Some third-party printer drivers may not work with the Desktop Printers feature of the Mac OS, which can provide a listing of queued print jobs.
If you need to view queued print jobs, disable desktop printing and set the PrintMonitor window to appear automatically when printing, as outlined below:
1. Use the Extensions Manager control panel to disable the Desktop PrintMonitor and Desktop Printer Spooler system extensions.
Figure 1 Extensions Manager control panel
2. Open PrintMonitor, located in the Extensions folder.
3. Choose Preferences from the File Menu.
Figure 2 PrintMonitor preferences
4. Click Yes to enable the "Show the PrintMonitor window when printing" option, then click OK.
5. Restart the computer.