Re: [ts-7000] Re: usb and possible power supply problems

[walter marvin <>]

1) Try using a USB cable that does NOT supply power and use an external power supply

 

If that clears it up you may have a ground loop somwhere.

 

2) look on the internet about kernel debugging. Usually this means rebuild ing the kernel and inserting printks

--- On Tue, 8/17/10, Charles <> wrote:

From: Charles <>
Subject: [ts-7000] Re: usb and possible power supply problems
To:
Date: Tuesday, August 17, 2010, 8:56 PM

 

--- In , Jason Stahls <> wrote:
>
> On 8/17/2010 3:00 PM, phreakuencies wrote:
> > Hi,
> > I've been using 2.6.34 (with matt's patches) for a few weeks and I have a recurrent problem with my ts7250.
> > The problem is that I can't seem to reliably use any usb gadget (I tried a wifi card and a webcam) without suffering a reboot eventually. I suspect of a power supply problem since I saw sometimes (not always) a problem were the board would reboot repeatedly (even without reaching the 2.6 kernel which I boot after 2.4 with bootload) until I disconnected the wifi device.
> >
> > Also, this same wifi device was previously used with the on-board 2.4 kernel without these reboots (the 2GB thumbdrive was also present at that moment).
> >
> > Could it then be a power supply problem? Should I suspect a kernel problem? How can I check what is actually going on?
>
> I would start with finding a higher current power supply, 5A should be
> enough to run anything you attach to it. Others have also bypassed the
> onboard 5v supply to the USB ports and run them directly off a external
> 5v supply.

You could also try using a powered USB hub to attach the wifi & thumbdrive, before you go start modifying the hardware.

regards, ........ Charlie
>
> --
> Jason Stahls
>

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