Bug#894664: cups: Libreoffice doesn't see my network printer
> So I cannot reproduce your problem. I suppose disconnecting the ethernet > connection doesn't do anything for you? No, indeed: using only the ethernet or only the wifi connection doesn't make any difference (usually only the ethernet is up). > > Avahi Resolver: Service 'HP OfficeJet Pro 8100 @ server' of type > > '_ipp._tcp' in domain +'local' skipped, could not determine IP address. > is (to me) a clear indication that something is wrong. My knowledge of > DNS matters is sparse so I think it is time for some help. Is "local" above meant to refer to the DNS domain appended to the host (i.e. does it mean the complete host name that was tried is "server.local")? > Till, Stefan has provided quite a lot of information (is it enough?). > Are we looking at a misconfiguration, a tweak to cups-browsed.conf or > a bug? Hmm... now I looked further into my cups-browsed.conf and I think I found the culprit: I had "BrowseOrder Allow,Deny" in there. I removed it and now the printer appears. Not sure how it got there. Maybe it's when I tried to prevent those "spurious" printers advertized by some local laptops from appearing, and since I was testing this with `evince` I got the impression that none of the BrowseDeny/BrowseAllow directives had any effect and left the config file in this broken state without noticing. It's also not clear why the debug log doesn't say that those printers are simply "denied by default" and why it gives this odd "could not determine IP address" instead. But at least, on my side you can consider this bug closed as a "pilot error" (tho I'll be happy to provide more info if you want to dig further). Thank you very much for your help, Stefan
Bug#894664: cups: Libreoffice doesn't see my network printer
reassign 894664 cups-browsed thanks On Wed 04 Apr 2018 at 20:52:35 -0400, Stefan Monnier wrote: > > Thank you for thinking to send the log. There are three devices with IP > > addresses which cannot be found. Are they all printers? > > Only the HP-8100 is a real printer. The other two are advertised by > some laptop which happened to be connected. > > > Does Evince show them all? > > Yes. > > > Please do > > > > avahi-browse -art > log > > > > and post log. avahi-browse is in the avahi-utils package. > > Here it is (the laptop was absent this time). [...] I set up a bare-bones stretch client with two active interfaces as you did and ran the same command. With two print queues on a stretch server I got nothing which was significantly different from your output. The queues were visible to CUPS and there were no errors in the cups-browsed log. So I cannot reproduce your problem. I suppose disconnecting the ethernet connection doesn't do anything for you? However, > Avahi Resolver: Service 'HP OfficeJet Pro 8100 @ server' of type > '_ipp._tcp' in domain +'local' skipped, could not determine IP address. is (to me) a clear indication that something is wrong. My knowledge of DNS matters is sparse so I think it is time for some help. Till, Stefan has provided quite a lot of information (is it enough?). Are we looking at a misconfiguration, a tweak to cups-browsed.conf or a bug? Regards, Brian.
Bug#894664: cups: Libreoffice doesn't see my network printer
> Thank you for thinking to send the log. There are three devices with IP > addresses which cannot be found. Are they all printers? Only the HP-8100 is a real printer. The other two are advertised by some laptop which happened to be connected. > Does Evince show them all? Yes. > Please do > > avahi-browse -art > log > > and post log. avahi-browse is in the avahi-utils package. Here it is (the laptop was absent this time). Stefan + wlan0 IPv6 HP OfficeJet Pro 8100 @ serverUNIX Printer local + wlan0 IPv4 HP OfficeJet Pro 8100 @ serverUNIX Printer local + eth0 IPv6 HP OfficeJet Pro 8100 @ serverUNIX Printer local + eth0 IPv4 HP OfficeJet Pro 8100 @ serverUNIX Printer local + wlan0 IPv6 CUPS @ server Web Site local + wlan0 IPv4 CUPS @ server Web Site local + eth0 IPv6 CUPS @ server Web Site local + eth0 IPv4 CUPS @ server Web Site local + wlan0 IPv6 HP