Category Archives: Mac

Catalina or High Sierra on MacBook A1286 2011 with broken GPU

The 15″ and 17″ Macbook Pro from 2011 are known for their dGPU failures (AMD-GPU). In my previous post  Ubuntu 22.04 on MacBook A1286 2011 with broken GPU  I described how I got this MacBook working under Ubuntu. Here is … Continue reading

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Ubuntu 22.04 on MacBook A1286 2011 with broken GPU

The 15″ and 17″ Macbook Pro from 2011 are known for their dGPU failures (AMD-GPU). There are both software and hardware hacks to turn off the broken dGPU and use the iGPU found on the Intel processor.  The easiest is, … Continue reading

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Ubuntu 22.04 on iMac a1312 (2011) w. 4850 video card

For inspiration see: Github rowanphipps/macOS_rEFInd_guide EFI-Booting Ubuntu on a Mac How to Install and Set up Ubuntu 20.04 on an Old MacBook Pro Here is what I did: Download ubuntu-22.04 and writing it onto a USB-stick restart the iMac, when … Continue reading

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iMac a1312 power supply 614-0446 repair

–WORK IN PROGRESS — My late 2009 i5 iMac had a fault on the motherboard which shorted the PP12v_G3H to ground, not even the first of the diagnostics LED lighted up. No diagnostics lights normally indicates a dead power supply, … Continue reading

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I²C or SMBus sniffer using Arduino

I had a need to continuously monitor a I²C bus, so I looked around for an Arduino solution, but didn’t find anything that suited my needs, so I wrote one myself.  None of the I²C-sniffers I was able to find … Continue reading

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iMac 27″ 2011 for sale $250 (was $290)

CPU Intel  2.7GHz i5-2500s Quad-core RAM 8Gb upgradeable to 32Gb 27″ 2560 x 1440 display (LED backlit) 128 Gb Samsung SSD 2 Tb Harddrive No keyboard nor mouse included in price Contact via Craigslist Boston-South-Shore $290 cash on pickup Extra … Continue reading

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