Re: Strange behaviour on PCEngines APU2

[christos%astron.com@localhost (Christos Zoulas)]

In article <5DD59183.10601%shangtai.net@localhost>,
Staffan Thomén  <duck%shangtai.net@localhost> wrote:
>Greg Troxel wrote:
>> Staffan Thomén<duck%shangtai.net@localhost>  writes:
>>
>>> I recently got a PCEngines APU2 (not sure of the exact model) to
>>> replace my failing Soekris gateway
>>
>> As Joseph taught Eliza to say, many others have the same sorts of
>> feelings.
>>
>> Except that my net5501 was fine, just slow, and I got an apu2d4.
>
>Yeah, my net6501 started to exhibit a well known fault (the "Red LED of 
>Death") where it doesn't get as far as the bios when booting "warm" (once 
>running it would keep running though). You can still use the +++ command on 
>the serial console to get to the uManager when it is in this state, but it has 
>to cool down for a couple of hours unplugged before it'd boot back up again.
>
>Someone on the Internet(tm) claimed that replacing two caps near the power 
>connector helped, but that didn't solve the problem on mine.
>
>Anyway, I found what was causing the issue, if not how. I have a telldus 
>tellstick 433MHz "home automation" controller connected via USB to the system, 
>and removing it completely cleared the problem. The APU has been running for 
>several days now without issue.
>
>However I really would like to be able to control my lights...
>
>Normally the tellstick would attach as a uftdi device with an ucom, but 
>because the controlling daemon uses libftdi I've disabled those and it's 
>attached as an ugen device.
>
>There was also a problem communicating with it when it attached using ehci, 
>disabling ehci made it connect through an uhub attached to xhci and it started 
>to work. Apparently something isn't working right though, but I don't know any 
>knobs to twiddle here.
>
>The device was working flawlessly on the soekris.
>
>Any suggestions?

Use a powered usb hub.

christos