Still, switches to the discrete GPU does occur. I applied the fix from GitHub that apparently limits use of highest power graphics state. Still, switches to the discrete GPU does occur.Ī wrench in the mix? : I have the MacBookPro that is prone to kernel panics when graphics switch occurs. I applied the fix from GitHub that apparently limits use of highest power graphics state. Maybe gfxCardStatus set in integrated only is in conflict when the Energy Prefs setting is set to High Performance, which forces it to switch to discrete graphics whenever a graphics intensive app is launched. And I don't really know what the bug is.Ī wrench in the mix? : I have the MacBookPro that is prone to kernel panics when graphics switch occurs. This useful utility displays a bar showing the status of your graphics cards, allowing you to quickly identify which card is not working, and enables you to quickly switch to. I wouldn't know where to begin to file a bug. GFXCard Status is an open-source utility for OS X that displays which graphics card is currently being used on MacBook Pro (and the older iMac) by monitoring a console. Isn't it desirable to have dynamic switching? Is Chrome 80 designed to switch dynamically? My Chrome 80 doesn't. So, Firefox doesn't behave the same as Chrome - at least in my MacbookPro setup. This is the behavior I had seen before 74. Ive also noticed another Sierra issue new since 10.12.2: Sometimes the OS gets sluggish due to low graphics card RAM (very noticeable when watching videos) and a reboot fixes it. In Firefox 74, when I set fault-low-power to False, Firefox switches between the discrete and the integrated GPU dynamically. "Use hardware acceleration when available" has always been enabled. With Firefox 74, switch to discrete GPU never happens. Switch back to integrated GPU never happens. That got me the white screen and high fan noise.In Chrome, when I turn on "Use hardware acceleration when available", graphics switches immediately to the discrete GPU. 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. Previously I had tried GFXbench to test it, and it went straight back to no vertical lines at boot. It got heated up a bit but no GPU issue so far. I even plugged it into a cinema display and played HD on youtube. 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. 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 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. I had similar non bootable problem with a MBP 17 inch (early 2011). Considering the site lists support as 10.7 (Lion) and newer, and only mentions up to the 2012 models as supported I'd say it's been abandoned for a while now. I think the developer stopped supporting the app so getting any issues fixed will be an exercise in frustration. 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. The app is buggy in Sierra, I still use it on my 2012 non-Retina. 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. 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). 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). Please note that only source code is there so Xcode is requred to compile the binary. 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.
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