On Sat 2 Jul 2022, at 23:43, Brian Potkin <claremont...@gmail.com> wrote: [...] > On Fri 01 Jul 2022 at 13:37:07 +0100, Gareth Evans wrote: >> Driverless queues don't seem to work >> no matter how set up. > > Yet earlier (and at OpenPrinting) you said: > > Having deleted all printers from system-config-printer, > $ sudo lpadmin -p testq -v ipp://192.168.0.14/ipp/print -E -m > driverless:ipp://192.168.0.14/ipp/print > now succeeds, and so does printing to it.
Apologies, driverless queues only work if set up by lpadmin. Everywhere queues work from cups-web. May I suggest you may not be able to reproduce the bug as you (said you) don't have a fax-capable printer? It seems to me that my driverless print jobs end up in a fax queue if the queue is created by cups-web or s-c-p. If this is the main symptom, I would be grateful if you would advise if this changes what the bug should be reported against. I respect that you may no longer wish to be involved with this issue - thanks for your help - here is some further info for info's sake :) At least one other user seems to have a similar problem: "However, printing does not work, although the printer gets data, but then hangs." https://lists.debian.org/debian-user/2022/06/msg00558.html The printer concerned there also appears to have airprint/fax https://productz.com/en/samsung-xpress-sl-c480fw/p/wxnG7 Substituting "gives up" for "hangs", this reflects my issue too. I can find no significant difference between driverless PPDs, though everywhere PPDs do not include fax details, and everywhere queues added from cups-web succeed in printing. Might this be another pointer to the issue? $ history | grep testq-drvless sudo lpadmin -p testq-drvless -v ipp://192.168.0.14/ipp/print -E -m driverless:ipp://192.168.0.14/ipp/print $ sudo cat testq-drvless.ppd | grep -i fax *NickName: "Brother MFC-L2740DW series, Fax, driverless, cups-filters 1.28.7" *cupsIPPFaxOut: True *OpenUI *faxPrefix/Pre-Dial Number: PickOne *OrderDependency: 10 AnySetup *faxPrefix *DefaultfaxPrefix: None *faxPrefix None: "" *CloseUI: *faxPrefix *CustomfaxPrefix True: "" *ParamCustomfaxPrefix Text: 1 string 0 64 $ history | grep ippeve sudo lpadmin -p testq-ippeve -v ipp://192.168.0.14/ipp/print -E -m everywhere $ sudo cat testq-ippeve.ppd | grep -i fax $ Though even testq-drvless sometimes shows strange job attribs in s-c-p: "job-printer-state-message: Phone number for fax not valid! Fax cannot be sent" "job-printer-uri: ipp://localhost/printers/testq-drvless" though the job (from geany) actually printed. $ sudo diff CUPSWEBDL.ppd testq-drvless.ppd 20c20 < *APSupplies: "http://mfcl2740dw.local./net/net/airprint.html"; --- > *APSupplies: "http://192.168.0.14/net/net/airprint.html"; $ sudo diff CUPSWEBDL.ppd SCPDL.ppd $ $ ping mfcl2740dw.local PING mfcl2740dw.local (192.168.0.14) 56(84) bytes of data. 64 bytes from 192.168.0.14 (192.168.0.14): icmp_seq=1 ttl=255 time=9.80 ms $ ping mfcl2740dw.local. PING mfcl2740dw.local. (192.168.0.14) 56(84) bytes of data. 64 bytes from 192.168.0.14 (192.168.0.14): icmp_seq=1 ttl=255 time=3.62 ms $ sudo lpadmin -p testqhostname -v ipp://mfcl2740dw.local/ipp/print -E -m driverless:ipp://mfcl2740dw.local/ipp/print lpadmin: Printer drivers are deprecated and will stop working in a future version of CUPS. $ sudo diff testqhostname.ppd CUPSWEBDL.ppd $ $ lp -d testqhostname /etc/nsswitch.conf request id is testqhostname-56 (1 file(s)) Succeeds. /var/log/cups/error_log [...] 