← Back to team overview

ubuntu-phone team mailing list archive

Re: MX4 preloader

 

I understand you had to ask :). The answer is yes to all the questions. It
is not related chargers or cables. I even checked the microUSB plug of the
phone for dirt or anything that would obstruct the conductivity.

On Thu, Jul 30, 2015 at 5:24 PM Nicholas Skaggs <
nicholas.skaggs@xxxxxxxxxxxxx> wrote:

> On 07/29/2015 04:25 PM, Ionut Negru wrote:
> > Dear Sebastian,
> >
> > Thank you very much for the comprehensive response!
> >
> > My problem is that I can't make any OS (Ubuntu or Windows) to even
> > detect that I have plugged the phone on to USB.
> >
> > I have found this video(https://www.youtube.com/watch?v=A3TmXtOA0IA)
> > that shows how to force a meta boot with a hardware mod using the
> > testpoint pin, however, it is not working for MX4. Actually I can
> > generate some kind of USB plug-in event but the OS is not able to
> > communicate with the phone at all, not even for getting its device
> > description. So it might be just some bogus voltage variation that
> > gets detected by the OS.
> I have to ask; did you try a different cord? A different usb port? A
> short USB cord and trying in USB2 and USB3 ports would be my first stop.
> Granted I assume it all worked before, but :-)
>
>
> Nicholas
>

References