Re: [coreboot] anyone use coreboot on Lenovo T520?

[Patrick Rudolph]

On Wed, 7 Sep 2016 21:15:05 +0800
Iru Cai  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'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 ?

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

anyone use coreboot on Lenovo T520?

[Iru Cai]

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  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

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

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  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