A impressora de rede Epson no CentOS 6.9 não responde, por quê?

Question

Estou tentando fazer com que uma impressora de rede Epson funcione com o CentOS 6.9 (arco de 32 bits). Até agora eu tenho

• baixou os drivers da impressora no site do fabricante e os instalou.
• Configurei uma impressora chamada epson com o CUPS 1.4.2 via interface web (localhost: 631), seguindo o procedimento passo-a-passo, escolhendo o PPD certo entre os listados (Epson SX535WD).
• Configurei as opções padrão da dita impressora através da interface da web do CUPS

Toda vez que eu reinicio o computador, então tento imprimir um documento pdf, seja através do evince ou diretamente via lp , nada acontece! O trabalho é interrompido e aparece uma janela de erro dizendo que o sistema operacional não pôde se comunicar com a impressora. Eu basicamente tenho que refazer toda a instalação, toda vez que eu precisar imprimir urgentemente um documento. Como isso pode ser? Está acontecendo há meses, agora!

Você pode por favor me ajudar?

Eu gostaria de postar a depuração da impressora feita pelo CentOS, mas há um limite de 30k caracteres no SE.

Eu gostaria de postar o relatório de Depuração e o mais recente /var/log/cups/error_log , mas há um limite de 30k. Em vez disso, estou postando uma captura de tela da interface da web das xícaras.

Em "estado" na parte inferior, escreve " / usr / lib / cups / filtro / epson-escpr-wrapper falhou ", o que significa?

Adendo1

/var/log/cups/error:

E[12/Mar/2018:11:33:28+0100]Unabletofinalize"/etc/cups/subscriptions.conf": Permission denied
E [12/Mar/2018:12:17:43 +0100] Unable to finalize "/etc/cups/subscriptions.conf": Permission denied
E [12/Mar/2018:17:48:23 +0100] Unable to finalize "/etc/cups/subscriptions.conf": Permission denied
E [14/Mar/2018:09:27:59 +0100] Unable to finalize "/etc/cups/subscriptions.conf": Permission denied
E [14/Mar/2018:13:10:05 +0100] [Job 36] Job stopped due to filter errors; please consult the error_l
og file for details.
D [14/Mar/2018:13:10:05 +0100] [Job 36] The following messages were recorded from 01:10:04 PM to 01:
10:05 PM
D [14/Mar/2018:13:10:05 +0100] [Job 36] cmap 16292 4022
D [14/Mar/2018:13:10:05 +0100] [Job 36] cvt  20316 420
D [14/Mar/2018:13:10:05 +0100] [Job 36] fpgm 20736 139
D [14/Mar/2018:13:10:05 +0100] [Job 36] gasp 20876 12
D [14/Mar/2018:13:10:05 +0100] [Job 36] glyf 20888 219072
D [14/Mar/2018:13:10:05 +0100] [Job 36] head 239960 54
D [14/Mar/2018:13:10:05 +0100] [Job 36] hhea 240016 36
D [14/Mar/2018:13:10:05 +0100] [Job 36] hmtx 240052 13284
D [14/Mar/2018:13:10:05 +0100] [Job 36] kern 253336 8148
D [14/Mar/2018:13:10:05 +0100] [Job 36] loca 261484 13288
D [14/Mar/2018:13:10:05 +0100] [Job 36] maxp 274772 32
D [14/Mar/2018:13:10:05 +0100] [Job 36] name 274804 8718
D [14/Mar/2018:13:10:05 +0100] [Job 36] post 283524 31508
D [14/Mar/2018:13:10:05 +0100] [Job 36] prep 315032 1407
D [14/Mar/2018:13:10:05 +0100] [Job 36] findname: 6 = (DejaVuSerifCondensed-Bold)
CUPS-error-log.txt                                                                1,1            Top
"CUPS-error-log.txt" 3346L, 228432C

