Category Archives: Mac

Catalina or High Sierra on MacBook A1286 2011 with broken GPU

Posted on June 19, 2022 by peter

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

Posted on June 9, 2022 by peter

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 →

Posted in Linux, Mac | 1 Comment

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

Posted on April 25, 2022 by peter

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

Posted on April 18, 2022 by peter

–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

Posted on April 11, 2022 by peter

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 $200 (was $290)

Posted on March 14, 2022 by peter

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 the price Contact via Craigslist Boston-South-Shore $290 cash on pickup … Continue reading →

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