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Re: [Libreboot] Un-bricking a T60

From: Joshua Bowren
Subject: Re: [Libreboot] Un-bricking a T60
Date: Thu, 24 Mar 2016 19:56:26 -0400
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:38.0) Gecko/20100101 Icedove/38.7.0

So you can't see the libreboot grub menu, but you think it may be trying (and failing) to load the kernel right? Maybe it is possible to boot off of a USB drive by pressing the down arrow key once when you think it may be at the grub menu. This probably wouldn't fix anything, but whatever it does might be interesting.

Also what version of libreboot were you using. I have been using 20150518 on my T60 for sometime now. I experience frequent freezes on resuming from suspend (black screen, but inverter lights come on), but I have never had any problems with starting libreboot.

El 24/03/16 a las 11:51, Luke Shumaker escribió:
Hi guys,

My libreboot T60 decided to brick itself after I closed it and put it
in my backpack yesterday.

The wiki[1][2] assumes that the device became bricked while installing
libreboot.  This is not the case for me, so I'm a little unsure of
where to start.

What I know:

  - The screen+backlight are getting power; when I first pulled it out
    of my backpack and woke it up, it was on, filled with the solid
    color that is my X11 background.  However, after power-cycling...
  - the screen doesn't appear to respond at all. Looking very closely
    at it, I can't see anything; I don't believe that the issues is as
    simple as the backlight not turning on (an issue that I had when
    upgrading libreboot at libreplanet last year).
  - The SSD is good (tested in another box)
  - Replacing the RAM doesn't fix it.
  - Plugging in an external monitor (VGA) does nothing.
  - All internal connections seem secure, but it's possible I missed
  - One of two things happens when I try booting:
     1. The HDD light flickers briefly, and I hear the CD drive spin (checking
        if something's in it), then nothing but the power light being
     2. The HDD light flickers, and continues to do so, in a manner
        consistent with a normal boot.  But then, it stops, and the
        caps-lock light starts blinking.
  - In neither of the above 2 cases does typing my username & password
    to log in, then trying to run sound-generating commands do

I believe that case 1 is libreboot failing to even load the Linux
kernel, and case 2 is Linux starting but then panicking.

My next step is going to be pulling the CMOS coin in case BUC.TS
somehow got set.[1]

Given that I believe that the Linux kernel is sometimes panicking, I'd
love EHCI debugging, but it appears[2] that I need to have the box
working first to identify which USB port to use.  Is it consistent
across libreboot-supported T60's?  Could one of you tell me which port

I guess my final thing to try would be to use my BBB+SOIC-8-clip to
try to re-flash the firmware, but it seems unlikely to me that that
would fix it.

Any help or advice would be hugely appreciated.


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