no more network printer in 20.04

Well.. I wish this post is not in wrong section.

I can confirm print works with USB (20.04). looks like no problem on driver side.
Also, 18.04 don't have the password problem and can access to the workgroup printer, but can't finish the install (error message, "just can't").
All previous ubuntu version access the network printer nicely, on same or other machines.
I really need to update my system and access to this network printer.

So I have compare cups --debug from working config with 16.04 and 20.04, on my machine: I have opened systemconfigPrinter> "add" >networkprinter>search
For 16.04 :
it find the printer

Code:

working config with 16.04:~$ system-config-printer --debug +<newprinter.NewPrinterGUI object at 0x7fbee9cc5a20 (newprinter+NewPrinterGUI at 0x1e37000)> Connected as user kx16 +<printerproperties.PrinterPropertiesDialog object at 0x7fbee9ce1828 (printerproperties+PrinterPropertiesDialog at 0x1e77140)> <authconn.Connection object at 0x7fbf08cefeb8>: Operation += Récupération des informations de la file d'attente Authentication pass: 1 Authentication: password callback set Authentication pass: 1 Authentication: password callback set Authentication pass: 1 Authentication: password callback set <authconn.Connection object at 0x7fbf08cefeb8>: Operation ended +<ppdcache.PPDCache object at 0x7fbee9cf17b8> refresh Created subscription 4559, events=['printer-added', 'printer-modified', 'printer-deleted', 'printer-state-changed'] Next notifications fetch in 1s update_jobs Deferred populateList by 200ms Deferred populateList by 200ms Deferred populateList by 200ms <authconn.Connection object at 0x7fbf08cefeb8>: Operation += Récupération des informations de la file d'attente Authentication pass: 1 Authentication: password callback set Authentication pass: 1 Authentication: password callback set Authentication pass: 1 Authentication: password callback set <authconn.Connection object at 0x7fbf08cefeb8>: Operation ended get_notifications update_jobs Next notifications fetch in 60s Connected as user kx16 Authentication pass: 1 Authentication: password callback set Authentication pass: 1 Authentication: password callback set (system-config-printer.py:5700): Gtk-CRITICAL **: gtk_tree_store_insert_after: assertion 'G_NODE (sibling->user_data)->parent == G_NODE (parent->user_data)' failed (system-config-printer.py:5700): Gtk-CRITICAL **: gtk_tree_store_set_value: assertion 'VALID_ITER (iter, tree_store)' failed (system-config-printer.py:5700): Gtk-CRITICAL **: gtk_tree_store_set_value: assertion 'VALID_ITER (iter, tree_store)' failed Fetching devices Using polkit-1 connection class +<asyncipp._IPPAuthOperation object at 0x7fbee9cfabe0> New IPPConnection +<_IPPConnectionThread(Thread-1, initial daemon)> +<asyncipp.IPPAuthConnection object at 0x7fbee9cfab38> Awaiting further instructions Exception assessing DevicesGet API: DBusException('The name org.opensuse.CupsPkHelper.Mechanism was not provided by any .service files',) +<asyncpk1.PK1Connection object at 0x7fbee9cfa4a8> +<asyncconn.Connection object at 0x7fbee9cec6d8> fetchDevices +<asyncconn._AsyncMethodCall object at 0x7fbed3795e48> <asyncconn._AsyncMethodCall object at 0x7fbed3795e48>: calling <bound method PK1Connection.getDevices of <asyncpk1.PK1Connection object at 0x7fbee9cfa4a8>> Converted ()/{'auth_handler': <bound method _AsyncMethodCall.auth_handler of <asyncconn._AsyncMethodCall object at 0x7fbed3795e48>>, 'error_handler': <bound method _AsyncMethodCall.error_handler of <asyncconn._AsyncMethodCall object at 0x7fbed3795e48>>, 'reply_handler': <bound method _AsyncMethodCall.reply_handler of <asyncconn._AsyncMethodCall object at 0x7fbed3795e48>>, 'exclude_schemes': ['dnssd', 'snmp', 'bluetooth']} to (0, [], ['dnssd', 'snmp', 'bluetooth']) +_PK1AsyncMethodCall: <asyncpk1._PK1AsyncMethodCall object at 0x7fbed3795ef0> Calling PK method DevicesGet D-Bus call failed: DBusException('The name org.opensuse.CupsPkHelper.Mechanism was not provided by any .service files',) <asyncpk1._PK1AsyncMethodCall object at 0x7fbed3795ef0>: calling <function IPPConnection._make_binding.