OfficeJet Pro 8100 @ serverInternet Printer local + wlan0 IPv4 HP OfficeJet Pro 8100 @ serverInternet Printer local + eth0 IPv6 HP OfficeJet Pro 8100 @ serverInternet Printer local + eth0 IPv4 HP OfficeJet Pro 8100 @ serverInternet Printer local + wlan0 IPv6 HP OfficeJet Pro 8100 @ server_ipps._tcp local + wlan0 IPv4 HP OfficeJet Pro 8100 @ server_ipps._tcp local + eth0 IPv6 HP OfficeJet Pro 8100 @ server_ipps._tcp local + eth0 IPv4 HP OfficeJet Pro 8100 @ server_ipps._tcp local = wlan0 IPv6 HP OfficeJet Pro 8100 @ serverUNIX Printer local hostname = [server.local] address = [fd84:6537:edcf:0:216:ff:fe03:18c4] port = [0] txt = [] = wlan0 IPv4 HP OfficeJet Pro 8100 @ serverUNIX Printer local hostname = [server.local] address = [192.168.1.2] port = [0] txt = [] = eth0 IPv6 HP OfficeJet Pro 8100 @ serverUNIX Printer local hostname = [server.local] address = [fd84:6537:edcf:0:216:ff:fe03:18c4] port = [0] txt = [] = eth0 IPv4 HP OfficeJet Pro 8100 @ serverUNIX Printer local hostname = [server.local] address = [192.168.1.2] port = [0] txt = [] = wlan0 IPv6 CUPS @ server Web Site local hostname = [server.local] address = [fd84:6537:edcf:0:216:ff:fe03:18c4] port = [631] txt = [] = wlan0 IPv4 CUPS @ server Web Site local hostname = [server.local] address = [192.168.1.2] port = [631] txt = [] = eth0 IPv6 CUPS @ server Web Site local hostname = [server.local] address = [fd84:6537:edcf:0:216:ff:fe03:18c4] port = [631] txt = [] = eth0 IPv4 CUPS @ server Web Site local hostname = [server.local] address = [192.168.1.2] port = [631] txt = [] = wlan0 IPv6 HP OfficeJet Pro 8100 @ serverInternet Printer local hostname = [server.local] address = [fd84:6537:edcf:0:216:ff:fe03:18c4] port = [631] txt = ["printer-type=0x901E" "printer-state=3" "Duplex=T" "Color=T" "TLS=1.2" "UUID=8a590a22-8022-31c0-7155-5d1c1f5bb656" "URF=DM3" "pdl=application/octet-stream,application/pdf,application/postscript,image/jpeg,image/png,image/pwg-raster,image/urf" "product=(HP Officejet Pro 8100 eprinter-n811a)" "priority=0" "note=Salon" "adminurl=https://server.local:631/printers/Salon-HP-8100; "ty=HP Officejet Pro 8100, hpcups 3.16.11" "rp=printers/Salon-HP-8100" "qtotal=1" "txtvers=1"] = wlan0 IPv4 HP OfficeJet Pro 8100 @ serverInternet Printer local hostname = [server.local] address = [192.168.1.2] port = [631] txt = ["printer-type=0x901E" "printer-state=3" "Duplex=T" "Color=T" "TLS=1.2" "UUID=8a590a22-8022-31c0-7155-5d1c1f5bb656" "URF=DM3" "pdl=application/octet-stream,application/pdf,application/postscript,image/jpeg,image/png,image/pwg-raster,image/urf" "product=(HP Officejet Pro 8100 eprinter-n811a)" "priority=0" "note=Salon" "adminurl=https://server.local:631/printers/Salon-HP-8100; "ty=HP Officejet Pro 8100, hpcups 3.16.11" "rp=printers/Salon-HP-8100" "qtotal=1" "txtvers=1"] = eth0 IPv6 HP OfficeJet Pro 8100 @ serverInternet Printer local hostname = [server.local] address = [fd84:6537:edcf:0:216:ff:fe03:18c4] port = [631] txt = ["printer-type=0x901E" "printer-state=3" "Duplex=T" "Color=T" "TLS=1.2" "UUID=8a590a22-8022-31c0-7155-5d1c1f5bb656" "URF=DM3"
Bug#894664: cups: Libreoffice doesn't see my network printer
On Wed 04 Apr 2018 at 17:37:00 -0400, Stefan Monnier wrote: > > Tentatively, this looks more like a cups-browsed issue. > > > > /etc/cups/cups-browsed should have a line "BrowseRemoteProtocols dnssd > > cups". > > Yes, I have that. > > > Try uncommenting "LogDir /var/log/cups" and "DebugLogging file" and look > > at /var/log/cups/cups-browsed_log after restarting cups-browsed. Is the > > printer in there? > > Yes, I attached the file below. > I guess the problem is > > Wed Apr 4 17:31:38 2018 Avahi Resolver: Service 'HP OfficeJet Pro 8100 @ > server' of type '_ipps._tcp' in domain 'local' skipped, could not determine > IP address. > > but I don't know why. "host server" on that same machine returns > "server.lan has address 192.168.1.2". Thank you for thinking to send the log. There are three devices with IP addresses which cannot be found. Are they all printers? Does Evince show them all? Please do avahi-browse -art > log and post log. avahi-browse is in the avahi-utils package. Cheers, Brian.
