![]() The Northbridge chip was overheating, causing the panics and shutdowns. One of the two plastic push-pins which secures the heat sink to the chip had disintegrated. ![]() It has its own little heat sink with vertical metal fins. In between CPU A and CPU B is a chip called the Northbridge (which controls traffic to the CPUs). The panics started soon after I installed the latest security update for El Capitan (along with a few other app updates, including Logic Pro, MainStage, and Postbox).Īnybody had a similar experience and figured it out?ĮDIT: Here's the solution, to save you reading the whole thread. Except from what I've read online, a bad graphics card would probably show symptoms like a gray or black screen.Īs I write this, I've been booted in Safe Mode for almost two hours, and haven't yet had a crash. Others mention what I think has to do with the graphics card, ".NVDAResmanTesla". Steps taken, not in chronological order: reinstalled El Capitan from Recovery Mode, used Disk Utility to perform first aid on System drive while in Recovery Mode, reset NVRAM, reset SMC, used Tech Tool Pro to repair permissions and check the RAM, disconnected all peripherals except the display and a USB hub for my keyboard and trackpad, checked the system drive with Onyx, booted in Safe Mode, removed all RAM except the original RAM, removed the original RAM and left in the newer RAM.īased on some stuff I read online, I checked the panic logs, especially the section "Kernel Extensions in backtrace". It's happened while working in several different apps - nothing consistent. I've done a bunch of troubleshooting, but am not yet sure if it's a hardware or software problem. ![]() I've been getting frequent kernel panics the past few days on my 2009 Mac Pro 8 x 2.26 GHz "Nehalem".
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