Depurador

Page 1 (Scheduler not running?):
{'cups_connection_failure': False}
Page 2 (Choose printer):
{'cups_dest': <cups.Dest epson (default)>,
 'cups_instance': None,
 'cups_queue': 'epson',
 'cups_queue_listed': True}
Page 3 (Check printer sanity):
{'cups_device_uri_scheme': u'socket',
 'cups_printer_dict': {'device-uri': u'socket://192.168.1.75:9100',
                       'printer-info': u'Epson Stylus SX535WD',
                       'printer-is-shared': True,
                       'printer-location': u'',
                       'printer-make-and-model': u'Epson Stylus SX535WD Series - epson-inkjet-printer 1.0.1-1lsb3.2 (Seiko Epson Corporation LSB 3.2)',
                       'printer-state': 3,
                       'printer-state-message': u'Processing page 1...',
                       'printer-state-reasons': [u'none'],
                       'printer-type': 135180,
                       'printer-uri-supported': u'ipp://localhost:631/printers/epson'},
 'cups_printer_remote': False,
 'is_cups_class': False,
 'local_cups_queue_attributes': {'auth-info-required': u'none',
                                 'charset-configured': u'utf-8',
"CUPS_troubleshoot.txt" 441L, 31540C                                              1,1           Top

error_log excerto

D [14/Mar/2018:23:12:55 +0100] [Job 41] Looking up "192.168.1.75"...
D [14/Mar/2018:23:12:55 +0100] [Job 41] Connecting to 192.168.1.75:515 for printer PASSTHRU
D [14/Mar/2018:23:12:55 +0100] [Job 41] Connecting to printer...
D [14/Mar/2018:23:12:55 +0100] [Job 41] Job canceled by "root"
D [14/Mar/2018:23:12:55 +0100] [Job 41] Backend returned status 1 (failed)
D [14/Mar/2018:23:12:55 +0100] [Job 41] End of messages
D [14/Mar/2018:23:12:55 +0100] [Job 41] printer-state=3(idle)
D [14/Mar/2018:23:12:55 +0100] [Job 41] printer-state-message="Connecting to printer..."
D [14/Mar/2018:23:12:55 +0100] [Job 41] printer-state-reasons=none
E [14/Mar/2018:23:13:25 +0100] Unable to finalize "/etc/cups/printers.conf": Permission denied
E [14/Mar/2018:23:13:25 +0100] Unable to finalize "/etc/cups/subscriptions.conf": Permission denied
E [14/Mar/2018:23:13:28 +0100] [CGI] Unable to create avahi client: Resource temporarily unavailable
E [14/Mar/2018:23:13:28 +0100] [cups-deviced] PID 9155 (dnssd) stopped with status 1!
E [14/Mar/2018:23:14:03 +0100] Unable to finalize "/etc/cups/printers.conf": Permission denied
E [14/Mar/2018:23:14:04 +0100] Unable to finalize "/etc/cups/subscriptions.conf": Permission denied
E [14/Mar/2018:23:14:42 +0100] Unable to finalize "/etc/cups/subscriptions.conf": Permission denied
E [14/Mar/2018:23:15:22 +0100] Unable to finalize "/etc/cups/subscriptions.conf": Permission denied
E [14/Mar/2018:23:19:25 +0100] [CGI] Unable to create avahi client: Resource temporarily unavailable
E [14/Mar/2018:23:19:25 +0100] [cups-deviced] PID 9432 (dnssd) stopped with status 1!
E [14/Mar/2018:23:20:31 +0100] [CGI] Unable to create avahi client: Resource temporarily unavailable
E [14/Mar/2018:23:20:31 +0100] [cups-deviced] PID 9504 (dnssd) stopped with status 1!
E [14/Mar/2018:23:20:51 +0100] Unable to finalize "/etc/cups/printers.conf": Permission denied
