I identified the issue by running `cups -t` to check config and solved
it by commenting out. Since I run etckeeper I could track the change and
date in config back to 2024. So there seems to be a change in a recent
update that cupsd now bails out with an error.

I cannot recall what exactly caused the changes, but there were no
package installations or upgrades involved - I guess there were manual
changes of printers.


```
commit e78e94c42814551931d816fb35bac450dcec280b
Author: root <root@mom>
Date:   Mon May 24 07:40:14 2021 +0200

    daily autocommit


# git diff e78e94c42814551931d816fb35bac450dcec280b cupsd.conf
diff --git a/cups/cupsd.conf b/cups/cupsd.conf
index 698e374..0f6b6ce 100644
--- a/cups/cupsd.conf
+++ b/cups/cupsd.conf
@@ -1,7 +1,7 @@
-LogLevel warn
+# Show troubleshooting information in error_log.
+LogLevel debug
 PageLogFormat
 MaxLogSize 0
-# Allow remote access
 Port 631
 Listen /run/cups/cups.sock
 Browsing On
@@ -9,7 +9,6 @@ BrowseLocalProtocols dnssd
 DefaultAuthType Basic
 WebInterface Yes
 <Location />
-  # Allow remote access...
   Order allow,deny
   Allow all
 </Location>
@@ -119,3 +118,7 @@ WebInterface Yes
     Order deny,allow
   </Limit>
 </Policy>
+#JobPrivateAccess default
+#JobPrivateValues default
+#SubscriptionPrivateAccess default
+#SubscriptionPrivateValues default
```

-- 
You received this bug notification because you are a member of Ubuntu
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https://bugs.launchpad.net/bugs/2133406

Title:
  CUPS fails to start after update 2.4.7-1.2ubuntu7.7 due to invalid
  directives appended to cupsd.conf

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