Hi Brian, the issue is back faster then I thought :-/
The error_log contains E [23/Aug/2018:09:52:42 +0200] Missing value on line 23 of /var/cache/cups/ job.cache. E [23/Aug/2018:09:52:42 +0200] Missing value on line 36 of /var/cache/cups/ job.cache. E [23/Aug/2018:09:52:42 +0200] Missing value on line 625 of /var/cache/cups/ job.cache. E [23/Aug/2018:09:52:42 +0200] Missing value on line 805 of /var/cache/cups/ job.cache. E [23/Aug/2018:09:52:42 +0200] Missing value on line 1273 of /var/cache/cups/ job.cache. E [23/Aug/2018:16:34:21 +0200] [Job 123] Tea4CUPS (PID 29747) : Traceback (most recent call last): E [23/Aug/2018:16:34:21 +0200] [Job 123] Tea4CUPS (PID 29747) : File \"/usr/ lib/cups/backend/tea4cups\", line 1502, in <module> E [23/Aug/2018:16:34:21 +0200] [Job 123] Tea4CUPS (PID 29747) : wrapper.exportAttributes() E [23/Aug/2018:16:34:21 +0200] [Job 123] Tea4CUPS (PID 29747) : File \"/usr/ lib/cups/backend/tea4cups\", line 1214, in exportAttributes E [23/Aug/2018:16:34:21 +0200] [Job 123] Tea4CUPS (PID 29747) : os.environ[\"TEABILLING\"] = self.JobBilling or \"\" E [23/Aug/2018:16:34:21 +0200] [Job 123] Tea4CUPS (PID 29747) : File \"/usr/ lib/python2.7/os.py\", line 473, in __setitem__ E [23/Aug/2018:16:34:21 +0200] [Job 123] Tea4CUPS (PID 29747) : putenv(key, item) E [23/Aug/2018:16:34:21 +0200] [Job 123] Tea4CUPS (PID 29747) : TypeError: putenv() argument 2 must be string, not int E [23/Aug/2018:16:37:44 +0200] [Job 123] Tea4CUPS (PID 29935) : Traceback (most recent call last): E [23/Aug/2018:16:37:44 +0200] [Job 123] Tea4CUPS (PID 29935) : File \"/usr/ lib/cups/backend/tea4cups\", line 1502, in <module> E [23/Aug/2018:16:37:44 +0200] [Job 123] Tea4CUPS (PID 29935) : wrapper.exportAttributes() E [23/Aug/2018:16:37:44 +0200] [Job 123] Tea4CUPS (PID 29935) : File \"/usr/ lib/cups/backend/tea4cups\", line 1214, in exportAttributes E [23/Aug/2018:16:37:44 +0200] [Job 123] Tea4CUPS (PID 29935) : os.environ[\"TEABILLING\"] = self.JobBilling or \"\" E [23/Aug/2018:16:37:44 +0200] [Job 123] Tea4CUPS (PID 29935) : File \"/usr/ lib/python2.7/os.py\", line 473, in __setitem__ E [23/Aug/2018:16:37:44 +0200] [Job 123] Tea4CUPS (PID 29935) : putenv(key, item) E [23/Aug/2018:16:37:44 +0200] [Job 123] Tea4CUPS (PID 29935) : TypeError: putenv() argument 2 must be string, not int E [23/Aug/2018:16:37:51 +0200] [Job 123] Tea4CUPS (PID 29947) : Traceback (most recent call last): E [23/Aug/2018:16:37:51 +0200] [Job 123] Tea4CUPS (PID 29947) : File \"/usr/ lib/cups/backend/tea4cups\", line 1502, in <module> E [23/Aug/2018:16:37:51 +0200] [Job 123] Tea4CUPS (PID 29947) : wrapper.exportAttributes() E [23/Aug/2018:16:37:51 +0200] [Job 123] Tea4CUPS (PID 29947) : File \"/usr/ lib/cups/backend/tea4cups\", line 1214, in exportAttributes E [23/Aug/2018:16:37:51 +0200] [Job 123] Tea4CUPS (PID 29947) : os.environ[\"TEABILLING\"] = self.JobBilling or \"\" E [23/Aug/2018:16:37:51 +0200] [Job 123] Tea4CUPS (PID 29947) : File \"/usr/ lib/python2.7/os.py\", line 473, in __setitem__ E [23/Aug/2018:16:37:51 +0200] [Job 123] Tea4CUPS (PID 29947) : putenv(key, item) E [23/Aug/2018:16:37:51 +0200] [Job 123] Tea4CUPS (PID 29947) : TypeError: putenv() argument 2 must be string, not int I did not find anything specific for a full error_log in the wiki https://wiki.debian.org/Printing can you post a link? Thanks Rainer PS: Needless to say after I added the patch, the issue went away.