<locals>.<lambda> at 0x7fbee809a730> +<asyncipp._IPPAuthOperation object at 0x7fbed3795f98> Next task: (<method 'getDevices' of 'cups.Connection' objects>, (), {'exclude_schemes': ['dnssd', 'snmp', 'bluetooth']}, <bound method _PK1AsyncMethodCall._ipp_reply_handler of <asyncpk1._PK1AsyncMethodCall object at 0x7fbed3795ef0>>, <bound method _IPPAuthOperation.error_handler of <asyncipp._IPPAuthOperation object at 0x7fbed3795f98>>, <bound method _IPPAuthOperation.auth_handler of <asyncipp._IPPAuthOperation object at 0x7fbed3795f98>>) -<asyncipp._IPPAuthOperation object at 0x7fbee9cfabe0> Call <method 'getDevices' of 'cups.Connection' objects> ...success Awaiting further instructions <asyncpk1._PK1AsyncMethodCall object at 0x7fbed3795ef0>: chaining up to <bound method _AsyncMethodCall.reply_handler of <asyncconn._AsyncMethodCall object at 0x7fbed3795e48>> <asyncconn._AsyncMethodCall object at 0x7fbed3795e48>: to reply_handler at <bound method Connection._subst_reply_handler of <asyncconn.Connection object at 0x7fbee9cec6d8>> DESTROY: <asyncconn._AsyncMethodCall object at 0x7fbed3795e48> <asyncconn.Connection object at 0x7fbee9cec6d8>: chaining up to <bound method _GetDevicesCall._reply_handler of <cupshelpers.cupshelpers._GetDevicesCall object at 0x7fbed3795eb8>> fetchDevices +<asyncconn._AsyncMethodCall object at 0x7fbee80b51d0> <asyncconn._AsyncMethodCall object at 0x7fbee80b51d0>: calling <bound method PK1Connection.getDevices of <asyncpk1.PK1Connection object at 0x7fbee9cfa4a8>> Converted ()/{'auth_handler': <bound method _AsyncMethodCall.auth_handler of <asyncconn._AsyncMethodCall object at 0x7fbee80b51d0>>, 'error_handler': <bound method _AsyncMethodCall.error_handler of <asyncconn._AsyncMethodCall object at 0x7fbee80b51d0>>, 'reply_handler': <bound method _AsyncMethodCall.reply_handler of <asyncconn._AsyncMethodCall object at 0x7fbee80b51d0>>, 'include_schemes': ['dnssd', 'snmp', 'bluetooth']} to (0, ['dnssd', 'snmp', 'bluetooth'], []) +_PK1AsyncMethodCall: <asyncpk1._PK1AsyncMethodCall object at 0x7fbee80b5208> Calling PK method DevicesGet D-Bus call failed: DBusException('The name org.opensuse.CupsPkHelper.Mechanism was not provided by any .service files',) <asyncpk1._PK1AsyncMethodCall object at 0x7fbee80b5208>: calling <function IPPConnection._make_binding.<locals>.<lambda> at 0x7fbee809a730> +<asyncipp._IPPAuthOperation object at 0x7fbee80b5240> Next task: (<method 'getDevices' of 'cups.Connection' objects>, (), {'include_schemes': ['dnssd', 'snmp', 'bluetooth']}, <bound method _PK1AsyncMethodCall._ipp_reply_handler of <asyncpk1._PK1AsyncMethodCall object at 0x7fbee80b5208>>, <bound method _IPPAuthOperation.error_handler of <asyncipp._IPPAuthOperation object at 0x7fbee80b5240>>, <bound method _IPPAuthOperation.auth_handler of <asyncipp._IPPAuthOperation object at 0x7fbee80b5240>>) -<asyncipp._IPPAuthOperation object at 0x7fbed3795f98> Call <method 'getDevices' of 'cups.Connection' objects> DESTROY: <asyncpk1._PK1AsyncMethodCall object at 0x7fbed3795ef0> -<asyncconn._AsyncMethodCall object at 0x7fbed3795e48> -_PK1AsyncMethodCall: <asyncpk1._PK1AsyncMethodCall object at 0x7fbed3795ef0> ...success Awaiting further instructions <asyncpk1._PK1AsyncMethodCall object at 0x7fbee80b5208>: chaining up to <bound method _AsyncMethodCall.reply_handler of <asyncconn._AsyncMethodCall object at 0x7fbee80b51d0>> <asyncconn._AsyncMethodCall object at 0x7fbee80b51d0>: to reply_handler at <bound method Connection._subst_reply_handler of <asyncconn.Connection object at 0x7fbee9cec6d8>> DESTROY: <asyncconn._AsyncMethodCall object at 0x7fbee80b51d0> <asyncconn.Connection object at 0x7fbee9cec6d8>: chaining up to <bound method _GetDevicesCall._reply_handler of <cupshelpers.cupshelpers._GetDevicesCall object at 0x7fbee80b5198>> DESTROY: <asyncconn.Connection object at 0x7fbee9cec6d8> DESTROY: <asyncpk1.PK1Connection object at 0x7fbee9cfa4a8> DESTROY: <asyncipp.IPPAuthConnection object at 0x7fbee9cfab38> Stopping worker thread Next task: None Thread exiting -<asyncipp._IPPAuthOperation object at 0x7fbee80b5240> -<asyncconn.Connection object at 0x7fbee9cec6d8> DESTROY: <asyncpk1._PK1AsyncMethodCall object at 0x7fbee80b5208> -<asyncconn._AsyncMethodCall object at 0x7fbee80b51d0> -<asyncpk1.PK1Connection object at 0x7fbee9cfa4a8> -_PK1AsyncMethodCall: <asyncpk1._PK1AsyncMethodCall object at 0x7fbee80b5208> No firewall Examining firewall <firewallsettings.SystemConfigFirewall object at 0x7fbee9ce2518> in _get_fw_data: _fw_data is (None, None) Using cached firewall data <firewallsettings.SystemConfigFirewall object at 0x7fbee9ce2518> in _get_fw_data: _fw_data is (None, None) Using cached firewall data <firewallsettings.SystemConfigFirewall object at 0x7fbee9ce2518> in _get_fw_data: _fw_data is (None, None) Using cached firewall data Firewall all OK, no changes needed -<asyncipp.IPPAuthConnection object at 0x7fbee9cfab38> -<_IPPConnectionThread(Thread-1, stopped daemon 140457940424448)> Calling <bound method PrinterFinder._do_find of <probe_printer.PrinterFinder object at 0x7fbeebb27668>> hplip: trying hplip: no good (return code 1) jetdirect: trying jetdirect: mafreebox.freebox.fr:9100 CLOSED jetdirect: done ipp: trying ipp: can't connect to server/printer ipp: no good snmp: trying snmp: done lpd: trying lpd: couldn't connect lpd: done INFO: Current debug levels: all: 10 tdb: 10 printdrivers: 10 lanman: 10 smb: 10 rpc_parse: 10 rpc_srv: 10 rpc_cli: 10 passdb: 10 sam: 10 auth: 10 winbind: 10 vfs: 10 idmap: 10 quota: 10 acls: 10 locking: 10 msdfs: 10 dmapi: 10 registry: 10 scavenger: 10 dns: 10 ldb: 10 tevent: 10 Using netbios name DDX-STUDIO. Using workgroup WORKGROUP. smb: trying parsed path: fname='smb://mafreebox.freebox.fr/' server='mafreebox.freebox.fr' share='' path='' options='' SMBC_check_options(): server='mafreebox.freebox.fr' share='' path='' options='' pysmb: got password callback lp_load_ex: refreshing parameters Freeing parametrics: Initialising global parameters rlimit_max: increasing rlimit_max (1024) to minimum Windows limit (16384) INFO: Current debug levels: all: 10 tdb: 10 printdrivers: 10 lanman: 10 smb: 10 rpc_parse: 10 rpc_srv: 10 rpc_cli: 10 passdb: 10 sam: 10 auth: 10 winbind: 10 vfs: 10 idmap: 10 quota: 10 acls: 10 locking: 10 msdfs: 10 dmapi: 10 registry: 10 scavenger: 10 dns: 10 ldb: 10 tevent: 10 Processing section "[global]" doing parameter preferred master = no doing parameter local master = no doing parameter domain master = no doing parameter client lanman auth = yes doing parameter lanman auth = yes doing parameter socket options = TCP_NODELAY IPTOS_LOWDELAY SO_RCVBUF=65536 SO_SNDBUF=65536 doing parameter lock directory = /home/kx16/.smb/ doing parameter name resolve