I was already updated/upgraded. I did it again anyway. The problem persists.
Specifically, I did this:
$ sudo apt-get update
$ sudo apt-get upgrade
Defined a new printer in case this made any difference
Opened an arbitrary PDF. Tried to duplex the 8550DP -- fail. Retried on 5500 -- success.
I've attached a list of cups* and foo* packages with versions.
I was already updated/upgraded. I did it again anyway. The problem persists.
Specifically, I did this:
$ sudo apt-get update
$ sudo apt-get upgrade
Defined a new printer in case this made any difference
Opened an arbitrary PDF. Tried to duplex the 8550DP -- fail. Retried on 5500 -- success.
I've attached a list of cups* and foo* packages with versions.