Thinkpad T510: LAN? CPU-C3?

[Brandon Gooch]

On Mon, Mar 29, 2010 at 8:45 PM, Jan Henrik Sylvester <me at janh.de> wrote:
> On 03/29/2010 20:58, Jan Henrik Sylvester wrote:
>>
>> On 03/29/2010 18:22, Rui Paulo wrote:
>>>
>>> On 29 Mar 2010, at 15:56, Rui Paulo wrote:
>>>
>>>> On 29 Mar 2010, at 11:21, Jan Henrik Sylvester wrote:
>>>>
>>>>> I would like to use FreeBSD on a Thinkpad T510. I installed 8-STABLE
>>>>> (since iwn got 6000 support after 8.0-RELEASE).
>>>>>
>>>>> *** Not working: (Any ideas?)
>>>>>
>>>>> - LAN: The Intel ethernet card (class=0x020000 card=0x215317aa
>>>>> chip=0x10ea8086 rev=0x06 hdr=0x00) is not working.
>>>>
>>>> This seems an Intel card. Which Linux driver do you use to get this
>>>> working?
>>>
>>> Actually, this seems to be supported by if_em(4).
>>
>> I guess it should be E1000_DEV_ID_PCH_M_HV_LM, which is in e1000_hw.h
>> and there is "case E1000_DEV_ID_PCH_M_HV_LM" in e1000_api.c, but nothing
>> in if_em.c for 8-STABLE. Revision 200243 has brought it to CURRENT on
>> Dec-8, but that one did not get MFCed to 8-STABLE. I wonder if that was
>> on purpose. (I put jfv@ on Cc, who did the commit.)
>>
>>>>> - CPU-C3: No C3 (dev.cpu.0.cx_supported: C1/3 C2/245) for i7-620M.
>>>>> Battery life will not be good without C3, and Turbo Boost will not
>>>>> work either. (Apparently, Linux got C3 support on a quick boot with
>>>>> a live CD.)
>>>>
>>>> Did you try removing the power cord? Sometimes C3 is hidden and only
>>>> shows up when the power cord is unplugged.
>>
>> (I definitely should have put in the battery before pulling the power
>> cord...)
>>
>> Unplugging the power while running FreeBSD does not change the sysctl.
>> Or would I have to boot on battery? That would severely restrict the
>> use. (I will try that later.)
>>
>> Turbo Boost requires C3 and is not a feature that is typically used on
>> battery.
>
> Booting on battery did not give me C3, either. What can I do next?
>
> Cheers,
> Jan Henrik

Take a look at this:

http://wiki.freebsd.org/TuningPowerConsumption

I've used this guide to get C3 working on several notebooks...

-Brandon