E [14/Mar/2018:23:20:51 +0100] Unable to finalize "/etc/cups/subscriptions.conf": Permission denied
E [14/Mar/2018:23:22:05 +0100] Unable to finalize "/etc/cups/printers.conf": Permission denied
E [14/Mar/2018:23:22:05 +0100] Unable to finalize "/etc/cups/subscriptions.conf": Permission denied
E [14/Mar/2018:23:23:03 +0100] [CGI] Unable to create avahi client: Resource temporarily unavailable
E [14/Mar/2018:23:23:03 +0100] [cups-deviced] PID 9573 (dnssd) stopped with status 1!
E [14/Mar/2018:23:23:09 +0100] Unable to finalize "/etc/cups/printers.conf": Permission denied
E [14/Mar/2018:23:27:27 +0100] [CGI] Unable to create avahi client: Resource temporarily unavailable
E [14/Mar/2018:23:27:27 +0100] [cups-deviced] PID 9652 (dnssd) stopped with status 1!
E [14/Mar/2018:23:27:28 +0100] Unable to finalize "/etc/cups/printers.conf": Permission denied
E [14/Mar/2018:23:28:53 +0100] [CGI] Unable to create avahi client: Resource temporarily unavailable
E [14/Mar/2018:23:28:53 +0100] [cups-deviced] PID 9713 (dnssd) stopped with status 1!
E [14/Mar/2018:23:28:56 +0100] Unable to finalize "/etc/cups/printers.conf": Permission denied
E [14/Mar/2018:23:29:02 +0100] [CGI] Unable to create avahi client: Resource temporarily unavailable
E [14/Mar/2018:23:29:02 +0100] [cups-deviced] PID 9741 (dnssd) stopped with status 1!
E [14/Mar/2018:23:31:29 +0100] Unable to finalize "/etc/cups/printers.conf": Permission denied
E [14/Mar/2018:23:32:59 +0100] Unable to finalize "/etc/cups/printers.conf": Permission denied
E [14/Mar/2018:23:32:59 +0100] Unable to finalize "/etc/cups/subscriptions.conf": Permission denied
E [14/Mar/2018:23:33:33 +0100] Unable to finalize "/etc/cups/printers.conf": Permission denied
E [14/Mar/2018:23:33:33 +0100] Unable to finalize "/etc/cups/subscriptions.conf": Permission denied
E [14/Mar/2018:23:36:59 +0100] [CGI] Unable to create avahi client: Resource temporarily unavailable
E [14/Mar/2018:23:36:59 +0100] [cups-deviced] PID 9885 (dnssd) stopped with status 1!
E [14/Mar/2018:23:39:24 +0100] Unable to finalize "/etc/cups/printers.conf": Permission denied
E [14/Mar/2018:23:39:24 +0100] Unable to finalize "/etc/cups/subscriptions.conf": Permission denied
E [14/Mar/2018:23:39:33 +0100] [CGI] Unable to create avahi client: Resource temporarily unavailable
E [14/Mar/2018:23:39:33 +0100] [cups-deviced] PID 9959 (dnssd) stopped with status 1!
E [14/Mar/2018:23:39:54 +0100] Unable to finalize "/etc/cups/printers.conf": Permission denied
E [14/Mar/2018:23:41:50 +0100] Unable to finalize "/etc/cups/printers.conf": Permission denied
E [14/Mar/2018:23:41:50 +0100] Unable to finalize "/etc/cups/subscriptions.conf": Permission denied
E [14/Mar/2018:23:42:27 +0100] Unable to finalize "/etc/cups/printers.conf": Permission denied
E [14/Mar/2018:23:43:10 +0100] Unable to finalize "/etc/cups/printers.conf": Permission denied
E [14/Mar/2018:23:43:10 +0100] Unable to finalize "/etc/cups/subscriptions.conf": Permission denied
E [14/Mar/2018:23:43:43 +0100] Unable to finalize "/etc/cups/subscriptions.conf": Permission denied
D [14/Mar/2018:23:43:58 +0100] [Job 44] The following messages were recorded from 11:42:48 PM to 11:43:58 PM
D [14/Mar/2018:23:43:58 +0100] [Job 44] Wrote 8192 bytes of print data...