Re: Disconnect/connect usb ports

[Jose Luis Rodriguez Garcia <joseyluis%gmail.com@localhost>]

On Wed, Feb 17, 2016 at 9:51 AM, Felix Deichmann <m4j0rd0m0%gmail.com@localhost> wrote:
> 2016-02-16 23:32 GMT+01:00 Jose Luis Rodriguez Garcia <joseyluis%gmail.com@localhost>:
>> Both disconnect at same time, and usually connect at few seconds at
>> same time (when they don't connect I have to reboot the pc).
>
> I had this with a USB frame grabber under Windows with a new PC, you
> could hear the disconnect and connect sounds each time (and recordings
> were always borked). Finally hunted it down to the exact moment when a
> fridge (!) with its compressor nearby turned on and off. USB together
> with modern PSUs seems very susceptible, google it.
> This is heavily dependent on your computer's PSU, the case, good
> grounding of the mainboard, and if it's related to a mains
> interference like above, there are special filters for such equipment
> (maybe the already present filter inside is broken).
> Other expensive solutions, if nothing else helps, are an online UPS
> (Uninterruptible Power Supply) for your PC or a different PSU
> reputedly...

Thank you Felix
I will try as you said.

I will use the the power supply of a laptop, and I will test it for
serveral days/weeks. The problem is very random.
As you can suppose. Neither my pc ( a nettop) or my lapto have ground.