Realtek Lan connection timeout

[dillzz]

With Ubuntu 9.10 I have had a frustrating experience with the following hardware/driver. All network settings are statically set. Upon first boot and random times during normal usage I experience a loss in pings to public servers. At this point all network connectivity is very sporadic. The only resolution to this is sudo sh /etc/init.d/networking stop, then a start. This is not hardware related as I dual boot and this has never been seen in Win. Also this never happend in prior Ubuntu versions, such as 8.04. Any ideas?

2.6.31-17-generic #54-Ubuntu SMP x86_64

Realtek Semiconductor Co., Ltd. RTL8111/8168B PCI Express Gigabit Ethernet controller (rev 01)

lsmod | grep r8
r8168 101556 0

sudo modinfo r8168
filename: /lib/modules/2.6.31-17-generic/kernel/drivers/net/r8168.ko
version: 8.017.00-NAPI
license: GPL
description: RealTek RTL-8168 Gigabit Ethernet driver
author: Realtek and the Linux r8168 crew <netdev@vger.kernel.org>
srcversion: A1C7F4F267B431A9A62A658
alias: pci:v000010ECd00008168sv*sd*bc*sc*i*
depends:
vermagic: 2.6.31-17-generic SMP mod_unload modversions
parm: speed:force phy operation. Deprecated by ethtool (. (array of int)
parm: duplex:force phy operation. Deprecated by ethtool (. (array of int)
parm: autoneg:force phy operation. Deprecated by ethtool (. (array of int)
parm: rx_copybreak:Copy breakpoint for copy-only-tiny-frames (int)
parm: use_dac:Enable PCI DAC. Unsafe on 32 bit PCI slot. (int)
parm: debugebug verbosity level (0=none, ..., 16=all) (int)


sudo ethtool eth0
Settings for eth0:
Supported ports: [ TP ]
Supported link modes: 10baseT/Half 10baseT/Full
100baseT/Half 100baseT/Full
1000baseT/Full
Supports auto-negotiation: Yes
Advertised link modes: 10baseT/Half 10baseT/Full
100baseT/Half 100baseT/Full
1000baseT/Full
Advertised auto-negotiation: Yes
Speed: 1000Mb/s
Duplex: Full
Port: Twisted Pair
PHYAD: 0
Transceiver: internal
Auto-negotiation: on
Supports Wake-on: pumbg
Wake-on: g
Current message level: 0x00000033 (51)
Link detected: yes

[Sissy]

Re: Realtek Lan connection timeout

Is this a wireless or wired card? And are you using a desktop or laptop?
(I apologize, this is probably obvious from your post above, but I'm still learning how to interpret those sorts of things.)

I've had similar troubles with my Realtek 8191 wireless card. I found the following solution on Launchpad:

Andrea Baudracco wrote on 2010-03-11: #253
My temporary solution (Toshiba Satellite Pro U500, driver 0014):
in /etc/acpi/wireless-rtl-ac-dc-power.sh replace RTL8192_BATT_POWER=6 with RTL8192_BATT_POWER=0 (line 15)
in this manner the wlan card never go in battery mode
I tested this solution for about 8-9 days (with and without AC cord) and I have no problem ....
[for csc: i have tested that if you change CONTROL_RTL_POWER to 0 the wlan card always go in battery mode only (because this is the default mode) and, obviously, don't work correctly ... when the wlan card is in battery mode the ping response is about 1 ms slow than in AC mode, I use this trick for testing the power card state]
another solution is setting power card state manually:
"iwpriv wlan0 set_power 0" -> AC mode
"iwpriv wlan0 set_power 6" -> battery mode (the broken state)
ciao

You may have a similar option in /etc/acpi/wireless-rtl-ac-dc-power.sh, since your card is Realtek also.
(Note: if you do have this option, you may need to reboot a few times before you see an effect.)