order = bcast host pm_process() returned Yes lp_servicenumber: couldn't find homes added interface enp0s7 ip=2a01:e0a:426:a2f0::edd2:6f54 bcast= netmask=ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff added interface enp0s7 ip=192.168.0.10 bcast=192.168.0.255 netmask=255.255.255.0 pysmb: got password callback Device found: smb://mafreebox.freebox.fr/Brother%20DCP-J752DW smb: done Done get_notifications update_jobs Next notifications fetch in 60s get_notifications update_jobs Next notifications fetch in 60s INFO: Current debug levels: all: 10 tdb: 10 printdrivers: 10 lanman: 10 smb: 10 rpc_parse: 10 rpc_srv: 10 rpc_cli: 10 passdb: 10 sam: 10 auth: 10 winbind: 10 vfs: 10 idmap: 10 quota: 10 acls: 10 locking: 10 msdfs: 10 dmapi: 10 registry: 10 scavenger: 10 dns: 10 ldb: 10 tevent: 10 Using netbios name DDX-STUDIO. Using workgroup WORKGROUP. pysmb: got password callback lp_load_ex: refreshing parameters Freeing parametrics: Initialising global parameters rlimit_max: increasing rlimit_max (1024) to minimum Windows limit (16384) INFO: Current debug levels: all: 10 tdb: 10 printdrivers: 10 lanman: 10 smb: 10 rpc_parse: 10 rpc_srv: 10 rpc_cli: 10 passdb: 10 sam: 10 auth: 10 winbind: 10 vfs: 10 idmap: 10 quota: 10 acls: 10 locking: 10 msdfs: 10 dmapi: 10 registry: 10 scavenger: 10 dns: 10 ldb: 10 tevent: 10 Processing section "[global]" doing parameter preferred master = no doing parameter local master = no doing parameter domain master = no doing parameter client lanman auth = yes doing parameter lanman auth = yes doing parameter socket options = TCP_NODELAY IPTOS_LOWDELAY SO_RCVBUF=65536 SO_SNDBUF=65536 doing parameter lock directory = /home/kx16/.smb/ doing parameter name resolve order = bcast host pm_process() returned Yes lp_servicenumber: couldn't find homes added interface enp0s7 ip=2a01:e0a:426:a2f0::edd2:6f54 bcast= netmask=ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff added interface enp0s7 ip=192.168.0.10 bcast=192.168.0.255 netmask=255.255.255.0 get_notifications update_jobs Next notifications fetch in 60s ^CTraceback (most recent call last): File "/usr/share/system-config-printer/newprinter.py", line 2922, in device_row_separator_fn def device_row_separator_fn (self, model, iter, data):

For 20.04:
it block asking password to access workgroup

Code:

20.04:~$ system-config-printer --debug /usr/share/system-config-printer/system-config-printer.py:315: DeprecationWarning: Gtk.ActionGroup.list_actions is deprecated for action in printer_manager_action_group.list_actions (): /usr/share/system-config-printer/system-config-printer.py:316: DeprecationWarning: Gtk.Action.set_sensitive is deprecated action.set_sensitive (False) /usr/share/system-config-printer/system-config-printer.py:324: DeprecationWarning: Gtk.ActionGroup.get_action is deprecated act = printer_manager_action_group.get_action (action) /usr/share/system-config-printer/system-config-printer.py:354: DeprecationWarning: Gtk.UIManager.ensure_update is deprecated self.ui_manager.ensure_update () /usr/share/system-config-printer/system-config-printer.py:355: DeprecationWarning: Gtk.UIManager.get_accel_group is deprecated self.PrintersWindow.add_accel_group (self.ui_manager.get_accel_group ()) /usr/share/system-config-printer/system-config-printer.py:364: DeprecationWarning: Gtk.UIManager.get_action is deprecated action = self.ui_manager.get_action ("/new-printer") /usr/share/system-config-printer/system-config-printer.py:365: DeprecationWarning: Gtk.Action.create_menu_item is deprecated newprinteritem = action.create_menu_item () +<newprinter.NewPrinterGUI object at 