Intermittent network connection

I have a strange problem in which I lose my network connection from time to time. It simply drops without any warning, I am running openSUSE 12.2. Is there any know bugs that could cause this?

On 01/02/2013 07:06 AM, joescott4t wrote:
>
> I have a strange problem in which I lose my network connection from time
> to time. It simply drops without any warning, I am running openSUSE
> 12.2. Is there any know bugs that could cause this?

Sure, there are lots of bugs. Do any of them affect your setup? Who knows with
the very limited information you provided. For instance, is the network wired or
wireless? What network hardware as shown by ‘/sbin/lspci -nn’, or ‘lsusb’? What
are you doing when it drops? Do you have an IPv6 problem with your ISP? What do
you have to do to get it back?

I am running on a wired setup.

Here is the output from lspci:

# lspci -nn
00:00.0 Host bridge [0600]: Intel Corporation 82X38/X48 Express DRAM Controller [8086:29e0]
00:01.0 PCI bridge [0604]: Intel Corporation 82X38/X48 Express Host-Primary PCI Express Bridge [8086:29e1]
00:1a.0 USB controller [0c03]: Intel Corporation 82801I (ICH9 Family) USB UHCI Controller #4 [8086:2937] (rev 02)
00:1a.1 USB controller [0c03]: Intel Corporation 82801I (ICH9 Family) USB UHCI Controller #5 [8086:2938] (rev 02)
00:1a.2 USB controller [0c03]: Intel Corporation 82801I (ICH9 Family) USB UHCI Controller #6 [8086:2939] (rev 02)
00:1a.7 USB controller [0c03]: Intel Corporation 82801I (ICH9 Family) USB2 EHCI Controller #2 [8086:293c] (rev 02)
00:1b.0 Audio device [0403]: Intel Corporation 82801I (ICH9 Family) HD Audio Controller [8086:293e] (rev 02)
00:1c.0 PCI bridge [0604]: Intel Corporation 82801I (ICH9 Family) PCI Express Port 1 [8086:2940] (rev 02)
00:1c.4 PCI bridge [0604]: Intel Corporation 82801I (ICH9 Family) PCI Express Port 5 [8086:2948] (rev 02)
00:1c.5 PCI bridge [0604]: Intel Corporation 82801I (ICH9 Family) PCI Express Port 6 [8086:294a] (rev 02)
00:1d.0 USB controller [0c03]: Intel Corporation 82801I (ICH9 Family) USB UHCI Controller #1 [8086:2934] (rev 02)
00:1d.1 USB controller [0c03]: Intel Corporation 82801I (ICH9 Family) USB UHCI Controller #2 [8086:2935] (rev 02)
00:1d.2 USB controller [0c03]: Intel Corporation 82801I (ICH9 Family) USB UHCI Controller #3 [8086:2936] (rev 02)
00:1d.7 USB controller [0c03]: Intel Corporation 82801I (ICH9 Family) USB2 EHCI Controller #1 [8086:293a] (rev 02)
00:1e.0 PCI bridge [0604]: Intel Corporation 82801 PCI Bridge [8086:244e] (rev 92)
00:1f.0 ISA bridge [0601]: Intel Corporation 82801IR (ICH9R) LPC Interface Controller [8086:2916] (rev 02)
00:1f.2 RAID bus controller [0104]: Intel Corporation 82801 SATA Controller [RAID mode] [8086:2822] (rev 02)
01:00.0 VGA compatible controller [0300]: NVIDIA Corporation G86 [Quadro NVS 290] [10de:042f] (rev a1)
3f:00.0 Ethernet controller [0200]: Broadcom Corporation NetXtreme BCM5755 Gigabit Ethernet PCI Express [14e4:167b] (rev 02)

It does not mater what im doing it simply drops at random times. I could be surfing the internet, accessing remote resources.

As far as I know we are not using IPV6. If I do a /etc/init.d/network restart eth0 it does come back up for a short period of time.

On 01/02/2013 03:56 PM, joescott4t wrote:
>
> As far as I know we are not using IPV6. If I do a /etc/init.d/network
> restart eth0 it does come back up for a short period of time.

Does you router have a light that indicates a connection? If so, does that light
go out? You might try a new cable, or reseating the connector.

When the dropout occurs, is anything logged in dmesg?