Bug#894664: cups: Libreoffice doesn't see my network printer
> Tentatively, this looks more like a cups-browsed issue. > > /etc/cups/cups-browsed should have a line "BrowseRemoteProtocols dnssd cups". Yes, I have that. > Try uncommenting "LogDir /var/log/cups" and "DebugLogging file" and look > at /var/log/cups/cups-browsed_log after restarting cups-browsed. Is the > printer in there? Yes, I attached the file below. I guess the problem is Wed Apr 4 17:31:38 2018 Avahi Resolver: Service 'HP OfficeJet Pro 8100 @ server' of type '_ipps._tcp' in domain 'local' skipped, could not determine IP address. but I don't know why. "host server" on that same machine returns "server.lan has address 192.168.1.2". Stefan Wed Apr 4 17:31:38 2018 cups-browsed: Creating http connection to local CUPS daemon: /var/run/cups/cups.sock:631 Wed Apr 4 17:31:38 2018 network interface at 192.168.1.112 Wed Apr 4 17:31:38 2018 network interface at 192.168.1.138 Wed Apr 4 17:31:38 2018 cups-browsed [BrowsePoll /var/run/cups/cups.sock:0]: IPP-Create-Subscription Wed Apr 4 17:31:38 2018 cups-browsed [BrowsePoll /var/run/cups/cups.sock:0]: subscription ID=1250 Wed Apr 4 17:31:38 2018 cups-browsed (/var/run/cups/cups.sock): cupsGetDests Wed Apr 4 17:31:38 2018 Could not determine system default printer! Wed Apr 4 17:31:38 2018 Using signal handler SIGACTION Wed Apr 4 17:31:38 2018 Avahi server connection got available, setting up service browsers. Wed Apr 4 17:31:38 2018 listening Wed Apr 4 17:31:38 2018 Avahi Browser: NEW: service 'HP OfficeJet Pro 8100 @ server' of type '_ipp._tcp' in domain 'local' Wed Apr 4 17:31:38 2018 Avahi Browser: NEW: service 'HP OfficeJet Pro 8100 @ server' of type '_ipp._tcp' in domain 'local' Wed Apr 4 17:31:38 2018 Avahi Browser: NEW: service 'HP OfficeJet Pro 8100 @ server' of type '_ipp._tcp' in domain 'local' Wed Apr 4 17:31:38 2018 Avahi Browser: NEW: service 'HP OfficeJet Pro 8100 @ server' of type '_ipp._tcp' in domain 'local' Wed Apr 4 17:31:38 2018 Avahi Browser: CACHE_EXHAUSTED Wed Apr 4 17:31:38 2018 Avahi Browser: ALL_FOR_NOW Wed Apr 4 17:31:38 2018 Avahi Browser: NEW: service 'HP OfficeJet Pro 8100 @ server' of type '_ipps._tcp' in domain 'local' Wed Apr 4 17:31:38 2018 Avahi Browser: NEW: service 'HP OfficeJet Pro 8100 @ server' of type '_ipps._tcp' in domain 'local' Wed Apr 4 17:31:38 2018 Avahi Browser: NEW: service 'HP OfficeJet Pro 8100 @ server' of type '_ipps._tcp' in domain 'local' Wed Apr 4 17:31:38 2018 Avahi Browser: NEW: service 'HP OfficeJet Pro 8100 @ server' of type '_ipps._tcp' in domain 'local' Wed Apr 4 17:31:38 2018 Avahi Browser: CACHE_EXHAUSTED Wed Apr 4 17:31:38 2018 Avahi Browser: ALL_FOR_NOW Wed Apr 4 17:31:38 2018 Avahi Resolver: Service 'HP OfficeJet Pro 8100 @ server' of type '_ipp._tcp' in domain 'local'. Wed Apr 4 17:31:38 2018 Avahi Resolver: Service 'HP OfficeJet Pro 8100 @ server' of type '_ipp._tcp' in domain 'local' skipped, could not determine IP address. Wed Apr 4 17:31:38 2018 listening Wed Apr 4 17:31:38 2018 Avahi Resolver: Service 'HP OfficeJet Pro 8100 @ server' of type '_ipp._tcp' in domain 'local'. Wed Apr 4 17:31:38 2018 Avahi Resolver: Service 'HP OfficeJet Pro 8100 @ server' of type '_ipp._tcp' in domain 'local' skipped, could not determine IP address. Wed Apr 4 17:31:38 2018 listening Wed Apr 4 17:31:38 2018 Avahi Resolver: Service 'HP OfficeJet Pro 8100 @ server' of type '_ipp._tcp' in domain 