Q: After 10.10.4 update older HP printers not working
After I updated to 10.10.4 (and this still holds true for 10.10.5) both of my old HP Designjet 800PS plotters and my HP Laserjet 4050 monochrome laser printers stopped working over Ethernet. In the log files I am seeing broken pipes and on the printers I get nonsense text dumps or nothing at all. If I reboot into Leopard I can print to them just fine. I have tried this with 8 different Yosemite machines (iMacs, Mac Pros and MacBook Pros) with the same results. I can get around it for the 800PS plotters by connecting via USB to computers and sharing the plotters from them - but since the old 4050s don't have USB it seems I am SOL. I have noticed that others are reporting problems with older printers. Could it be these older units only accept smaller packets and changes in Yosemite are only sending larger packets? If there is anyone out there with these units have you had any luck getting them to work? TIA
iMac, OS X Yosemite (10.10.5), 27 inch i7 2015 iMac with 32 GB RAM
Posted on Aug 15, 2015 7:13 AM
