[arch-general] forcing speed/duplex on Intel e1000 driver

[Chuck Remes]

On Jan 6, 2008, at 5:40 PM, Snarkout wrote:

> On Sunday 06 January 2008, Chuck Remes wrote:
>> A service provider has forced all of their switch ports to 100/ 
>> full. I
>> need to do the same on a box running archlinux x86_64 w/kernel  
>> 2.6.22-
>> ARCH and the Intel e1000 driver.
>>
>> I edited /etc/modprobe.conf to contain these lines:
>>
>> e1000 Speed=100,100,100,100
>> e1000 Duplex=2,2,2,2
>>
>> However, the messages in /var/log/kernel.log indicate the interfaces
>> are still coming up as 100/half which implies they are still
>> attempting to autonegotiate and failing therefore defaulting to 100
>> (which can be sensed) and half-duplex (which can't be sensed, so this
>> is the default).
>>
>> What's the best way to force the driver into 100/full on boot?
>
> I think you want this in modprobe.conf:
>
> alias eth0 e1000
> options e1000 Speed=100 Duplex=2
>
> This works for me, but you can check it with ethtool afterwards.

I have multiple interfaces so I skipped using the 'alias' line.  
Otherwise, your suggestion worked. Looks like I need to say 'options'  
first which I hadn't realized was required.

Thank you!