Finally : gosh, I am stupid ! I was searching the quirks file for the Deskjet 710C ! of course there is an entry for the PL2305 chip !
Now, I ran various tests as you requested : I did not try "blacklist" nor "usb-init" (I don't have any vendor string) nor "vendor-class" (I am not sure I understand what this means) nor "whitelist". I list below the various tests I ran : in short : the result is, sadly, always the same, as if the line for the PL2305 chip was not taken into account at all. What can we do now ? Tests and their results: --------------------------- all disabled : # Prolific Technology, Inc. PL2305 Parallel Port (USB -> Parallel adapter), https://bugs.launchpad.net/bugs/987485 #0x067b 0x2305 no-reattach soft-reset unidir service cups restart lp lines.ps => printing stops at line #54 (no change) ========= # Prolific Technology, Inc. PL2305 Parallel Port (USB -> Parallel adapter), https://bugs.launchpad.net/bugs/987485 #0x067b 0x2305 no-reattach soft-reset unidir 0x067b 0x2305 no-reattach service cups restart lp lines.ps => printing stops at line #54 (no change) (no kidding :-( ========= # Prolific Technology, Inc. PL2305 Parallel Port (USB -> Parallel adapter), https://bugs.launchpad.net/bugs/987485 #0x067b 0x2305 no-reattach soft-reset unidir 0x067b 0x2305 soft-reset service cups restart lp lines.ps => printing stops at line #54 (no change) ========= # Prolific Technology, Inc. PL2305 Parallel Port (USB -> Parallel adapter), https://bugs.launchpad.net/bugs/987485 #0x067b 0x2305 no-reattach soft-reset unidir 0x067b 0x2305 unidir service cups restart lp lines.ps => printing stops at line #54 (no change) ========= # Prolific Technology, Inc. PL2305 Parallel Port (USB -> Parallel adapter), https://bugs.launchpad.net/bugs/987485 #0x067b 0x2305 no-reattach soft-reset unidir 0x067b 0x2305 no-reattach soft-reset service cups restart lp lines.ps => printing stops at line #54 (no change) ========= # Prolific Technology, Inc. PL2305 Parallel Port (USB -> Parallel adapter), https://bugs.launchpad.net/bugs/987485 #0x067b 0x2305 no-reattach soft-reset unidir 0x067b 0x2305 no-reattach unidir service cups restart lp lines.ps => printing stops at line #54 (no change) ========= # Prolific Technology, Inc. PL2305 Parallel Port (USB -> Parallel adapter), https://bugs.launchpad.net/bugs/987485 #0x067b 0x2305 no-reattach soft-reset unidir 0x067b 0x2305 soft-reset unidir service cups restart lp lines.ps => printing stops at line #54 (no change) ** Attachment added: "lines.ps" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1258919/+attachment/3934800/+files/lines.ps -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1258919 Title: 067b:2305 printing issue with parallel-to-usb adapter To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/cups/+bug/1258919/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
