CUPS & Raspbian - A impressora liga mas não imprime

Question

Eu sou novo na troca do UNIX ...

Eu tenho configurado um servidor de impressão doméstico em meu pi de framboesa usando o CUPS.

Consegui fazê-lo funcionar com uma das minhas impressoras, mas não com uma impressora a laser antiga: a Samsung ML-1520. Quando imprimo uma página de teste, ela funciona bem e imprime corretamente, mas não imprime um documento do Word (1 página). Quando envio a ordem de impressão, a impressora gira como se houvesse um trabalho, mas depois pára sem imprimir.

Estou tendo problemas para entender as informações de depuração, por isso, se você tiver alguma ideia, isso será muito apreciado.

O seguinte é um formulário de registro logo antes de uma solicitação de impressão após uma solicitação de impressão. - > Ele girou, mas não imprimiu nada.

Este é o registro de depuração:

pi@raspberrypi ~ $ tail -f /var/log/cups/error_log
D [04/Sep/2015:21:27:16 +0000] cupsdNetIFUpdate: "lo" = localhost:631
D [04/Sep/2015:21:27:16 +0000] cupsdNetIFUpdate: "eth0" = 192.168.0.64:631
D [04/Sep/2015:21:27:16 +0000] Report: clients=9
D [04/Sep/2015:21:27:16 +0000] Report: jobs=17
D [04/Sep/2015:21:27:16 +0000] Report: jobs-active=0
D [04/Sep/2015:21:27:16 +0000] Report: printers=2
D [04/Sep/2015:21:27:16 +0000] Report: printers-implicit=0
D [04/Sep/2015:21:27:16 +0000] Report: stringpool-string-count=10340
D [04/Sep/2015:21:27:16 +0000] Report: stringpool-alloc-bytes=10360
D [04/Sep/2015:21:27:16 +0000] Report: stringpool-total-bytes=189176
D [04/Sep/2015:21:27:43 +0000] cupsdReadClient: 15 WAITING Closing on EOF
D [04/Sep/2015:21:27:43 +0000] cupsdCloseClient: 15
D [04/Sep/2015:21:27:43 +0000] cupsdSetBusyState: newbusy="Not busy", busy="Not busy"
D [04/Sep/2015:21:27:43 +0000] cupsdReadClient: 16 WAITING Closing on EOF
D [04/Sep/2015:21:27:43 +0000] cupsdCloseClient: 16
D [04/Sep/2015:21:27:43 +0000] cupsdSetBusyState: newbusy="Not busy", busy="Not busy"
D [04/Sep/2015:21:27:43 +0000] cupsdReadClient: 18 WAITING Closing on EOF
D [04/Sep/2015:21:27:43 +0000] cupsdCloseClient: 18
D [04/Sep/2015:21:27:43 +0000] cupsdSetBusyState: newbusy="Not busy", busy="Not busy"
D [04/Sep/2015:21:27:43 +0000] cupsdReadClient: 19 WAITING Closing on EOF
D [04/Sep/2015:21:27:43 +0000] cupsdCloseClient: 19
D [04/Sep/2015:21:27:43 +0000] cupsdSetBusyState: newbusy="Not busy", busy="Not busy"
D [04/Sep/2015:21:27:43 +0000] cupsdReadClient: 20 WAITING Closing on EOF
D [04/Sep/2015:21:27:43 +0000] cupsdCloseClient: 20
D [04/Sep/2015:21:27:43 +0000] cupsdSetBusyState: newbusy="Not busy", busy="Not busy"
D [04/Sep/2015:21:27:43 +0000] cupsdReadClient: 21 WAITING Closing on EOF
D [04/Sep/2015:21:27:43 +0000] cupsdCloseClient: 21
D [04/Sep/2015:21:27:43 +0000] cupsdSetBusyState: newbusy="Not busy", busy="Not busy"
D [04/Sep/2015:21:27:43 +0000] cupsdReadClient: 22 WAITING Closing on EOF
D [04/Sep/2015:21:27:43 +0000] cupsdCloseClient: 22
D [04/Sep/2015:21:27:43 +0000] cupsdSetBusyState: newbusy="Not busy", busy="Not busy"
D [04/Sep/2015:21:27:43 +0000] cupsdReadClient: 23 WAITING Closing on EOF
D [04/Sep/2015:21:27:43 +0000] cupsdCloseClient: 23
D [04/Sep/2015:21:27:43 +0000] cupsdSetBusyState: newbusy="Not busy", busy="Not busy"
D [04/Sep/2015:21:28:18 +0000] cupsdNetIFUpdate: "lo" = localhost:631
D [04/Sep/2015:21:28:18 +0000] cupsdNetIFUpdate: "eth0" = 192.168.0.64:631
D [04/Sep/2015:21:28:18 +0000] Report: clients=1
D [04/Sep/2015:21:28:18 +0000] Report: jobs=17
D [04/Sep/2015:21:28:18 +0000] Report: jobs-active=0
D [04/Sep/2015:21:28:18 +0000] Report: printers=2
