![]() ![]() It seems that I have found more reliable or permanent software solution allowing to permanently disable discrete GPU and use mbp (mine is Mbp 8.3 17i early 2011) with broken discrete GPU (failing to boot) than gfxCardStatus 1.8-2.2.1, namely. Please note that only source code is there so Xcode is requred to compile the binary. ![]() The application runs from terminal, reportedly uses the same code as gfxCardStatus but writes the setting into NVRAM(PRAM) so machine remains switched to internal GPU on next boot(s)/wake(s). This saved me from frequent overheat shutdowns under blanket just to load the os (after overheat shutdown the system forcibly uses igpu but this state changes back after couple of boots so it becomes necessary to overheat again). After about a week of gpu-switch testing, however, I have to conclude that this solution has its drawbacks too: it works fine after shutdown (including abnormal or forced one), sleep, hibernation, but it does not prevent mbp from switching to dgpu on running graphic demanding apps such as googlemaps in browser. gfxCardStatus (integrated only mode) is better in this respect so I use both and now I can say that the machine is very stable and reliable after all. I had similar non bootable problem with a MBP 17 inch (early 2011). I followed these steps and got a workable fix: Saw all the online action, the lawsuits etc… Hopefully apple will do a recall as it was bought by me for graphic intense tasks like video editing. If you boot and get vertical stripes > apple logo > white grey screen, let it run hot as the fans kick in block the keyboard from venting airflow or wrap the mbp closed in a blanket. I then I let it cool down completely, (in fact I put it outside on the balcony.) I left it for about half an hour then switched it off by holding down the power button. I even plugged it into a cinema display and played HD on youtube. It got heated up a bit but no GPU issue so far. Previously I had tried GFXbench to test it, and it went straight back to no vertical lines at boot. If your MBP doesn't get to white screen before shutting down while attempting to boot, hold down the option key and boot into recovery disk. The requirements failing here are affected by this. Unfortunately, this includes many older packages that never got ported to the repository branches that were retained. That got me the white screen and high fan noise.On some Macs with dual cards, such as my 2011 MBP, use of the Energy Saver automatic graphics switching will trigger a display problem when logging out and logging back in: the display will be stuck on a lower-resolution option until restart. 3 Answers Sorted by: 19 Conda v4.7 dropped a branch of the Anaconda Cloud repository called the free channel for the sake of improving solving performance. You can't get back the highest resolution and have black bars at the top and bottom of the screen (the higher resolution setting is not available on the integrated card, and for some reason the system won't permit the change). This seems to be an Apple bug triggered by some update in the past couple of months, at least on my MBP. This application allows me to choose the card to use when I want to save battery power and have no external display connected.īut it resets automatic switching if it was turned off before the app was run. ![]()
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