[time-nuts] USB and Mouse conflict persists

[shalimr9 at gmail.com]

Hi Stan,

Do not worry, just go for it, what's the worst that can happen?

;)

Didier KO4BB

Sent from my BlackBerry Wireless thingy while I do other things...

-----Original Message-----
From: "Stan, W1LE" <stanw1le at verizon.net>
Sender: time-nuts-bounces at febo.com
Date: Thu, 12 May 2011 08:24:28 
To: Discussion of precise time and frequency measurement<time-nuts at febo.com>
Reply-To: Discussion of precise time and frequency measurement
	<time-nuts at febo.com>
Subject: Re: [time-nuts] USB and Mouse conflict persists

Hello Joop,

Thanks for the pointer.
I am slowly achieving the confidence to tackle my XP Pro registry.

Stan, W1LE






On 5/12/2011 4:12 AM, Joop wrote:
> quote: [On the tab "Port Settings" click "Advanced" and in that window 
> uncheck the
> box next to "Serial Enumerator"]
> This is a feature of the FTDI driver. Not something generic.
>
> What worked for me was to disable (postpone actually) the Windows PnP 
> device enumerator for a serial device. It works for hardware serial 
> ports as well as the USBtoRS232 converters.
> This can be done with a registry patch which adds the 
> "Skipenumerations" registry entry. Setting this to a big value skips 
> the possible detection of any device (such as a serial mouse) on a COM 
> port.
> Search the net for details. E.g. here : 
> http://support.microsoft.com/default.aspx?scid=kb;en-us;283063
>
> Lots of the USBtoRS232 converters do not contain EEPROM to store a 
> unique serial number. Without it Windows cannot be sure you unplugged 
> the same device as you re-plugged in another USB port. Its behaviour 
> is to assign it a new COM port number. Re-plugging the converter in 
> the original USB port should bring back the same COM port number.
> You will need to patch the registry again if a new COM port number is 
> assigned. If you want to avoid this, look for USBtoRS232 converters 
> that have the option to program a USB serial number (like the FTDI 
> FT232R based ones)
>
> Joop - pe1cqp
>
>
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