0x7f05cb609100 (newprinter+NewPrinterGUI at 0x2f9d900)> Connected as user kx20 /usr/share/system-config-printer/system-config-printer.py:663: DeprecationWarning: Gtk.Action.get_proxies is deprecated for widget in action.get_proxies (): +<printerproperties.PrinterPropertiesDialog object at 0x7f05c8332240 (printerproperties+PrinterPropertiesDialog at 0x2fd24c0)> <authconn.Connection object at 0x7f05d097a400>: Operation += Récupération des informations de la file d'attente Authentication pass: 1 Authentication: password callback set Authentication pass: 1 Authentication: password callback set Authentication pass: 1 Authentication: password callback set <authconn.Connection object at 0x7f05d097a400>: Operation ended /usr/share/system-config-printer/system-config-printer.py:976: DeprecationWarning: urllib.parse.splittype() is deprecated as of 3.8, use urllib.parse.urlparse() instead (scheme, rest) = urllib.parse.splittype (object.device_uri) +<ppdcache.PPDCache object at 0x7f05c832dbb0> /usr/share/system-config-printer/system-config-printer.py:2236: DeprecationWarning: Gdk.threads_enter is deprecated Gdk.threads_enter () refresh Created subscription 79, events=['printer-added', 'printer-modified', 'printer-deleted', 'printer-state-changed'] Next notifications fetch in 1s update_jobs Deferred populateList by 200ms Deferred populateList by 200ms Deferred populateList by 200ms Deferred populateList by 200ms <authconn.Connection object at 0x7f05d097a400>: Operation += Récupération des informations de la file d'attente Authentication pass: 1 Authentication: password callback set Authentication pass: 1 Authentication: password callback set Authentication pass: 1 Authentication: password callback set <authconn.Connection object at 0x7f05d097a400>: Operation ended /usr/share/system-config-printer/system-config-printer.py:2187: DeprecationWarning: Gdk.threads_leave is deprecated Gdk.threads_leave () get_notifications update_jobs Next notifications fetch in 60s Connected as user kx20 Authentication pass: 1 Authentication: password callback set Authentication pass: 1 Authentication: password callback set Device added to physical device: <PhysicalDevice.PhysicalDevice (,,,None,None,)> Device network added to physical device: <PhysicalDevice.PhysicalDevice (,,,None,None,network)> Device smb added to physical device: <PhysicalDevice.PhysicalDevice (,,,None,None,smb)> Selected connection type. URI: Fetching devices Using polkit-1 connection class +<asyncipp._IPPAuthOperation object at 0x7f05c835bdc0> New IPPConnection +<_IPPConnectionThread(Thread-1, initial daemon)> +<asyncipp.IPPAuthConnection object at 0x7f05c835bfd0> Awaiting further instructions DevicesGet new API: True +<asyncpk1.PK1Connection object at 0x7f05c835bee0> +<asyncconn.Connection object at 0x7f05c835bf10> fetchDevices +<asyncconn._AsyncMethodCall object at 0x7f05cb59b640> <asyncconn._AsyncMethodCall object at 0x7f05cb59b640>: calling <bound method PK1Connection.getDevices of <asyncpk1.PK1Connection object at 0x7f05c835bee0>> Converted ()/{'exclude_schemes': ['dnssd', 'snmp', 'driverless', 'bjnp', 'bluetooth'], 'reply_handler': <bound method _AsyncMethodCall.reply_handler of <asyncconn._AsyncMethodCall object at 0x7f05cb59b640>>, 'error_handler': <bound method _AsyncMethodCall.error_handler of <asyncconn._AsyncMethodCall object at 0x7f05cb59b640>>, 'auth_handler': <bound method _AsyncMethodCall.auth_handler of <asyncconn._AsyncMethodCall object at 0x7f05cb59b640>>} to (0, 0, [], ['dnssd', 'snmp', 'driverless', 'bjnp', 'bluetooth']) +_PK1AsyncMethodCall: <asyncpk1._PK1AsyncMethodCall object at 