Troubleshooting checklist

Start with the following checks before editing print system configuration:

For Canon queues, also review Canon printing issues for application settings, CUPS filtering, controller requirements, and installation libraries.

1. Check the installed version and vendor README. Printer, spooler and OS support vary by distribution.
2. Verify the spooler is running. BrightQ-Pro relies on an existing CUPS, System V, BSD/LPRng or AIX print system.
3. Inspect queues and statuses. Run codehost-config -a and codehost-config -q.
4. Verify the connection URI. For network devices, check hostname, port, resource/path and remote LPD queue.
5. Check printer model/driver. A wrong PPD or absent device license can prevent correct rendering or hide finishing options.
6. Test raw vs filtered mode carefully. Only use raw mode for print-ready data compatible with the destination.
7. Review permissions. Queue creation, driver changes and monitoring are often administrator-only.
8. Read logs and device status. Use the underlying spooler’s diagnostics plus codehost-config -t <queue> where supported.

Common symptoms

Symptom	Likely area to check
Printer is unreachable	Network/USB connection, hostname/port and firewall.
Job is accepted but not printed	Queue disabled, printer unavailable, spooler state.
Output is garbled	Wrong PPD, wrong PDL, raw mode, incompatible filter.
PJM does not appear	Queue PJM setting, lack of X11, installer integration.
Job options are missing	Driver-specific capability, raw queue, filter configuration.
Licensing doesn’t activate	Registration state, machine ID, CLP file, license service availability.