[coreboot] anyone use coreboot on Lenovo T520?

[Nico Huber]

Hi Iru,

On 08.09.2016 13:25, Iru Cai wrote:
> Hi Patrick,
> 
> On Wed, Sep 07, 2016 at 05:36:45PM +0200, Patrick Rudolph wrote:
>> On Wed, 7 Sep 2016 21:15:05 +0800
>> Iru Cai <mytbk920423 at gmail.com> wrote:
>>
>> Hi Iru,
>> I've got a T520 with soldered pin header as in the referenced wiki page,
>> and I've got a T420 where I had to use 10cm long wires to place the pin
>> header near the RAM slots to make it accessible through the bottom flap.
>>
> 
> I never solder pins on T420, and have no such problem. Maybe there's
> something to do with my soldering skills.
> 
>> I've got no problems using both devices.
>>
>> Can you give more information where the system hangs ?
>> Does it hang in coreboot? Does it occur after hours running the system ?
> 
> The machine boots fine to Linux, but it can freeze after some time,
> and I can't predict when this will happen.

Did you check that the ME is still doing fine? A log with
CONFIG_DEFAULT_CONSOLE_LOGLEVEL >= DEBUG should tell.

I'd also double check that the microcode update does it's job.

Regards,
Nico

> 
>>
>> Regards,
>> Patrick
>>
> 
> Regards,
> Iru
> 
>>> Hi community,
>>>
>>> I've had this problem for a long time, but I don't feel like to ask it
>>> until some one ask me about this problem.
>>>
>>> Lenovo T520 has a BIOS chip under the magnesium structure frame, and
>>> it may have a WSON package, so I solder a pin connector at the `J100'
>>> solder place. (https://www.coreboot.org/Board:lenovo/t520#Flashing)
>>> However, I don't know whether it can cause problems. I flashed two
>>> pieces of T520 mainboard (without nVIDIA GPU) before, and after it had
>>> coreboot installed, the system could hang randomly, I don't know what
>>> had happened. I hadn't tested it with the pin connector soldered and
>>> factory firmwae.
>>>
>>> So I hope some one with this laptop can report some status in using.
>>>
>>> Regards,
>>> Iru
>>
>>
>>