[mythtv-users] Why does my dvr randomly drop from the network?

[PJ]

> On 09/24/2011 11:28 AM, Michael Watson wrote:
>> On 25/09/2011 01:09, Rick wrote:
>>> On 09/24/2011 09:47 AM, John Drescher wrote:
>>>> On Sat, Sep 24, 2011 at 9:23 AM, Rick<rbonafied at gmail.com>     wrote:
>>>>> Hi,
>>>>>
>>>>> I admit I'm in a bit of a panic and I'm fearful that the answer will be
>>>>> a bad motherboard.  I'm keeping an open mind!
>>>>>
>>>>> The problem is my DVR randomly drops from the network within the hour
>>>>> after a reboot.  The link beat it still there, it just stops
>>>>> communicating.  If I unplug the cable and plug it back in, it comes back
>>>>> to life.  If I rmmod r8169 and modprobe r8169 it comes back to life.
>>>>> If, however, I shut down eth0 and bring it back up, it doesn't come back
>>>>> to life.  I even reset the bios to defaults and started again.
>>>>>
>>>>> I figured it was something with the OS, so I just reloaded the OS from
>>>>> scratch and it happened again.  I'm freakin!
>>>>>
>>>> The realtek r8169  was never a good nic.
>>>>
>>>> John
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>>>>
>>> Is there a setting or something I could try?  That nic is all I have at
>>> the moment.
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>> Before you jump to the conclusion that it is your network card causing
>> the issue, try running a few tests.
>> The Realtek R8169 may not be a good network card, but they do still
>> work. (and ultra cheap)
>>
>>
>> Try a different port in the hub.
>> Try a different network cable.
>>
>> Regards
>> Michael
>>
>>
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>
> I've tried a different port (no difference).  I'll go try a different
> network cable.
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>
I'm having similar problems with my home server's Realtek RTL8111 after 
it overheated this summer. It hangs almost immediately when link speed 
is 1 Gbps or it's offloading features are enabled. As a temporary 
solution I'm using it with 100 Mbps switch and most offloading features 
disabled and it has been stable.

You can try to use ethtool to set link speed to lower value and to 
disable some offloading features in case some of them are enabled by 
default.