D [04/Sep/2015:21:28:18 +0000] Report: printers-implicit=0
D [04/Sep/2015:21:28:18 +0000] Report: stringpool-string-count=10340
D [04/Sep/2015:21:28:18 +0000] Report: stringpool-alloc-bytes=10360
D [04/Sep/2015:21:28:18 +0000] Report: stringpool-total-bytes=189176
D [04/Sep/2015:21:28:31 +0000] cupsdAcceptClient: 15 from 192.168.0.100:631 (IPv4)
D [04/Sep/2015:21:28:31 +0000] cupsdReadClient: 15 POST /printers/Samsung_ML-1520 HTTP/1.1
D [04/Sep/2015:21:28:31 +0000] cupsdSetBusyState: newbusy="Active clients", busy="Not busy"
D [04/Sep/2015:21:28:31 +0000] cupsdAuthorize: No authentication data provided.
D [04/Sep/2015:21:28:31 +0000] cupsdReadClient: 15 1.0 Get-Printer-Attributes 11
D [04/Sep/2015:21:28:31 +0000] Get-Printer-Attributes http://192.168.0.64:631/printers/Samsung_ML-1520
D [04/Sep/2015:21:28:31 +0000] Returning IPP successful-ok for Get-Printer-Attributes (http://192.168.0.64:631/printers/Samsung_ML-1520) from 192.168.0.100
D [04/Sep/2015:21:28:31 +0000] cupsdSetBusyState: newbusy="Not busy", busy="Active clients"
D [04/Sep/2015:21:28:32 +0000] cupsdAcceptClient: 16 from 192.168.0.100:631 (IPv4)
D [04/Sep/2015:21:28:32 +0000] cupsdReadClient: 16 POST /printers/Samsung_ML-1520 HTTP/1.1
D [04/Sep/2015:21:28:32 +0000] cupsdSetBusyState: newbusy="Active clients", busy="Not busy"
D [04/Sep/2015:21:28:32 +0000] cupsdAuthorize: No authentication data provided.
D [04/Sep/2015:21:28:32 +0000] cupsdReadClient: 16 1.0 Get-Printer-Attributes 11
D [04/Sep/2015:21:28:32 +0000] Get-Printer-Attributes http://192.168.0.64:631/printers/Samsung_ML-1520
D [04/Sep/2015:21:28:32 +0000] Returning IPP successful-ok for Get-Printer-Attributes (http://192.168.0.64:631/printers/Samsung_ML-1520) from 192.168.0.100
D [04/Sep/2015:21:28:32 +0000] cupsdSetBusyState: newbusy="Not busy", busy="Active clients"
D [04/Sep/2015:21:28:32 +0000] cupsdAcceptClient: 18 from 192.168.0.100:631 (IPv4)
D [04/Sep/2015:21:28:32 +0000] cupsdReadClient: 18 POST /printers/Samsung_ML-1520 HTTP/1.1
D [04/Sep/2015:21:28:32 +0000] cupsdSetBusyState: newbusy="Active clients", busy="Not busy"
D [04/Sep/2015:21:28:32 +0000] cupsdAuthorize: No authentication data provided.
D [04/Sep/2015:21:28:32 +0000] cupsdReadClient: 18 1.0 Get-Printer-Attributes 11
D [04/Sep/2015:21:28:32 +0000] Get-Printer-Attributes http://192.168.0.64:631/printers/Samsung_ML-1520
D [04/Sep/2015:21:28:32 +0000] Returning IPP successful-ok for Get-Printer-Attributes (http://192.168.0.64:631/printers/Samsung_ML-1520) from 192.168.0.100
D [04/Sep/2015:21:28:32 +0000] cupsdSetBusyState: newbusy="Not busy", busy="Active clients"
D [04/Sep/2015:21:28:33 +0000] cupsdAcceptClient: 19 from 192.168.0.100:631 (IPv4)
D [04/Sep/2015:21:28:33 +0000] cupsdReadClient: 19 POST /printers/Samsung_ML-1520 HTTP/1.1
D [04/Sep/2015:21:28:33 +0000] cupsdSetBusyState: newbusy="Active clients", busy="Not busy"
D [04/Sep/2015:21:28:33 +0000] cupsdAuthorize: No authentication data provided.
D [04/Sep/2015:21:28:33 +0000] cupsdReadClient: 19 1.0 Get-Jobs 10
D [04/Sep/2015:21:28:33 +0000] Get-Jobs http://192.168.0.64:631/printers/Samsung_ML-1520
D [04/Sep/2015:21:28:33 +0000] Returning IPP successful-ok for Get-Jobs (http://192.168.0.64:631/printers/Samsung_ML-1520) from 192.168.0.100
D [04/Sep/2015:21:28:33 +0000] cupsdSetBusyState: newbusy="Not busy", busy="Active clients"
D [04/Sep/2015:21:28:33 +0000] cupsdAcceptClient: 20 from 192.168.0.100:631 (IPv4)
D [04/Sep/2015:21:28:33 +0000] cupsdReadClient: 20 POST /printers/HP_Color_LaserJet_CP1215 HTTP/1.1
