Perhaps you will be able to see something I don't. If not let me know how could do whatever you need with the debug levels or log file in a better way
>Maybe you've to enable Loglevel "info" or "debug" in /etc/cups/cupsd.conf # date; cat /etc/cups/cupsd.conf | grep LogLevel Mo 6. Apr 22:37:44 CEST 2020 LogLevel debug # # cupsctl --debug-logging # cupsctl LogLevel=debug2 # grep -v "not idle any more" /var/log/cups/error_log | less E [06/Apr/2020:00:31:51 +0200] [Job 4] Job stopped due to filter errors; please consult the error_log file for details. D [06/Apr/2020:00:31:51 +0200] [Job 4] The following messages were recorded from 00:31:51 to 00:31:51 D [06/Apr/2020:00:31:51 +0200] [Job 4] Adding start banner page "none". D [06/Apr/2020:00:31:51 +0200] [Job 4] Queued on "Phaser-6125N" by "debuserme". D [06/Apr/2020:00:31:51 +0200] [Job 4] Auto-typing file... D [06/Apr/2020:00:31:51 +0200] [Job 4] Request file type is application/postscript. D [06/Apr/2020:00:31:51 +0200] [Job 4] File of type application/postscript queued by "debuserme". D [06/Apr/2020:00:31:51 +0200] [Job 4] Adding end banner page "none". D [06/Apr/2020:00:31:51 +0200] [Job 4] time-at-processing=1586125911 D [06/Apr/2020:00:31:51 +0200] [Job 4] 2 filters for job: D [06/Apr/2020:00:31:51 +0200] [Job 4] pstops (application/postscript to application/vnd.cups-postscript, cost 66) D [06/Apr/2020:00:31:51 +0200] [Job 4] /usr/lib/cups/filter/FXM_PF (application/vnd.cups-postscript to printer/Phaser-6125N, cost 0) D [06/Apr/2020:00:31:51 +0200] [Job 4] job-sheets=none,none D [06/Apr/2020:00:31:51 +0200] [Job 4] argv[0]="Phaser-6125N" D [06/Apr/2020:00:31:51 +0200] [Job 4] argv[1]="4" D [06/Apr/2020:00:31:51 +0200] [Job 4] argv[2]="debuserme" D [06/Apr/2020:00:31:51 +0200] [Job 4] argv[3]="2020-04-03_draft08.pdf" D [06/Apr/2020:00:31:51 +0200] [Job 4] argv[4]="1" D [06/Apr/2020:00:31:51 +0200] [Job 4] argv[5]="noCollate Duplex=DuplexNoTumble finishings=3 fit-to-page media=A4 number-up=1 outputorder=normal page-bottom=12 page-left=11 page-right=12 page-top=11 portrait sides=one-sided job-uuid=urn:uuid:5a8f06ec-1d43-3cfa-6138-560befd55620 job-originating-host-name=localhost date-time-at-creation= date-time-at-processing= time-at-creation=1586125911 time-at-processing=1586125911 document-name-supplied=okularDB4703.ps PageSize=A4" D [06/Apr/2020:00:31:51 +0200] [Job 4] argv[6]="/var/spool/cups/d00004-001" D [06/Apr/2020:00:31:51 +0200] [Job 4] envp[0]="CUPS_CACHEDIR=/var/cache/cups" D [06/Apr/2020:00:31:51 +0200] [Job 4] envp[1]="CUPS_DATADIR=/usr/share/cups" D [06/Apr/2020:00:31:51 +0200] [Job 4] envp[2]="CUPS_DOCROOT=/usr/share/cups/doc-root" D [06/Apr/2020:00:31:51 +0200] [Job 4] envp[3]="CUPS_FONTPATH=/usr/share/cups/fonts" D [06/Apr/2020:00:31:51 +0200] [Job 4] envp[4]="CUPS_REQUESTROOT=/var/spool/cups" D [06/Apr/2020:00:31:51 +0200] [Job 4] envp[5]="CUPS_SERVERBIN=/usr/lib/cups" D [06/Apr/2020:00:31:51 +0200] [Job 4] envp[6]="CUPS_SERVERROOT=/etc/cups" D [06/Apr/2020:00:31:51 +0200] [Job 4] envp[7]="CUPS_STATEDIR=/var/run/cups" D [06/Apr/2020:00:31:51 +0200] [Job 4] envp[8]="HOME=/var/spool/cups/tmp" D [06/Apr/2020:00:31:51 +0200] [Job 