'local'. Wed Apr 4 17:31:38 2018 Avahi Resolver: Service 'HP OfficeJet Pro 8100 @ server' of type '_ipp._tcp' in domain 'local' skipped, could not determine IP address. Wed Apr 4 17:31:38 2018 listening Wed Apr 4 17:31:38 2018 Avahi Resolver: Service 'HP OfficeJet Pro 8100 @ server' of type '_ipp._tcp' in domain 'local'. Wed Apr 4 17:31:38 2018 Avahi Resolver: Service 'HP OfficeJet Pro 8100 @ server' of type '_ipp._tcp' in domain 'local' skipped, could not determine IP address. Wed Apr 4 17:31:38 2018 listening Wed Apr 4 17:31:38 2018 Avahi Resolver: Service 'HP OfficeJet Pro 8100 @ server' of type '_ipps._tcp' in domain 'local'. Wed Apr 4 17:31:38 2018 Avahi Resolver: Service 'HP OfficeJet Pro 8100 @ server' of type '_ipps._tcp' in domain 'local' skipped, could not determine IP address. Wed Apr 4 17:31:38 2018 listening Wed Apr 4 17:31:38 2018 Avahi Resolver: Service 'HP OfficeJet Pro 8100 @ server' of type '_ipps._tcp' in domain 'local'. Wed Apr 4 17:31:38 2018 Avahi Resolver: Service 'HP OfficeJet Pro 8100 @ server' of type '_ipps._tcp' in domain 'local' skipped, could not determine IP address. Wed Apr 4 17:31:38 2018 listening Wed Apr 4 17:31:38 2018 Avahi Resolver: Service 'HP OfficeJet Pro 8100 @ server' of type '_ipps._tcp' in domain 'local'. Wed Apr 4 17:31:38 2018 Avahi Resolver: Service 'HP OfficeJet Pro 8100 @ server' of type '_ipps._tcp' in domain 'local' skipped, could not determine IP address. Wed Apr 4 17:31:38 2018 listening Wed Apr 4 17:31:38 2018 Avahi Resolver: Service 'HP OfficeJet Pro 8100 @ server'
Bug#894664: cups: Libreoffice doesn't see my network printer
On Tue 03 Apr 2018 at 17:42:37 +0100, Brian Potkin wrote: > /etc/cups/cups-browsed should have a line "BrowseRemoteProtocols". "BrowseRemoteProtocols dnssd cups" Cheers, Brian.
Bug#894664: cups: Libreoffice doesn't see my network printer
On Tue 03 Apr 2018 at 07:57:13 -0400, Stefan Monnier wrote: > >> I have a printer connected via USB to a local server (running Debian > >> stable as well). This printer is made visible to my clients by > >> running cups-browsed. > > For the server to advertise its printers with DNS-SD cups-browsed is > > superfluous. > > I expressed myself poorly: the cups-browsed is running on the client. > > > For most applications and command line programs cups-browsed has to be > > running on the client; seeing nothing at localhost:631 implies it is > > not. Please give the outputs of > > > > systemctl status cups-browsed > > > > and > > > > lpstat -t > > > > on the client. > > % LANG=C systemctl status cups-browsed > * cups-browsed.service - Make remote CUPS printers available locally >Loaded: loaded (/lib/systemd/system/cups-browsed.service; enabled; vendor > pre >Active: active (running) since Mon 2018-04-02 10:30:23 EDT; 21h ago > Main PID: 5174 (cups-browsed) > Tasks: 3 (limit: 4915) >CGroup: /system.slice/cups-browsed.service >`-5174 /usr/sbin/cups-browsed > % LANG=C lpstat -t > scheduler is running > no system default destination > lpstat: No destinations added. > lpstat: No destinations added. > lpstat: No destinations added. > lpstat: No destinations added. Tentatively, this looks more like a cups-browsed issue. /etc/cups/cups-browsed should have a line "BrowseRemoteProtocols". Try uncommenting "LogDir /var/log/cups" and "DebugLogging file" and look at /var/log/cups/cups-browsed_log after restarting cups-browsed. Is the printer in there? Cheers, Brian.
