Bug#953419: cups: unable to print after a recent update

[Frank Brokken <f.b.brokken@rug.nl>]

Package: cups
Version: 2.3.1-7
Severity: important

Dear Maintainer,

Subject: cups: unable to print after a recent update
Package: cups
Version: 2.3.1-11
Severity: important

Dear Maintainer,

   * What led up to the situation?

After a recent upgrade files could no longer be printed. Printing a test page
through the printer's direct web-interface still works, as does using its
document scan facilities (through xsane). Printing a test-page through the
cups interface no longer works, and neither does the lp command

   * What exactly did you do (or not do) that was effective (or
     ineffective)?

The only thing that changed was a recent update. The debian packages are
regularly updated, usually once a week.

   * What was the outcome of this action?

After a recent update standard print commands no longer worked. When trying to
print a test-page printing is pending, and 'service cups status' reports:

service cups status
● cups.service - CUPS Scheduler
     Loaded: loaded (/lib/systemd/system/cups.service; enabled; vendor preset: enabled)
     Active: active (running) since Mon 2020-03-09 13:10:31 CET; 16min ago
TriggeredBy: ● cups.path
             ● cups.socket
       Docs: man:cupsd(8)
   Main PID: 13933 (cupsd)
      Tasks: 3 (limit: 4602)
     Memory: 33.0M
     CGroup: /system.slice/cups.service
             ├─13933 /usr/sbin/cupsd -l
             ├─14170 HP_OfficeJet_Pro_8710 606 frank semval.h 1 finishings=3 number-up=1 sides=two-sided-long-edge job-uuid=urn:uuid:b9fe96d0-d6e7-31b2-7c2b-22d0a80a401a job-originating-host-name=localhost date-time-at-creation= date-time-at-proces>
             └─14171 hp:/net/HP_OfficeJet_Pro_8710?hostname=printer.oostum.north 606 frank semval.h 1 finishings=3 number-up=1 sides=two-sided-long-edge job-uuid=urn:uuid:b9fe96d0-d6e7-31b2-7c2b-22d0a80a401a job-originating-host-name=localhost date>

Mar 09 13:10:31 localhost.localdomain systemd[1]: Started CUPS Scheduler.
Mar 09 13:25:40 localhost.localdomain hp[13939]: io/hpmud/jd.c 94: unable to read device-id
Mar 09 13:25:40 localhost.localdomain hp[13939]: prnt/backend/hp.c 630: ERROR: 5012 device communication error!
Mar 09 13:26:15 localhost.localdomain cupsd[13933]: pam_unix(cups:auth): Couldn't open /etc/securetty: No such file or directory
Mar 09 13:26:15 localhost.localdomain cupsd[13933]: pam_unix(cups:auth): Couldn't open /etc/securetty: No such file or directory

I've found several references to /etc/securetty, most of them indicating that
/etc/securetty isn't used anymore, but after asking cups to print a test page
it takes a long while (about 2 minutes) before 'service cups stop' completes.

After 'service cups stop'; 'touch /etc/securetty'; and 'service cups start'
the error message no longer appears in the 'service cups status' command, but
still nothing is printed.

   * What outcome did you expect instead?

After the update I expected the print commands to continue working


-- System Information:
Debian Release: bullseye/sid
  APT prefers testing
  APT policy: (500, 'testing'), (1, 'experimental')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 5.4.0-4-amd64 (SMP w/4 CPU cores)
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8), LANGUAGE=en_US:en (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled

Versions of packages cups depends on:
ii  cups-client            2.3.1-11
ii  cups-common            2.3.1-11
ii  cups-core-drivers      2.3.1-11
ii  cups-daemon            2.3.1-11
ii  cups-filters           1.27.2-1
ii  cups-ppdc              2.3.1-11
ii  cups-server-common     2.3.1-11
ii  debconf [debconf-2.0]  1.5.73
ii  ghostscript            9.50~dfsg-5
ii  libavahi-client3       0.7-5
ii  libavahi-common3       0.7-5
ii  libc6                  2.29-10
ii  libcups2               2.3.1-11
ii  libgcc-s1              10-20200222-1
ii  libstdc++6             10-20200222-1
ii  libusb-1.0-0           2:1.0.23-2
ii  poppler-utils          0.71.0-6
ii  procps                 2:3.3.15-2+b1

Versions of packages cups recommends:
pn  avahi-daemon  <none>
ii  colord        1.4.3-4

Versions of packages cups suggests:
ii  cups-bsd                                   2.3.1-11
pn  cups-pdf                                   <none>
pn  foomatic-db-compressed-ppds | foomatic-db  <none>
ii  smbclient                                  2:4.11.5+dfsg-1
ii  udev                                       244.3-1

-- debconf information:
  cupsys/backend: lpd, socket, usb, snmp, dnssd
  cupsys/raw-print: true