[cups] HPLIP: 2 drivers, 1 is problematic

[Grant]

>> I have the latest version of HPLIP installed and I added a new printer
>> to CUPS which is an HP LaserJet 400 M401dne.  Two relevant drivers
>> appear in CUPS:
>>
>> - HP LaserJet 400 M401dne USB PHGFC47100 HPLIP (HP LaserJet 400 M401dne)
>>
>> - HP LaserJet 400 M401dne (HP LaserJet 400 M401dne)
>>
>> The first one is the default but it causes a 3-second pause in between
>> printing jobs.  The second one prints without the pause.  Does anyone
>> know why this happens, how to fix the first driver, or how to
>> configure CUPS to default to the second driver?
>
>
> One cannot configure CUPS to prefer a particular driver.
>
> Printer drivers are not part of CUPS.


I was wrong, it's not the printer driver, it's the CUPS connection
method.  If the connection is hp:/ then I have the problematic pause.
If the connection is usb:// then there is no pause.  Can I blacklist
hp:/ connections?

- Grant