D [04/Sep/2015:21:28:33 +0000] cupsdSetBusyState: newbusy="Active clients", busy="Not busy"
D [04/Sep/2015:21:28:33 +0000] cupsdAuthorize: No authentication data provided.
D [04/Sep/2015:21:28:33 +0000] cupsdReadClient: 20 1.0 Get-Printer-Attributes 11
D [04/Sep/2015:21:28:33 +0000] Get-Printer-Attributes http://192.168.0.64:631/printers/HP_Color_LaserJet_CP1215
D [04/Sep/2015:21:28:33 +0000] Returning IPP successful-ok for Get-Printer-Attributes (http://192.168.0.64:631/printers/HP_Color_LaserJet_CP1215) from 192.168.0.100
D [04/Sep/2015:21:28:33 +0000] cupsdSetBusyState: newbusy="Not busy", busy="Active clients"
D [04/Sep/2015:21:28:33 +0000] cupsdAcceptClient: 21 from 192.168.0.100:631 (IPv4)
D [04/Sep/2015:21:28:33 +0000] cupsdReadClient: 21 POST /printers/HP_Color_LaserJet_CP1215 HTTP/1.1
D [04/Sep/2015:21:28:33 +0000] cupsdSetBusyState: newbusy="Active clients", busy="Not busy"
D [04/Sep/2015:21:28:33 +0000] cupsdAuthorize: No authentication data provided.
D [04/Sep/2015:21:28:33 +0000] cupsdReadClient: 21 1.0 Get-Jobs 10
D [04/Sep/2015:21:28:33 +0000] Get-Jobs http://192.168.0.64:631/printers/HP_Color_LaserJet_CP1215
D [04/Sep/2015:21:28:33 +0000] Returning IPP successful-ok for Get-Jobs (http://192.168.0.64:631/printers/HP_Color_LaserJet_CP1215) from 192.168.0.100
D [04/Sep/2015:21:28:33 +0000] cupsdSetBusyState: newbusy="Not busy", busy="Active clients"
D [04/Sep/2015:21:28:33 +0000] cupsdAcceptClient: 22 from 192.168.0.100:631 (IPv4)
D [04/Sep/2015:21:28:33 +0000] cupsdReadClient: 22 POST /printers/Samsung_ML-1520 HTTP/1.1
D [04/Sep/2015:21:28:33 +0000] cupsdSetBusyState: newbusy="Active clients", busy="Not busy"
D [04/Sep/2015:21:28:33 +0000] cupsdAuthorize: No authentication data provided.
D [04/Sep/2015:21:28:33 +0000] cupsdReadClient: 22 1.0 Get-Printer-Attributes 11
D [04/Sep/2015:21:28:33 +0000] Get-Printer-Attributes http://192.168.0.64:631/printers/Samsung_ML-1520
D [04/Sep/2015:21:28:33 +0000] Returning IPP successful-ok for Get-Printer-Attributes (http://192.168.0.64:631/printers/Samsung_ML-1520) from 192.168.0.100
D [04/Sep/2015:21:28:33 +0000] cupsdSetBusyState: newbusy="Not busy", busy="Active clients"
D [04/Sep/2015:21:28:33 +0000] cupsdAcceptClient: 23 from 192.168.0.100:631 (IPv4)
D [04/Sep/2015:21:28:33 +0000] cupsdReadClient: 23 POST /printers/Samsung_ML-1520 HTTP/1.1
D [04/Sep/2015:21:28:33 +0000] cupsdSetBusyState: newbusy="Active clients", busy="Not busy"
D [04/Sep/2015:21:28:33 +0000] cupsdAuthorize: No authentication data provided.
D [04/Sep/2015:21:28:33 +0000] cupsdReadClient: 23 1.0 Print-Job 2
D [04/Sep/2015:21:28:33 +0000] Print-Job http://192.168.0.64:631/printers/Samsung_ML-1520
D [04/Sep/2015:21:28:33 +0000] [Job ???] Auto-typing file...
I [04/Sep/2015:21:28:33 +0000] [Job ???] Request file type is application/vnd.cups-raw.
D [04/Sep/2015:21:28:33 +0000] cupsdMarkDirty(----J-)
D [04/Sep/2015:21:28:33 +0000] cupsdSetBusyState: newbusy="Active clients and dirty files", busy="Active clients"
D [04/Sep/2015:21:28:33 +0000] add_job: requesting-user-name="Sandu Rajapakse"
D [04/Sep/2015:21:28:33 +0000] Adding default job-sheets values "none,none"...
I [04/Sep/2015:21:28:33 +0000] [Job 18] Adding start banner page "none".
D [04/Sep/2015:21:28:33 +0000] Discarding unused job-created event...
D [04/Sep/2015:21:28:33 +0000] cupsdMarkDirty(----J-)
D [04/Sep/2015:21:28:33 +0000] cupsdSetBusyState: newbusy="Active clients and dirty files", busy="Active clients and dirty files"
I [04/Sep/2015:21:28:33 +0000] [Job 18] Adding end banner page "none".