2833 D [03/Jul/2022:02:05:45 +0100] Create-Job ipp://localhost/printers/testqhostname [...] 3359 D [03/Jul/2022:02:05:46 +0100] [Client 605] Processing GET /printers/testqhostname.ppd 3360 D [03/Jul/2022:02:05:46 +0100] [Client 605] filename="/etc/cups/ppd/testqhostname.ppd", type=application/vnd.cups-ppd [...] 3794 D [03/Jul/2022:02:05:47 +0100] [Job 56] job-uri uri ipp://mfcl2740dw.local:631/ipp/print/job-225 3805 D [03/Jul/2022:02:05:47 +0100] [Job 56] printer-uri uri ipp://mfcl2740dw.local:631/ipp/print $ lp -d CUPSWEBDL /etc/nsswitch.conf request id is CUPSWEBDL-55 (1 file(s)) Fails. /var/log/cups/error_log [...] 70 D [03/Jul/2022:02:04:51 +0100] Create-Job ipp://localhost/printers/CUPSWEBDL [from line 1349] 71 D [03/Jul/2022:02:04:55 +0100] [Client 581] Processing GET /printers/CUPSWEBDL.ppd 72 D [03/Jul/2022:02:04:55 +0100] [Client 581] filename="/etc/cups/ppd/CUPSWEBDL.ppd", type=application/vnd.cups-ppd [...] 1495 D [03/Jul/2022:02:04:56 +0100] [Job 55] job-uri uri ipp://mfcl2740dw.local:631/ipp/faxout/job-224 1506 D [03/Jul/2022:02:04:56 +0100] [Job 55] printer-uri uri ipp://mfcl2740dw.local:631/ipp/faxout lpstat -t shows cups-web created devices as: device for CUPSWEBDL: ipp://Brother%20MFC-L2740DW%20series._ipp._tcp.local/ vs device for testq-drvless: ipp://192.168.0.14/ipp/print device for testq-ippeve: ipp://192.168.0.14/ipp/print - does the ipp:// string come from Avahi for cups-web created queues? That's the only place I can find that value: $ avahi-browse -a <snip> + wlp1s0 IPv4 Brother MFC-L2740DW series Web Site local + wlp1s0 IPv4 Brother MFC-L2740DW series _scanner._tcp local + wlp1s0 IPv4 Brother MFC-L2740DW series Internet Printer local + wlp1s0 IPv4 Brother MFC-L2740DW series UNIX Printer local + wlp1s0 IPv4 Brother MFC-L2740DW series PDL Printer local <snip> Also this error is common: $ lpstat -t scheduler is running system default destination: SCPDL device for Brother_MFC_L2740DW_series: implicitclass://Brother_MFC_L2740DW_series/ device for CUPSWEBDL: ipp://Brother%20MFC-L2740DW%20series._ipp._tcp.local/ <snip> Brother_MFC_L2740DW_series accepting requests since Mon 27 Jun 2022 22:25:06 BST <snip> printer Brother_MFC_L2740DW_series disabled since Mon 27 Jun 2022 22:25:06 BST - No destination host name supplied by cups-browsed for printer "Brother_MFC_L2740DW_series", is cups-browsed running? <snip> $ sudo service cups-browsed status ● cups-browsed.service - Make remote CUPS printers available locally Loaded: loaded (/lib/systemd/system/cups-browsed.service; enabled; vendor preset: enabled) Active: active (running) since Sun 2022-07-03 00:27:22 BST; 2h 26min ago Main PID: 2860 (cups-browsed) Tasks: 3 (limit: 14146) Memory: 2.3M CPU: 208ms CGroup: /system.slice/cups-browsed.service └─2860 /usr/sbin/cups-browsed Jul 03 00:27:22 qwerty systemd[1]: Started Make remote CUPS printers available locally. Best wishes, Gareth
