23568Re: [nslu2-linux] Re: slug usb controller hurt?
- Apr 8, 2009Thanks for the confirmation.
Yes, for a few days this slug was connected to both a contact (not contactless) smart card reader AND the stick.
Both devices are reported to use 100 mA by windows xp.
This leaves 1.8A for the slug itself *if* the psu really delivers 2A.
eheh, this page http://www.nslu2-linux.org/wiki/HowTo/OverClockTheSlug is reporting 1.8A too, not bad!On Wed, Apr 8, 2009 at 5:38 PM, ernstjanoud <ernstoud@...> wrote:
Sounds like a dying power supply to me. The fact that the LED on it stays on doesn't mean a thing. I reckon the power supply cannot deliver the surge that occurs when the USB stick is connected. As a result there probably is a drop in voltage causing the NSLU2 to crash.
If you have a voltmeter try what happens if you put a load on the power supply; it should deliver a steady 5 Volts upto a load of 2 amps (10 Watt). For instance a 6V 10 Watt lightbulb could be a load.
Or ofcourse try a different power adapter.
--- In firstname.lastname@example.org, SÃ©bastien Lorquet <squalyl@...> wrote:
> I just left my slug up and running a few days, nothing special, just a small
> usb stick connected.
> This morning, I wanted to ssh into in. Impossible to connect. The first
> thing I try is power down, remove the usb stick, boot from flash.
> It was all ok, the slug is working.
> Then, I plug my usb stick in usb port 2 (next to ethernet socket)
> This results in immediate lockup, ssh connection is lost.
> The only thing I can do is remove the power and restart.
> The same results happens if I connect ANY usb stick in ANY port.
> I also tried to reflash with a fresh slugosbe 5.3 binary.
> I suspect the usb controller is dead or hurt. But how is it possible? heat?
> The slug was not moved, not shocked, not in a hot place, etc
> I hope I'll find a oops on the serial console.
> I don't have one now, i'm going to try to solder a row of pins and get a
> 3.3v rs232 adapter. I hope FTDI USBMODs are ok with 3.3V, this could save me
> a lot of worries.
> Any idea on this sudden usb death?
> PS: the problem is partial, when I plug a smart card reader in port 1 (next
> to power) I get:
> usb 2-1: new full speed USB device using ohci_hcd and address 2
> usb 2-1: configuration #1 chosen from 1 choice
> and when I plug the same card reader in port 2 (next to ethernet) I get the
> slug locked.
> Argh, Sometimes the slug dies when I plug the reader in port 1 too.
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