I [04/Sep/2015:21:28:33 +0000] [Job 18] File of type application/vnd.cups-raw queued by "Sandu Rajapakse".
D [04/Sep/2015:21:28:33 +0000] [Job 18] hold_until=0
I [04/Sep/2015:21:28:33 +0000] [Job 18] Queued on "Samsung_ML-1520" by "Sandu Rajapakse".
D [04/Sep/2015:21:28:33 +0000] cupsdMarkDirty(----J-)
D [04/Sep/2015:21:28:33 +0000] cupsdSetBusyState: newbusy="Active clients and dirty files", busy="Active clients and dirty files"
D [04/Sep/2015:21:28:33 +0000] cupsdSetBusyState: newbusy="Active clients and dirty files", busy="Active clients and dirty files"
D [04/Sep/2015:21:28:33 +0000] Discarding unused printer-state-changed event...
D [04/Sep/2015:21:28:33 +0000] [Job 18] job-sheets=none,none
D [04/Sep/2015:21:28:33 +0000] [Job 18] argv[0]="Samsung_ML-1520"
D [04/Sep/2015:21:28:33 +0000] [Job 18] argv[1]="18"
D [04/Sep/2015:21:28:33 +0000] [Job 18] argv[2]="Sandu Rajapakse"
D [04/Sep/2015:21:28:33 +0000] [Job 18] argv[3]="Microsoft Word - Mob Spawning.docx"
D [04/Sep/2015:21:28:33 +0000] [Job 18] argv[4]="1"
D [04/Sep/2015:21:28:33 +0000] [Job 18] argv[5]="job-uuid=urn:uuid:e9ae1e81-f7e9-38d2-7bfe-2894fa263899 job-originating-host-name=192.168.0.100 time-at-creation=1441402113 time-at-processing=1441402113"
D [04/Sep/2015:21:28:33 +0000] [Job 18] argv[6]="/var/spool/cups/d00018-001"
D [04/Sep/2015:21:28:33 +0000] [Job 18] envp[0]="CUPS_CACHEDIR=/var/cache/cups"
D [04/Sep/2015:21:28:33 +0000] [Job 18] envp[1]="CUPS_DATADIR=/usr/share/cups"
D [04/Sep/2015:21:28:33 +0000] [Job 18] envp[2]="CUPS_DOCROOT=/usr/share/cups/doc-root"
D [04/Sep/2015:21:28:33 +0000] [Job 18] envp[3]="CUPS_FONTPATH=/usr/share/cups/fonts"
D [04/Sep/2015:21:28:33 +0000] [Job 18] envp[4]="CUPS_REQUESTROOT=/var/spool/cups"
D [04/Sep/2015:21:28:33 +0000] [Job 18] envp[5]="CUPS_SERVERBIN=/usr/lib/cups"
D [04/Sep/2015:21:28:33 +0000] [Job 18] envp[6]="CUPS_SERVERROOT=/etc/cups"
D [04/Sep/2015:21:28:33 +0000] [Job 18] envp[7]="CUPS_STATEDIR=/var/run/cups"
D [04/Sep/2015:21:28:33 +0000] [Job 18] envp[8]="HOME=/var/spool/cups/tmp"
D [04/Sep/2015:21:28:33 +0000] [Job 18] envp[9]="PATH=/usr/lib/cups/filter:/usr/bin:/usr/sbin:/bin:/usr/bin"
D [04/Sep/2015:21:28:33 +0000] [Job 18] envp[10]="SERVER_ADMIN=root@raspberrypi"
D [04/Sep/2015:21:28:33 +0000] [Job 18] envp[11]="SOFTWARE=CUPS/1.5.3"
D [04/Sep/2015:21:28:33 +0000] [Job 18] envp[12]="TMPDIR=/var/spool/cups/tmp"
D [04/Sep/2015:21:28:33 +0000] [Job 18] envp[13]="TZ=Etc/UTC"
D [04/Sep/2015:21:28:33 +0000] [Job 18] envp[14]="USER=root"
D [04/Sep/2015:21:28:33 +0000] [Job 18] envp[15]="CUPS_SERVER=/var/run/cups/cups.sock"
D [04/Sep/2015:21:28:33 +0000] [Job 18] envp[16]="CUPS_ENCRYPTION=IfRequested"
D [04/Sep/2015:21:28:33 +0000] [Job 18] envp[17]="IPP_PORT=631"
D [04/Sep/2015:21:28:33 +0000] [Job 18] envp[18]="CHARSET=utf-8"
D [04/Sep/2015:21:28:33 +0000] [Job 18] envp[19]="LANG=en_US.UTF-8"
D [04/Sep/2015:21:28:33 +0000] [Job 18] envp[20]="PPD=/etc/cups/ppd/Samsung_ML-1520.ppd"
D [04/Sep/2015:21:28:33 +0000] [Job 18] envp[21]="RIP_MAX_CACHE=128m"
D [04/Sep/2015:21:28:33 +0000] [Job 18] envp[22]="CONTENT_TYPE=application/vnd.cups-raw"
D [04/Sep/2015:21:28:33 +0000] [Job 18] envp[23]="DEVICE_URI=usb://Samsung/ML-1520?serial=2X61BKAXC08883T."
D [04/Sep/2015:21:28:33 +0000] [Job 18] envp[24]="PRINTER_INFO=Samsung ML-1520"
D [04/Sep/2015:21:28:33 +0000] [Job 18] envp[25]="PRINTER_LOCATION=Sandu's Room - Near PC"
D [04/Sep/2015:21:28:33 +0000] [Job 18] envp[26]="PRINTER=Samsung_ML-1520"
D [04/Sep/2015:21:28:33 +0000] [Job 18] envp[27]="PRINTER_STATE_REASONS=none"
D [04/Sep/2015:21:28:33 +0000] [Job 18] envp[28]="CUPS_FILETYPE=document"
