live usb freezes on boot

Sepherosa Ziehau sepherosa at
Mon May 14 00:27:44 PDT 2012

On Sat, May 12, 2012 at 8:39 PM, Mountpeaks <northwoods at> wrote:
> Good day everyone, this is my first attempt at BSD 's, and I 'm already stuck)  So, I've created boot USB from .img file and trying to boot it. The boot process gets stuck at "ACPI FADT :SCI testing interrupt mode..." for like 20 min already. My machine is a laptop Lenovo thinkpad EDGE 13 ' . I can get to prompt but my keyboard does not work) I have a feeling that it is simply not supported which is sad.With verbose mode I get "ACPI FADT:SCI testing level/low
> IOAPIC:irq 9,gsi 9 edge/ high -> level/low"
> Any tips on how to get it running?

Sigh, the SCI trigger/polarity testing probably does not work on your
box.  Using the value in the MADT does not work; forcefully setting
them to level/low does not work either, so we try testing the

Here are the "last resort" tunables:

The possible values for these tunables are:
hw.acpi.sci.trigger, level or edge
hw.acpi.sci.polarity, high or low

It looks like "level/low" could freeze your box, so you don't need to
test that combination.

Best Regards,

Tomorrow Will Never Die

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