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 <[email protected]> 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 >
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