D [04/Sep/2015:21:28:33 +0000] [Job 18] envp[29]="AUTH_I****"
I [04/Sep/2015:21:28:33 +0000] [Job 18] Started backend /usr/lib/cups/backend/usb (PID 2413)
D [04/Sep/2015:21:28:33 +0000] Discarding unused job-state-changed event...
D [04/Sep/2015:21:28:33 +0000] Returning IPP successful-ok for Print-Job (http://192.168.0.64:631/printers/Samsung_ML-1520) from 192.168.0.100
D [04/Sep/2015:21:28:33 +0000] cupsdSetBusyState: newbusy="Printing jobs and dirty files", busy="Active clients and dirty files"
D [04/Sep/2015:21:28:33 +0000] [Job 18] Printing on printer with URI: usb://Samsung/ML-1520?serial=2X61BKAXC08883T.
D [04/Sep/2015:21:28:33 +0000] [Job 18] libusb_get_device_list=5
D [04/Sep/2015:21:28:33 +0000] [Job 18] STATE: +connecting-to-device
D [04/Sep/2015:21:28:33 +0000] Discarding unused printer-state-changed event...
D [04/Sep/2015:21:28:33 +0000] [Job 18] STATE: -connecting-to-device
D [04/Sep/2015:21:28:33 +0000] Discarding unused printer-state-changed event...
D [04/Sep/2015:21:28:33 +0000] [Job 18] STATE: +connecting-to-device
D [04/Sep/2015:21:28:33 +0000] Discarding unused printer-state-changed event...
D [04/Sep/2015:21:28:33 +0000] [Job 18] STATE: -connecting-to-device
D [04/Sep/2015:21:28:33 +0000] Discarding unused printer-state-changed event...
D [04/Sep/2015:21:28:33 +0000] [Job 18] Device protocol: 2
I [04/Sep/2015:21:28:33 +0000] [Job 18] Sending data to printer.
D [04/Sep/2015:21:28:33 +0000] [Job 18] Set job-printer-state-message to "Sending data to printer.", current level=INFO
D [04/Sep/2015:21:28:33 +0000] Discarding unused job-progress event...
D [04/Sep/2015:21:28:33 +0000] Discarding unused printer-state-changed event...
D [04/Sep/2015:21:28:33 +0000] [Job 18] PAGE: 1 1
D [04/Sep/2015:21:28:33 +0000] Discarding unused job-progress event...
D [04/Sep/2015:21:28:33 +0000] [Job 18] Read 8192 bytes of print data...
D [04/Sep/2015:21:28:33 +0000] [Job 18] Wrote 8192 bytes of print data...
D [04/Sep/2015:21:28:33 +0000] [Job 18] Sending print file, 8192 bytes...
D [04/Sep/2015:21:28:33 +0000] [Job 18] Read 8192 bytes of print data...
D [04/Sep/2015:21:28:33 +0000] [Job 18] Wrote 8192 bytes of print data...
D [04/Sep/2015:21:28:33 +0000] [Job 18] Sending print file, 16384 bytes...
D [04/Sep/2015:21:28:33 +0000] [Job 18] Read 8192 bytes of print data...
D [04/Sep/2015:21:28:33 +0000] [Job 18] Wrote 8192 bytes of print data...
D [04/Sep/2015:21:28:33 +0000] [Job 18] Sending print file, 24576 bytes...
D [04/Sep/2015:21:28:33 +0000] [Job 18] Read 8192 bytes of print data...
D [04/Sep/2015:21:28:33 +0000] [Job 18] Wrote 8192 bytes of print data...
D [04/Sep/2015:21:28:33 +0000] [Job 18] Sending print file, 32768 bytes...
D [04/Sep/2015:21:28:33 +0000] [Job 18] Read 8192 bytes of print data...
D [04/Sep/2015:21:28:33 +0000] [Job 18] Wrote 8192 bytes of print data...
D [04/Sep/2015:21:28:33 +0000] [Job 18] Sending print file, 40960 bytes...
D [04/Sep/2015:21:28:33 +0000] [Job 18] Read 779 bytes of print data...
D [04/Sep/2015:21:28:33 +0000] [Job 18] Wrote 779 bytes of print data...
D [04/Sep/2015:21:28:33 +0000] [Job 18] Sending print file, 41739 bytes...
D [04/Sep/2015:21:28:33 +0000] [Job 18] Sent 41739 bytes...
D [04/Sep/2015:21:28:33 +0000] [Job 18] Waiting for read thread to exit...
D [04/Sep/2015:21:28:40 +0000] [Job 18] Read thread still active, aborting the pending read...
D [04/Sep/2015:21:28:42 +0000] [Job 18] Resetting printer.
D [04/Sep/2015:21:28:42 +0000] PID 2413 (/usr/lib/cups/backend/usb) exited with no errors.
