[coreboot] Supermicro H8QME-2+ mct_d fatal exit.
knuku at gap.upv.es
Mon Mar 8 12:46:12 CET 2010
thx all of you for your comments. Here a little update :)
I now know why the boards worked just fine up here in my lab. To know if
the board would work after being unplugged I always "only" unplugged the
electrical cable but never the monitor attached to the board I figured
out that the monitor is providing enough juice to maintain whatever
alive in the board so after plugging the electrical cable on again
coreboot started fine. Another thing I figured out is that it seems that
the front leds of the board a managed by GPIO as well, is this right? If
so it seems that something is wrong with GPIO because the power on led
never works with coreboot.
ron minnich escribió:
> Just FYI:
> on our first system with Arima boards in 2002, everything worked well
> until we started booting 64-bit kernels. I'm not kidding. We did not
> find the SMBUS MUX on the boards until we had unreliable coreboot
> boots of 64-bit kernels. For quite some time the boards worked fine.
> Ollie found the SMBUS MUX by examining schematics.
> So the SMBUS mux can appear in strange ways, at strange times. This
> sounds like one of those times. SMBUS muxes are more common than you
> might think and the default power-on state is not always very well
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