network drops randomly

I've managed to at least trace the source of the problem:  I only get network drops if I have transmission running.  Has anyone else seen this?

R00KIE

Forum Fellow

From: Between a computer and a chair

Registered: 2008-09-14

Posts: 4,734

Re: Network drops randomly

I've seen something similar happen, I was using ubuntu 7.10 x86_64 and connected via wireless using ndiswrapper and a windows driver (there were no good drivers for broadcom cards yet).

When using deluge I could cause my computer to crash by increasing the maximum number of half-open connections, "normal" usage would not cause any problems, maybe your problem is similar, try lowering the maximum number of half-open connections, maximum connections and connections attempts per second and check if it still happens.

If changing that solves the problem then most likely that is a driver bug.

---

R00KIE
Tm90aGluZyB0byBzZWUgaGVyZSwgbW92ZSBhbG9uZy4K

beretta

Member

Registered: 2008-04-21

Posts: 133

Re: Network drops randomly

Well, fiddling with the settings in transmission didn't seem to help much.  I've downgraded, and now the problem has ceased to exist.  Guess I'll wait for a different update before upgrading.

beretta

Member

Registered: 2008-04-21

Posts: 133

Re: Network drops randomly

I noticed there had been an update on transmission, so I thought I'd try out the newer version.  I get the same problem.  I did feel, also, that the newer version was downloading faster, when the network was up.  Does anyone have an idea what I could look at to try and trace the source of the problem?

cit30

Member

Registered: 2009-08-19

Posts: 24

Re: Network drops randomly

I have the same problem when running deluge.