[time-nuts] USB problems and solutions - Some what Off Topic

[Bob Camp]

Hi

I’m not sure I can be of much help. I typically run several dozen serial ports on various
machines without much trouble at all. They *all*:

1) Are under XP or Win-7 (no Vista)
2) Run FTDI drivers and nothing else
3) Get the drivers straight from FTDI

My case is so far off from your case that I don’t think it’s doing you any good …


Bob

> On May 29, 2015, at 3:17 PM, Cash Olsen <radio.kd5ssj at gmail.com> wrote:
> 
> I have been plagued with hard crashes of the computer when plugging in and
> unplugging USB devices. I have generally determined that some of the USB to
> serial devices are the worst offenders. I am also suspicious of some of the
> hubs. I wander if even the operating system is partly to blame.
> 
> I'm using Windows Vista, and have several different USB to serial adapters.
> Most are Silicon Labs and Prolific. I thought I had the problem resolved
> with Prolific by over-riding the driver and installing an earlier version
> but Windows may have updated the driver, that seems to be a common problem.
> 
> I'm coming to time-nuts because I remember that at least one member had a
> very large number of adapters on one computer, so I'm hoping to find some
> help. I don't generally seem to have trouble with other USB devices, just
> the serial adapters.
> 
> One further issue, the COM ports are marked in use from 3 to 50+ and I'm
> only using at any one time 3 or 4. Can I clean up the assignments and can I
> make the assignments static after connect and reconnect or restarting the
> computer?
> 
> -- 
> S. Cash Olsen KD5SSJ
> ARRL Technical Specialist
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