0x7f05cb59b670> Calling PK method DevicesGet <asyncpk1._PK1AsyncMethodCall object at 0x7f05cb59b670>: calling <dbus.proxies._DeferredMethod object at 0x7f05cb59b850> <asyncpk1._PK1AsyncMethodCall object at 0x7f05cb59b670>: no error, calling reply handler <bound method _AsyncMethodCall.reply_handler of <asyncconn._AsyncMethodCall object at 0x7f05cb59b640>> <asyncconn._AsyncMethodCall object at 0x7f05cb59b640>: to reply_handler at <bound method Connection._subst_reply_handler of <asyncconn.Connection object at 0x7f05c835bf10>> DESTROY: <asyncconn._AsyncMethodCall object at 0x7f05cb59b640> <asyncconn.Connection object at 0x7f05c835bf10>: chaining up to <bound method _GetDevicesCall._reply_handler of <cupshelpers.cupshelpers._GetDevicesCall object at 0x7f05cb59b5e0>> fetchDevices +<asyncconn._AsyncMethodCall object at 0x7f05cb59ba90> <asyncconn._AsyncMethodCall object at 0x7f05cb59ba90>: calling <bound method PK1Connection.getDevices of <asyncpk1.PK1Connection object at 0x7f05c835bee0>> Converted ()/{'include_schemes': ['dnssd', 'snmp', 'driverless', 'bjnp', 'bluetooth'], 'reply_handler': <bound method _AsyncMethodCall.reply_handler of <asyncconn._AsyncMethodCall object at 0x7f05cb59ba90>>, 'error_handler': <bound method _AsyncMethodCall.error_handler of <asyncconn._AsyncMethodCall object at 0x7f05cb59ba90>>, 'auth_handler': <bound method _AsyncMethodCall.auth_handler of <asyncconn._AsyncMethodCall object at 0x7f05cb59ba90>>} to (0, 0, ['dnssd', 'snmp', 'driverless', 'bjnp', 'bluetooth'], []) +_PK1AsyncMethodCall: <asyncpk1._PK1AsyncMethodCall object at 0x7f05cb59bac0> Calling PK method DevicesGet <asyncpk1._PK1AsyncMethodCall object at 0x7f05cb59bac0>: calling <dbus.proxies._DeferredMethod object at 0x7f05cb59bca0> Adding device with URI ipp Device ipp added to physical device: <PhysicalDevice.PhysicalDevice (,,,None,None,ipp)> Created physical device <PhysicalDevice.PhysicalDevice (,,,None,None,ipp)> Physical device <PhysicalDevice.PhysicalDevice (,,,None,None,ipp)> is a completely new device Adding device with URI lpd Device lpd added to physical device: <PhysicalDevice.PhysicalDevice (,,,None,None,lpd)> Created physical device <PhysicalDevice.PhysicalDevice (,,,None,None,lpd)> Physical device <PhysicalDevice.PhysicalDevice (,,,None,None,lpd)> is a completely new device Adding device with URI ipps Device ipps added to physical device: <PhysicalDevice.PhysicalDevice (,,,None,None,ipps)> Created physical device <PhysicalDevice.PhysicalDevice (,,,None,None,ipps)> Physical device <PhysicalDevice.PhysicalDevice (,,,None,None,ipps)> is a completely new device Adding device with URI cups-brf:/ Device cups-brf:/ added to physical device: <PhysicalDevice.PhysicalDevice (Generic,CUPS-BRF,,None,None,cups-brf:/)> Created physical device <PhysicalDevice.PhysicalDevice (Generic,CUPS-BRF,,None,None,cups-brf:/)> Physical device <PhysicalDevice.PhysicalDevice (Generic,CUPS-BRF,,None,None,cups-brf:/)> is a completely new device Adding device with URI https Device https added to physical device: <PhysicalDevice.PhysicalDevice (,,,None,None,https)> Created physical device <PhysicalDevice.PhysicalDevice (,,,None,None,https)> Physical device <PhysicalDevice.PhysicalDevice (,,,None,None,https)> is a completely new device Adding device with URI socket Device socket added to physical device: <PhysicalDevice.PhysicalDevice (,,,None,None,socket)> Created physical device <PhysicalDevice.PhysicalDevice (,,,None,None,socket)> Physical device <PhysicalDevice.PhysicalDevice (,,,None,None,socket)> is a completely new device DESTROY: <asyncpk1._PK1AsyncMethodCall object at 