4] envp[9]="PATH=/usr/lib/cups/filter:/usr/bin:/usr/sbin:/bin:/usr/bin" D [06/Apr/2020:00:31:51 +0200] [Job 4] envp[10]="SERVER_ADMIN=root@lbrtchx" D [06/Apr/2020:00:31:51 +0200] [Job 4] envp[11]="SOFTWARE=CUPS/2.2.1" D [06/Apr/2020:00:31:51 +0200] [Job 4] envp[12]="TMPDIR=/var/spool/cups/tmp" D [06/Apr/2020:00:31:51 +0200] [Job 4] envp[13]="USER=root" > Have a closer look at /var/log/cups/error_log the last lines in the error_log are: http://localhost:631/admin/log/error_log ... D [06/Apr/2020:22:51:06 +0200] [Client 96] Server address is "[v1.::1]". D [06/Apr/2020:22:51:06 +0200] [Client 96] Accepted from localhost:45526 (IPv6) d [06/Apr/2020:22:51:06 +0200] cupsdAddSelect(fd=15, read_cb=0x5559df967db0, write_cb=(nil), data=0x5559e175d430) D [06/Apr/2020:22:51:06 +0200] [Client 96] Waiting for request. I [06/Apr/2020:22:51:06 +0200] Expiring subscriptions... d [06/Apr/2020:22:51:06 +0200] cupsdCheckJobs: 2 active jobs, sleeping=0, ac-power=-1, reload=0, curtime=1586206266 d [06/Apr/2020:22:51:06 +0200] cupsdCheckJobs: Job 5 - dest="Xerox_Phaser_6125N", printer=(nil), state=6, cancel_time=0, hold_until=1586129075, kill_time=0, pending_cost=0, pending_timeout=0 d [06/Apr/2020:22:51:06 +0200] cupsdCheckJobs: Job 6 - dest="Xerox_Phaser_6125N", printer=(nil), state=6, cancel_time=0, hold_until=1586206257, kill_time=0, pending_cost=0, pending_timeout=0 d [06/Apr/2020:22:51:06 +0200] select_timeout: JobHistoryUpdate=0 d [06/Apr/2020:22:51:06 +0200] [Client 96] cupsdReadClient: error=0, used=0, state=HTTP_STATE_WAITING, data_encoding=HTTP_ENCODING_LENGTH, data_remaining=0, request=(nil)(), file=-1 D [06/Apr/2020:22:51:06 +0200] [Client 96] GET /admin/log/error_log HTTP/1.1 D [06/Apr/2020:22:51:06 +0200] cupsdSetBusyState: newbusy="Active clients", busy="Not busy" D [06/Apr/2020:22:51:06 +0200] [Client 96] Read: status=200 d [06/Apr/2020:22:51:06 +0200] cupsdFindBest: uri="/admin/log/error_log", limit=2... d [06/Apr/2020:22:51:06 +0200] cupsdFindBest: Location /admin/log(10) Limit 7f d [06/Apr/2020:22:51:06 +0200] cupsdFindBest: Location /admin/conf(11) Limit 7f d [06/Apr/2020:22:51:06 +0200] cupsdFindBest: Location /admin(6) Limit 7f d [06/Apr/2020:22:51:06 +0200] cupsdFindBest: Location /(1) Limit 7f d [06/Apr/2020:22:51:06 +0200] cupsdFindBest: best=/admin/log d [06/Apr/2020:22:51:06 +0200] [Client 96] con->uri="/admin/log/error_log", con->best=0x5559e16d8a80(/admin/log) D [06/Apr/2020:22:51:06 +0200] [Client 96] Authorized as "debuserme" using Basic. d [06/Apr/2020:22:51:06 +0200] cupsdIsAuthorized: con->uri="/admin/log/error_log", con->best=0x5559e16d8a80(/admin/log) d [06/Apr/2020:22:51:06 +0200] cupsdIsAuthorized: level=CUPSD_AUTH_USER, type=Basic, satisfy=CUPSD_AUTH_SATISFY_ALL, num_names=1 d [06/Apr/2020:22:51:06 +0200] cupsdIsAuthorized: auth=CUPSD_AUTH_ALLOW... D [06/Apr/2020:22:51:06 +0200] cupsdIsAuthorized: username="debuserme" d [06/Apr/2020:22:51:06 +0200] cupsdIsAuthorized: Checking user membership... d [06/Apr/2020:22:51:06 +0200] cupsdCheckGroup(username="debuserme", user=0x7fafb092ed80, groupname="lpadmin") D [06/Apr/2020:22:51:06 +0200] [Client 96] Processing GET /admin/log/error_log