Bug#894664: cups: Libreoffice doesn't see my network printer
>> I have a printer connected via USB to a local server (running Debian >> stable as well). This printer is made visible to my clients by >> running cups-browsed. > For the server to advertise its printers with DNS-SD cups-browsed is > superfluous. I expressed myself poorly: the cups-browsed is running on the client. > For most applications and command line programs cups-browsed has to be > running on the client; seeing nothing at localhost:631 implies it is > not. Please give the outputs of > > systemctl status cups-browsed > > and > > lpstat -t > > on the client. % LANG=C systemctl status cups-browsed * cups-browsed.service - Make remote CUPS printers available locally Loaded: loaded (/lib/systemd/system/cups-browsed.service; enabled; vendor pre Active: active (running) since Mon 2018-04-02 10:30:23 EDT; 21h ago Main PID: 5174 (cups-browsed) Tasks: 3 (limit: 4915) CGroup: /system.slice/cups-browsed.service `-5174 /usr/sbin/cups-browsed % LANG=C lpstat -t scheduler is running no system default destination lpstat: No destinations added. lpstat: No destinations added. lpstat: No destinations added. lpstat: No destinations added. % >> Yet, this somehow works: e.g. evince sees my network printer just fine. But >> Libreoffice doesn't. I haven't tried all applications to figure out which do >> and which don't, so maybe Libreoffice is not the only one affected. > > Evince can read the server's DNS-SD broadcasts directly; it doesn't need > cups-browsed. Libreoffice cannot read the server's DNS-SD broadcasts > directly. Good to know, thanks. Stefan
Bug#894664: cups: Libreoffice doesn't see my network printer
Thank you for your report, Stefan. On Mon 02 Apr 2018 at 23:15:18 -0400, Stefan Monnier wrote: > Package: cups > Version: 2.2.1-8+deb9u1 > Severity: normal > > Dear Maintainer, > > I have a printer connected via USB to a local server (running Debian stable as > well). This printer is made visible to my clients by running cups-browsed. For the server to advertise its printers with DNS-SD cups-browsed is superfluous. > My clients have no locally-configured printers (and hence no "default" > printer), and indeed when I go to "localhost:631" I don't see any printers > there. For most applications and command line programs cups-browsed has to be running on the client; seeing nothing at localhost:631 implies it is not. Please give the outputs of systemctl status cups-browsed and lpstat -t on the client. > Yet, this somehow works: e.g. evince sees my network printer just fine. But > Libreoffice doesn't. I haven't tried all applications to figure out which do > and which don't, so maybe Libreoffice is not the only one affected. Evince can read the server's DNS-SD broadcasts directly; it doesn't need cups-browsed. Libreoffice cannot read the server's DNS-SD broadcasts directly. > I've seen bug#867818 which seems related, but my `cups` is an older version > than the one that seems to be affected by that problem. > > I've also seen bug#772097, but that one seems older than mine (back around > that > time, cups-browsed would actually cause the network printer to appear in > /etc/cu0ps/printers.conf and in localhost:631 and Libreoffice could see it > fine > then). We'll put this on one side for the moment. Regards, Brian.
