[coreboot] Random Shutdown on Thinkpad X220

ng0 ng0 at infotropique.org
Sun Oct 29 18:35:28 CET 2017

Tom Li via coreboot transcribed 2.4K bytes:
> Hello everyone.
> I recently purchased a used Thinkpad X220 with Intel i7-2620M (SandyBridge) CPU,
> and have installed coreboot since day one. Everything seemed to work well, but
> since then this laptop suffered from shutting down randomly.
> The random shutdown appears to be completely random, the machine just simply lost
> power as if someone pulls the plug, without any possible precautions. It occurs
> with or without battery installed, or the source of power, and determinated
> to be irrelevant to CPU temperature. In fact, the system is less likely to shutdown
> if it was performing computation-intensive tasks. It occurs on multiple versions
> of Linux kernel, stable and master branch of coreboot.
> On my system, it also has some random hangs as described in Ticket #121 [1], but I
> believe it's a independent issue not related these mysterious shutting downs.
> A quick search on the Internet showed many similar reported cases.
> https://forums.lenovo.com/t5/ThinkPad-X-Series-Laptops/Major-X220-Motherboard-Problems-Horrible-Service/td-p/683551
> https://forums.lenovo.com/t5/ThinkPad-X-Series-Laptops/X220-Random-Shutdown-Power-up/td-p/589231
> https://forums.lenovo.com/t5/ThinkPad-X-Series-Laptops/I-ve-bought-the-best-model-of-X220-July-11-and-I-m-completely/m-p/565483#M32733
> https://forums.lenovo.com/t5/ThinkPad-X-Series-Laptops/x220-random-shutdown/m-p/592885#M24634
> https://forums.lenovo.com/t5/ThinkPad-X-Series-Laptops/X220-Random-shutdown/m-p/536495
> https://www.reddit.com/r/thinkpad/comments/3ex0rj/x220_random_hard_shutdown/
> https://forum.thinkpads.com/viewtopic.php?t=106961
> And lots of possible reasons were purposed, from bad battery, bad RAM, to bad
> keyboard. The most interesting suggestion was one source (Reddit) claiming a bad
> keyboard connection may trigger a poweroff signal and another source also stated
> a bended PCB under Trackpoint may short the power button cable and shut the machine
> down randomly. I haven't check it on my machine so far...
> But it looks like most of the problems were caused by the somewhat defective
> motherboard. I'm going to purchase another X220 motherboard with Core i5 next
> week, and possiblely to pay someone to rework the board, transplating the Core
> i7 to the other motherboard.
> Do you ever encountered a problem like this? What is your suggestion for me
> to try before replacing the motherboard?

I have a random color-glitch and eventually freezing up with a dark-screen
with no debbug messages whatsoever issue with the same model. Since this
can be functional for 14+ hours without any issues in between, and my
configuration is somewhat lazy-unique (no binary blob for the VGA included,
etc) I don't regard it as much of a problem.
I just read that this (color glitch) used to happen/happens regulary
with x220 coreboot.

In your case, you could try to debug your coreboot config and see if
it's caused by some parts of the config.

> Cheers,
> Tom Li
> -- 
> coreboot mailing list: coreboot at coreboot.org
> https://mail.coreboot.org/mailman/listinfo/coreboot

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