How to Unhang the LP Print Service

1. Log in as superuser or lp.

2. Stop the LP print service.

   # lpshut

   If this command hangs, press Control-c and proceed to the next step. If this command succeeds, skip to step 4.

3. Identify the LP process IDs.

   # ps -el | grep lp 134 term/a 0:01 lpsched #

   Use the process ID numbers (PIDs) from the first column in place of the pid variables in the next step.

4. Stop the LP processes by using the kill -15 command.

   # kill -15 103 134

   This should stop the LP print service processes. If the processes do not stop, as a last resort go to step 5.

5. As a last resort, terminate the processes abruptly.

   # kill -9 103 134

   All the lp processes are terminated.

6. Remove the SCHEDLOCK file so you can restart the LP print service.

   # rm /usr/spool/lp/SCHEDLOCK

7. Restart the LP print service.

   # /usr/lib/lp/lpsched

   The LP print service should restart. If you are having trouble restarting the scheduler, see "How to Restart the Print Scheduler".