Bug#894664: cups: Libreoffice doesn't see my network printer
Package: cups Version: 2.2.1-8+deb9u1 Severity: normal Dear Maintainer, I have a printer connected via USB to a local server (running Debian stable as well). This printer is made visible to my clients by running cups-browsed. My clients have no locally-configured printers (and hence no "default" printer), and indeed when I go to "localhost:631" I don't see any printers there. Yet, this somehow works: e.g. evince sees my network printer just fine. But Libreoffice doesn't. I haven't tried all applications to figure out which do and which don't, so maybe Libreoffice is not the only one affected. I've seen bug#867818 which seems related, but my `cups` is an older version than the one that seems to be affected by that problem. I've also seen bug#772097, but that one seems older than mine (back around that time, cups-browsed would actually cause the network printer to appear in /etc/cu0ps/printers.conf and in localhost:631 and Libreoffice could see it fine then). -- System Information: Debian Release: 9.4 APT prefers stable APT policy: (990, 'stable') Architecture: i386 (i686) Kernel: Linux 4.9.0-3-686-pae (SMP w/4 CPU cores) Locale: LANG=fr_CH.UTF-8, LC_CTYPE=fr_CH.UTF-8 (charmap=UTF-8), LANGUAGE=fr_CH.UTF-8 (charmap=UTF-8) Shell: /bin/sh linked to /bin/dash Init: systemd (via /run/systemd/system) Versions of packages cups depends on: ii cups-client2.2.1-8+deb9u1 ii cups-common2.2.1-8+deb9u1 ii cups-core-drivers 2.2.1-8+deb9u1 ii cups-daemon2.2.1-8+deb9u1 ii cups-filters 1.11.6-3 ii cups-ppdc 2.2.1-8+deb9u1 ii cups-server-common 2.2.1-8+deb9u1 ii debconf [debconf-2.0] 1.5.61 ii ghostscript9.20~dfsg-3.2+deb9u1 ii libavahi-client3 0.6.32-2 ii libavahi-common3 0.6.32-2 ii libc-bin 2.24-11+deb9u3 ii libc6 2.24-11+deb9u3 ii libcups2 2.2.1-8+deb9u1 ii libcupscgi12.2.1-8+deb9u1 ii libcupsimage2 2.2.1-8+deb9u1 ii libcupsmime1 2.2.1-8+deb9u1 ii libcupsppdc1 2.2.1-8+deb9u1 ii libgcc11:6.3.0-18+deb9u1 ii libstdc++6 6.3.0-18+deb9u1 ii libusb-1.0-0 2:1.0.21-1 ii poppler-utils 0.48.0-2+deb9u2 ii procps 2:3.3.12-3 Versions of packages cups recommends: ii avahi-daemon 0.6.32-2 ii colord 1.3.3-2 ii cups-filters [ghostscript-cups] 1.11.6-3 pn printer-driver-gutenprint Versions of packages cups suggests: ii cups-bsd 2.2.1-8+deb9u1 pn foomatic-db-compressed-ppds | foomatic-db ii hplip 3.16.11+repack0-3 ii printer-driver-cups-pdf [cups-pdf] 2.6.1-22 ii printer-driver-hpcups 3.16.11+repack0-3 pn smbclient ii udev 232-25+deb9u2 -- Configuration Files: /etc/cups/cupsd.conf changed: LogLevel warn MaxLogSize 0 SystemGroup lpadmin Listen localhost:631 Listen /var/run/cups/cups.sock Browsing On BrowseLocalProtocols dnssd DefaultAuthType Basic WebInterface Yes Order allow,deny Order allow,deny AuthType Default Require user @SYSTEM Order allow,deny # Job/subscription privacy... JobPrivateAccess default JobPrivateValues default SubscriptionPrivateAccess default SubscriptionPrivateValues default # Job-related operations must be done by the owner or an administrator... Order deny,allow Require user @OWNER @SYSTEM Order deny,allow # All administration operations require an administrator to authenticate... AuthType Default Require user @SYSTEM Order deny,allow # All printer operations require a printer operator to authenticate... AuthType Default Require user @SYSTEM Order deny,allow # Only the owner or an administrator can cancel or authenticate a job... Require user @OWNER @SYSTEM Order deny,allow Order deny,allow # Job/subscription privacy... JobPrivateAccess default JobPrivateValues default SubscriptionPrivateAccess default SubscriptionPrivateValues default # Job-related operations must be done by the owner or an administrator... AuthType Default Order deny,allow AuthType Default Require user @OWNER @SYSTEM Order deny,allow # All administration operations require an administrator to authenticate... AuthType Default Require user @SYSTEM Order deny,allow # All printer operations require a printer operator to authenticate... AuthType Default Require user @SYSTEM Order deny,allow # Only the owner or an administrator can cancel or authenticate a job... AuthType Default Require user @OWNER @SYSTEM Order deny,allow Order deny,allow -- debconf information: cupsys/backend: lpd, socket, usb, snmp,
