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: [email protected] > https://mail.coreboot.org/mailman/listinfo/coreboot > -- ng0 GnuPG: A88C8ADD129828D7EAC02E52E22F9BBFEE348588 GnuPG: https://dist.ng0.infotropique.org/dist/keys/ https://www.infotropique.org https://ng0.infotropique.org
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