D [04/Sep/2015:21:28:42 +0000] Discarding unused job-completed event...
I [04/Sep/2015:21:28:42 +0000] [Job 18] Job completed.
D [04/Sep/2015:21:28:42 +0000] cupsdMarkDirty(----J-)
D [04/Sep/2015:21:28:42 +0000] cupsdSetBusyState: newbusy="Printing jobs and dirty files", busy="Printing jobs and dirty files"
D [04/Sep/2015:21:28:42 +0000] cupsdSetBusyState: newbusy="Printing jobs and dirty files", busy="Printing jobs and dirty files"
D [04/Sep/2015:21:28:42 +0000] Discarding unused printer-state-changed event...
D [04/Sep/2015:21:28:43 +0000] [Job 18] Unloading...
I [04/Sep/2015:21:29:04 +0000] Saving job.cache...
D [04/Sep/2015:21:29:04 +0000] cupsdSetBusyState: newbusy="Not busy", busy="Printing jobs and dirty files"
D [04/Sep/2015:21:29:20 +0000] cupsdNetIFUpdate: "lo" = localhost:631
D [04/Sep/2015:21:29:20 +0000] cupsdNetIFUpdate: "eth0" = 192.168.0.64:631
D [04/Sep/2015:21:29:20 +0000] Report: clients=9
D [04/Sep/2015:21:29:20 +0000] Report: jobs=18
D [04/Sep/2015:21:29:20 +0000] Report: jobs-active=0
D [04/Sep/2015:21:29:20 +0000] Report: printers=2
D [04/Sep/2015:21:29:20 +0000] Report: printers-implicit=0
D [04/Sep/2015:21:29:20 +0000] Report: stringpool-string-count=10342
D [04/Sep/2015:21:29:20 +0000] Report: stringpool-alloc-bytes=10360
D [04/Sep/2015:21:29:20 +0000] Report: stringpool-total-bytes=189208
D [04/Sep/2015:21:29:33 +0000] cupsdReadClient: 15 WAITING Closing on EOF
D [04/Sep/2015:21:29:33 +0000] cupsdCloseClient: 15
D [04/Sep/2015:21:29:33 +0000] cupsdSetBusyState: newbusy="Not busy", busy="Not busy"
D [04/Sep/2015:21:29:33 +0000] cupsdReadClient: 16 WAITING Closing on EOF
D [04/Sep/2015:21:29:33 +0000] cupsdCloseClient: 16
D [04/Sep/2015:21:29:33 +0000] cupsdSetBusyState: newbusy="Not busy", busy="Not busy"
D [04/Sep/2015:21:29:33 +0000] cupsdReadClient: 18 WAITING Closing on EOF
D [04/Sep/2015:21:29:33 +0000] cupsdCloseClient: 18
D [04/Sep/2015:21:29:33 +0000] cupsdSetBusyState: newbusy="Not busy", busy="Not busy"
D [04/Sep/2015:21:29:33 +0000] cupsdReadClient: 19 WAITING Closing on EOF
D [04/Sep/2015:21:29:33 +0000] cupsdCloseClient: 19
D [04/Sep/2015:21:29:33 +0000] cupsdSetBusyState: newbusy="Not busy", busy="Not busy"
D [04/Sep/2015:21:29:33 +0000] cupsdReadClient: 20 WAITING Closing on EOF
D [04/Sep/2015:21:29:33 +0000] cupsdCloseClient: 20
D [04/Sep/2015:21:29:33 +0000] cupsdSetBusyState: newbusy="Not busy", busy="Not busy"
D [04/Sep/2015:21:29:33 +0000] cupsdReadClient: 21 WAITING Closing on EOF
D [04/Sep/2015:21:29:33 +0000] cupsdCloseClient: 21
D [04/Sep/2015:21:29:33 +0000] cupsdSetBusyState: newbusy="Not busy", busy="Not busy"
D [04/Sep/2015:21:29:33 +0000] cupsdReadClient: 22 WAITING Closing on EOF
D [04/Sep/2015:21:29:33 +0000] cupsdCloseClient: 22
D [04/Sep/2015:21:29:33 +0000] cupsdSetBusyState: newbusy="Not busy", busy="Not busy"
D [04/Sep/2015:21:29:33 +0000] cupsdReadClient: 23 WAITING Closing on EOF
D [04/Sep/2015:21:29:33 +0000] cupsdCloseClient: 23
D [04/Sep/2015:21:29:33 +0000] cupsdSetBusyState: newbusy="Not busy", busy="Not busy"
D [04/Sep/2015:21:27:16 +0000] cupsdNetIFUpdate: "lo" = localhost:631
D [04/Sep/2015:21:27:16 +0000] cupsdNetIFUpdate: "eth0" = 192.168.0.64:631
D [04/Sep/2015:21:27:16 +0000] Report: clients=9
D [04/Sep/2015:21:27:16 +0000] Report: jobs=17
D [04/Sep/2015:21:27:16 +0000] Report: jobs-active=0
D [04/Sep/2015:21:27:16 +0000] Report: printers=2
D [04/Sep/2015:21:27:16 +0000] Report: printers-implicit=0
D [04/Sep/2015:21:27:16 +0000] Report: stringpool-string-count=10340
D [04/Sep/2015:21:27:16 +0000] Report: stringpool-alloc-bytes=10360
