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Date: Tue, 14 Feb 2012 15:42:16 +0100
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Subject: realtek NIC constantly hanging up
From: Georgi Kehaiov <kehaiov.lkml@googlemail.com>
To: linux-kernel@vger.kernel.org
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Hello everyone,

I've got a new gigabyte 970a-ud3 with a built in realtek ethernet
controller. The problem I'm experiencing is that the network interface
goes down (kinda... it's still there but I don't seem to receive or
send any packets at all) and I need to restart my network daemon to
get networking back on. In couple of minutes/hours the same problem
occurs again. And then again and again... Sometimes it happens while
I'm uploading something big (3-4 MB/s), sometimes it just happens when
I'm playing nethack (next to no traffic at all). I've been browsing
around for some time now and there are actually some people who've had
a similair issue. But in my case it has nothing to do with
1000T-base-mode or 100T-base-mode - I'm downloading stuff from dc hubs
with ~100MB/s. I have tried both the r8168 and r8169 drivers - it
doesn't matter, the problem keeps occuring.

Some info:

?lspci -vvv
03:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd.
RTL8111/8168B PCI Express Gigabit Ethernet controller (rev 06)
? ? ? ? Subsystem: Giga-byte Technology GA-EP45-DS5 Motherboard
? ? ? ? Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop-
ParErr- Stepping- SERR- FastB2B- DisINTx+
? ? ? ? Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort+
<TAbort+ <MAbort- >SERR- <PERR- INTx-
? ? ? ? Latency: 0, Cache Line Size: 64 bytes
? ? ? ? Interrupt: pin A routed to IRQ 43
? ? ? ? Region 0: I/O ports at ee00 [size=256]
? ? ? ? Region 2: Memory at fdbff000 (64-bit, prefetchable) [size=4K]
? ? ? ? Region 4: Memory at fdbf8000 (64-bit, prefetchable) [size=16K]
? ? ? ? Capabilities: <access denied>
? ? ? ? Kernel driver in use: r8168
?uname -a
Linux imladris 3.2.5-1-ARCH #1 SMP PREEMPT Tue Feb 7 08:34:36 CET 2012
x86_64 AMD Phenom(tm) II X4 960T Processor AuthenticAMD GNU/Linux

?ethtool eth0
Settings for eth0:
? ? ? ? Supported ports: [ TP ]
? ? ? ? Supported link modes: ? 10baseT/Half 10baseT/Full
? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? 100baseT/Half 100baseT/Full
? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? 1000baseT/Full
? ? ? ? Supported pause frame use: No
? ? ? ? Supports auto-negotiation: Yes
? ? ? ? Advertised link modes: ?10baseT/Half 10baseT/Full
? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? 100baseT/Half 100baseT/Full
? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? 1000baseT/Full
? ? ? ? Advertised pause frame use: Symmetric Receive-only
? ? ? ? Advertised auto-negotiation: Yes
? ? ? ? Speed: 1000Mb/s
? ? ? ? Duplex: Full
? ? ? ? Port: Twisted Pair
? ? ? ? PHYAD: 0
? ? ? ? Transceiver: internal
? ? ? ? Auto-negotiation: on
? ? ? ? MDI-X: Unknown
? ? ? ? Supports Wake-on: pumbg
? ? ? ? Wake-on: g
? ? ? ? Current message level: 0x00000033 (51)
? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?drv probe ifdown ifup
? ? ? ? Link detected: yes
my current dmesg:?http://paste.pocoo.org/show/550817/
my current lsmod:?http://paste.pocoo.org/show/550820/


I'm completely clueless here, so if anyone can help me out on this it
would be awesome.
Best Regards,
Georgi Kehaiov
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