[coreboot] anyone use coreboot on Lenovo T520?

Iru Cai mytbk920423 at gmail.com
Thu Sep 8 13:25:15 CEST 2016

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.

> Regards,
> Patrick


> > 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
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