D [04/Sep/2015:21:27:16 +0000] Report: stringpool-total-bytes=189176
D [04/Sep/2015:21:27:43 +0000] cupsdReadClient: 15 WAITING Closing on EOF
D [04/Sep/2015:21:27:43 +0000] cupsdCloseClient: 15
D [04/Sep/2015:21:27:43 +0000] cupsdSetBusyState: newbusy="Not busy", busy="Not busy"
D [04/Sep/2015:21:27:43 +0000] cupsdReadClient: 16 WAITING Closing on EOF
D [04/Sep/2015:21:27:43 +0000] cupsdCloseClient: 16
D [04/Sep/2015:21:27:43 +0000] cupsdSetBusyState: newbusy="Not busy", busy="Not busy"
D [04/Sep/2015:21:27:43 +0000] cupsdReadClient: 18 WAITING Closing on EOF
D [04/Sep/2015:21:27:43 +0000] cupsdCloseClient: 18
D [04/Sep/2015:21:27:43 +0000] cupsdSetBusyState: newbusy="Not busy", busy="Not busy"
D [04/Sep/2015:21:27:43 +0000] cupsdReadClient: 19 WAITING Closing on EOF
D [04/Sep/2015:21:27:43 +0000] cupsdCloseClient: 19
D [04/Sep/2015:21:27:43 +0000] cupsdSetBusyState: newbusy="Not busy", busy="Not busy"
D [04/Sep/2015:21:27:43 +0000] cupsdReadClient: 20 WAITING Closing on EOF
D [04/Sep/2015:21:27:43 +0000] cupsdCloseClient: 20
D [04/Sep/2015:21:27:43 +0000] cupsdSetBusyState: newbusy="Not busy", busy="Not busy"
D [04/Sep/2015:21:27:43 +0000] cupsdReadClient: 21 WAITING Closing on EOF
D [04/Sep/2015:21:27:43 +0000] cupsdCloseClient: 21
D [04/Sep/2015:21:27:43 +0000] cupsdSetBusyState: newbusy="Not busy", busy="Not busy"
D [04/Sep/2015:21:27:43 +0000] cupsdReadClient: 22 WAITING Closing on EOF
D [04/Sep/2015:21:27:43 +0000] cupsdCloseClient: 22
D [04/Sep/2015:21:27:43 +0000] cupsdSetBusyState: newbusy="Not busy", busy="Not busy"
D [04/Sep/2015:21:27:43 +0000] cupsdReadClient: 23 WAITING Closing on EOF
D [04/Sep/2015:21:27:43 +0000] cupsdCloseClient: 23
D [04/Sep/2015:21:27:43 +0000] cupsdSetBusyState: newbusy="Not busy", busy="Not busy"
D [04/Sep/2015:21:28:18 +0000] cupsdNetIFUpdate: "lo" = localhost:631
D [04/Sep/2015:21:28:18 +0000] cupsdNetIFUpdate: "eth0" = 192.168.0.64:631
D [04/Sep/2015:21:28:18 +0000] Report: clients=1
D [04/Sep/2015:21:28:18 +0000] Report: jobs=17
D [04/Sep/2015:21:28:18 +0000] Report: jobs-active=0
D [04/Sep/2015:21:28:18 +0000] Report: printers=2
D [04/Sep/2015:21:28:18 +0000] Report: printers-implicit=0
D [04/Sep/2015:21:28:18 +0000] Report: stringpool-string-count=10340
D [04/Sep/2015:21:28:18 +0000] Report: stringpool-alloc-bytes=10360
D [04/Sep/2015:21:28:18 +0000] Report: stringpool-total-bytes=189176
D [04/Sep/2015:21:28:31 +0000] cupsdAcceptClient: 15 from 192.168.0.100:631 (IPv4)
D [04/Sep/2015:21:28:31 +0000] cupsdReadClient: 15 POST /printers/Samsung_ML-1520 HTTP/1.1
D [04/Sep/2015:21:28:31 +0000] cupsdSetBusyState: newbusy="Active clients", busy="Not busy"
D [04/Sep/2015:21:28:31 +0000] cupsdAuthorize: No authentication data provided.
D [04/Sep/2015:21:28:31 +0000] cupsdReadClient: 15 1.0 Get-Printer-Attributes 11
D [04/Sep/2015:21:28:31 +0000] Get-Printer-Attributes http://192.168.0.64:631/printers/Samsung_ML-1520
D [04/Sep/2015:21:28:31 +0000] Returning IPP successful-ok for Get-Printer-Attributes (http://192.168.0.64:631/printers/Samsung_ML-1520) from 192.168.0.100
D [04/Sep/2015:21:28:31 +0000] cupsdSetBusyState: newbusy="Not busy", busy="Active clients"
D [04/Sep/2015:21:28:32 +0000] cupsdAcceptClient: 16 from 192.168.0.100:631 (IPv4)
D [04/Sep/2015:21:28:32 +0000] cupsdReadClient: 16 POST /printers/Samsung_ML-1520 HTTP/1.1
D [04/Sep/2015:21:28:32 +0000] cupsdSetBusyState: newbusy="Active clients", busy="Not busy"
D [04/Sep/2015:21:28:32 +0000] cupsdAuthorize: No authentication data provided.
D [04/Sep/2015:21:28:32 +0000] cupsdReadClient: 16 1.0 Ge

