On 07/17/2017 12:22 PM, Florian Zieboll wrote:
[snip]
> http://hintshop.ludvig.co.nz/show/persistent-names-usb-serial-devices/

Thanks. Yes, it seems I have udev. The link is helpful, I think it
probably would solve the problem. However, these specific cables lack a
reportable serial number

...
Jul 10 04:09:09 me kernel: [    6.545480] usb 1-1.1.3:
    New USB device found, idVendor=067b, idProduct=2303
Jul 10 04:09:09 me kernel: [    6.545481] usb 1-1.1.3:
    New USB device strings: Mfr=1, Product=2, SerialNumber=0
...
Jul 10 04:09:09 me kernel: [    6.555898] usb 1-1.1.3:
    pl2303 converter now attached to ttyUSB0
...
Jul 10 04:09:09 me kernel: [    6.765357] usb 1-1.1.4:
    New USB device found, idVendor=067b, idProduct=2303
Jul 10 04:09:09 me kernel: [    6.765358] usb 1-1.1.4:
    New USB device strings: Mfr=1, Product=2, SerialNumber=0
...
Jul 10 04:09:09 me kernel: [    6.767013] usb 1-1.1.4:
    pl2303 converter now attached to ttyUSB1
...

and thus they seem to put me in an untenable situation. I've just tried
some of them on another box with a different distro and also get a
serial number of 0 there too. So I think I am probably stuck with
wandering device names.

/Lars