0x7f05cb59b670> -<asyncconn._AsyncMethodCall object at 0x7f05cb59b640> -_PK1AsyncMethodCall: <asyncpk1._PK1AsyncMethodCall object at 0x7f05cb59b670> <asyncpk1._PK1AsyncMethodCall object at 0x7f05cb59bac0>: no error, calling reply handler <bound method _AsyncMethodCall.reply_handler of <asyncconn._AsyncMethodCall object at 0x7f05cb59ba90>> <asyncconn._AsyncMethodCall object at 0x7f05cb59ba90>: to reply_handler at <bound method Connection._subst_reply_handler of <asyncconn.Connection object at 0x7f05c835bf10>> DESTROY: <asyncconn._AsyncMethodCall object at 0x7f05cb59ba90> <asyncconn.Connection object at 0x7f05c835bf10>: chaining up to <bound method _GetDevicesCall._reply_handler of <cupshelpers.cupshelpers._GetDevicesCall object at 0x7f05cb59ba30>> DESTROY: <asyncconn.Connection object at 0x7f05c835bf10> DESTROY: <asyncpk1.PK1Connection object at 0x7f05c835bee0> DESTROY: <asyncipp.IPPAuthConnection object at 0x7f05c835bfd0> Stopping worker thread Next task: None Thread exiting -<asyncipp._IPPAuthOperation object at 0x7f05c835bdc0> -<asyncconn.Connection object at 0x7f05c835bf10> DESTROY: <asyncpk1._PK1AsyncMethodCall object at 0x7f05cb59bac0> -<asyncconn._AsyncMethodCall object at 0x7f05cb59ba90> -<asyncpk1.PK1Connection object at 0x7f05c835bee0> -_PK1AsyncMethodCall: <asyncpk1._PK1AsyncMethodCall object at 0x7f05cb59bac0> -<asyncipp.IPPAuthConnection object at 0x7f05c835bfd0> -<_IPPConnectionThread(Thread-1, stopped daemon 139662828361472)> No firewall Examining firewall <firewallsettings.SystemConfigFirewall object at 0x7f05cb57b850> in _get_fw_data: _fw_data is (None, None) Using cached firewall data <firewallsettings.SystemConfigFirewall object at 0x7f05cb57b850> in _get_fw_data: _fw_data is (None, None) Using cached firewall data <firewallsettings.SystemConfigFirewall object at 0x7f05cb57b850> in _get_fw_data: _fw_data is (None, None) Using cached firewall data Firewall all OK, no changes needed Selected connection type. URI: network Calling <bound method PrinterFinder._do_find of <probe_printer.PrinterFinder object at 0x7f05c834a310>> hplip: trying hplip: no good (return code 1) jetdirect: trying jetdirect: :9100 CLOSED jetdirect: done ipp: trying ipp: can't resolve ipp: no good snmp: trying snmp: done lpd: trying lpd: couldn't connect lpd: done INFO: Current debug levels: all: 10 tdb: 10 printdrivers: 10 lanman: 10 smb: 10 rpc_parse: 10 rpc_srv: 10 rpc_cli: 10 passdb: 10 sam: 10 auth: 10 winbind: 10 vfs: 10 idmap: 10 quota: 10 acls: 10 locking: 10 msdfs: 10 dmapi: 10 registry: 10 scavenger: 10 dns: 10 ldb: 10 tevent: 10 auth_audit: 10 auth_json_audit: 10 kerberos: 10 drs_repl: 10 smb2: 10 smb2_credits: 10 dsdb_audit: 10 dsdb_json_audit: 10 dsdb_password_audit: 10 dsdb_password_json_audit: 10 dsdb_transaction_audit: 10 dsdb_transaction_json_audit: 10 dsdb_group_audit: 10 dsdb_group_json_audit: 10 Using netbios name STUDIO20. Using workgroup WORKGROUP. smb: trying parsed path: fname='smb:///' server='WORKGROUP' share='' path='' options='' SMBC_check_options(): server='WORKGROUP' share='' path='' options='' pysmb: got password callback lp_load_ex: refreshing parameters Freeing parametrics: Initialising global parameters rlimit_max: increasing rlimit_max (1024) to minimum Windows limit (16384) INFO: Current debug levels: all: 10 tdb: 10 printdrivers: 10 lanman: 10 smb: 10 rpc_parse: 10 rpc_srv: 10 rpc_cli: 10 passdb: 10 sam: 10 auth: 10 winbind: 10 vfs: 10 idmap: 10 quota: 10 acls: 10 locking: 10 msdfs: 10 dmapi: 10 registry: 10 scavenger: 10 dns: 10 ldb: 10 tevent: 10 auth_audit: 10 auth_json_audit: 10 kerberos: 10 drs_repl: 10 smb2: 10 smb2_credits: 10 dsdb_audit: 