On Wed, May 10, 2017 at 2:07 PM Robert Mustacchi <[email protected]> wrote:
> Great, thanks. That helps. The next thing to figure out is whether or
> not we're reaching the ftdi driver or not when we're failing to connect
> these other ports. To do that, could you make sure that the USB device
> is unplugged and then run:
>
> dtrace -n 'fbt::usbser_attach:return{ trace(arg1); stack(); }'
>
> After which, plug in the device.
>
>
Unplugged device.
Executed the dtrace line as stated, redirected to file.
Attached device, waited for the device to settle (takes about 20 seconds.)
The device has blinken lights on the front for each port. Did it's normal
pattern of visually blinking the first 9 ports once, and then doing a
triple blink of the last 7 ports. For comparison, when attaching to a
windows box, it blinks the lights in order, rapidly, over about 1 second
total.
Ended dtrace.
Wrote this email and attached the dtrace. Hoping it makes it through the
list engine. Added Robert as a direct recipient just to make sure.
Thanks.
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usbser_attach.dtrace
Description: Binary data
