After updating MacBook Pro to OS X Yosemite, fans running crazy and com.hp.device model.TransportProxy using high CPU usage up to 300%. It was a driver for an HP printer/device. It’s really a frustrating problem. Here, I going to share some solutions to solve the problem. Then follow the upcoming steps.
Fix 1: Delete Unfinished Printer Entries
Go to Apple Menu -> System Preferences -> Printers and scanners preferences and delete the various entries of trouble maker printer from the list.
It takes a few minutes for the MacBook Pro to cool down.
Note: In System Preferences -> Printers & Scanners panel, double-click the HP print queue to open it. Choose each unfinished job in the window that opens, then click the X button on the right to delete it.
Fix 2: Uninstall HP Software
Uninstall the HP software by using the HP uninstaller. MacBook Pro ventilation will be slowed down immediately after you complete the uninstallation process.
Fix 3: Update or Reinstall the Driver
Try to update or reinstall the drivers for HP devices. Then try resetting the SMC (it will fix fan problems).
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Thank you!!!! Really helpful!!!!