10 dsdb_json_audit: 10 dsdb_password_audit: 10 dsdb_password_json_audit: 10 dsdb_transaction_audit: 10 dsdb_transaction_json_audit: 10 dsdb_group_audit: 10 dsdb_group_json_audit: 10 pm_process() returned No lp_servicenumber: couldn't find homes Could not load config file: /home/kx20/.smb/smb.conf lp_load_ex: refreshing parameters Freeing parametrics: Initialising global parameters rlimit_max: increasing rlimit_max (1024) to minimum Windows limit (16384) INFO: Current debug levels: all: 10 tdb: 10 printdrivers: 10 lanman: 10 smb: 10 rpc_parse: 10 rpc_srv: 10 rpc_cli: 10 passdb: 10 sam: 10 auth: 10 winbind: 10 vfs: 10 idmap: 10 quota: 10 acls: 10 locking: 10 msdfs: 10 dmapi: 10 registry: 10 scavenger: 10 dns: 10 ldb: 10 tevent: 10 auth_audit: 10 auth_json_audit: 10 kerberos: 10 drs_repl: 10 smb2: 10 smb2_credits: 10 dsdb_audit: 10 dsdb_json_audit: 10 dsdb_password_audit: 10 dsdb_password_json_audit: 10 dsdb_transaction_audit: 10 dsdb_transaction_json_audit: 10 dsdb_group_audit: 10 dsdb_group_json_audit: 10 Processing section "[global]" doing parameter workgroup = WORKGROUP doing parameter server string = %h server (Samba, Ubuntu) doing parameter log file = /var/log/samba/log.%m doing parameter max log size = 1000 doing parameter logging = file doing parameter panic action = /usr/share/samba/panic-action %d doing parameter server role = standalone server doing parameter obey pam restrictions = yes doing parameter unix password sync = yes doing parameter passwd program = /usr/bin/passwd %u doing parameter passwd chat = *Enter\snew\s*\spassword:* %n\n *Retype\snew\s*\spassword:* %n\n *password\supdated\ssuccessfully* . doing parameter pam password change = yes doing parameter map to guest = bad user doing parameter usershare allow guests = yes pm_process() returned Yes lp_servicenumber: couldn't find homes lp_load_ex: refreshing parameters Freeing parametrics: INFO: Current debug levels: all: 10 tdb: 10 printdrivers: 10 lanman: 10 smb: 10 rpc_parse: 10 rpc_srv: 10 rpc_cli: 10 passdb: 10 sam: 10 auth: 10 winbind: 10 vfs: 10 idmap: 10 quota: 10 acls: 10 locking: 10 msdfs: 10 dmapi: 10 registry: 10 scavenger: 10 dns: 10 ldb: 10 tevent: 10 auth_audit: 10 auth_json_audit: 10 kerberos: 10 drs_repl: 10 smb2: 10 smb2_credits: 10 dsdb_audit: 10 dsdb_json_audit: 10 dsdb_password_audit: 10 dsdb_password_json_audit: 10 dsdb_transaction_audit: 10 dsdb_transaction_json_audit: 10 dsdb_group_audit: 10 dsdb_group_json_audit: 10 pm_process() returned No lp_servicenumber: couldn't find homes Could not append config file: /home/kx20/.smb/smb.conf.append added interface enp0s7 ip=192.168.0.10 bcast=192.168.0.255 netmask=255.255.255.0 INFO: Current debug levels: all: 10 tdb: 10 printdrivers: 10 lanman: 10 smb: 10 rpc_parse: 10 rpc_srv: 10 rpc_cli: 10 passdb: 10 sam: 10 auth: 10 winbind: 10 vfs: 10 idmap: 10 quota: 10 acls: 10 locking: 10 msdfs: 10 dmapi: 10 registry: 10 scavenger: 10 dns: 10 ldb: 10 tevent: 10 auth_audit: 10 auth_json_audit: 10 kerberos: 10 drs_repl: 10 smb2: 10 smb2_credits: 10 dsdb_audit: 10 dsdb_json_audit: 10 dsdb_password_audit: 10 dsdb_password_json_audit: 10 dsdb_transaction_audit: 10 dsdb_transaction_json_audit: 10 dsdb_group_audit: 10 dsdb_group_json_audit: 10 pysmb: operation failed: ConnectionRefusedError(111, 'Connexion refusée') pysmb: authentication pass: 2 pysmb: try auth as guest pysmb: got password callback pysmb: operation failed: ConnectionRefusedError(111, 'Connexion refusée') pysmb: authentication pass: 3 pysmb: try as kx20 get_notifications update_jobs Next notifications fetch in 60s

I think I will make a bug report for pysmb .