Solução: Eu só descobri o que estava errado. Então, como mencionei no meu post original, a impressora conseguiu imprimir a página de teste do CUPS, o que significava que aquela conexão e comunicação eram muito boas entre a impressora e o CUPS. Mas quando eu envio uma página para imprimir do PC, ela falha. @thrig olhou as informações de depuração e me disse que estava enviando o arquivo inteiro. Isso me levou a pensar que isso era um problema de driver.

Como esta impressora é antiga, ela usa o driver de impressão Samsun Vniversal. Achei que isso estava causando uma falha de comunicação entre o PC e o CUPS (que tinha um driver específico da impressora). Então eu fui para o site da Samsung ML-1520 e procurei um driver específico do dispositivo. Eu encontrei um que era um driver de impressão GDI. Lembrando que o driver usado no CUPS também mencionou o GDI. Eu sabia que essa era a solução.

No entanto, é um driver antigo feito para o Windows 7 e estou usando o Windows 10 e recebi um erro de driver não assinado do Windows que me impediu de instalá-lo.

Com essa informação, fui procurar uma versão assinada de um driver GDI. Eu encontrei o driver GDI para o novo ML-2250. Eu também vim a saber que era compatível com a minha impressora também. Eu baixei isso e executei a extração. Depois que foi extraído, fui para os arquivos e encontrei o driver x64 GDI dentro. Em seguida, reinstalei a impressora ML-1520 no meu PC, mas quando ela pediu para selecionar o driver, selecionei 'Com disco' e selecionei o driver GDI assinado (em vez de selecioná-lo na lista). Depois de instalado, eu corri uma impressão e funcionou! Eu também testei com documentos do Word, PDFs e Imagens para ter certeza, mas parece ter resolvido o problema.

tl; dr: Foi uma questão de driver. Não use o driver de impressão universal. Obtenha um driver GDI no site da Samsung (talvez em uma versão mais recente, se a sua impressora for antiga). Deve ser assinado. Instale a impressora no PC e use o driver GDI em vez de selecionar do disco.

Espero que isso ajude alguém a enfrentar essas circunstâncias. Foi difícil encontrar algo relacionado a esse problema específico on-line.

Obrigado ao @thrig pela ajuda com a depuração.