Select text and place the insertion point.View formatting symbols and layout guides.Intro to images, charts, and other objects.If it doesn't, experiment with leaving it out. The undocumented use of this pmset command seems to improve sleep/wake/shutdown behaviour. Sudo defaults write LoginHook /Library/LoginHook/LoadX3000.sh Then make it executable and active: sudo chmod a+x /Library/LoginHook/LoadX3000.sh Pmset -a force gpuswitch 0 # undocumented/experimental Kextload /System/Library/Extensions-off/AMDRadeonX3000.kext Sudo nano /Library/LoginHook/LoadX3000.sh
![mac has gray and black background mac has gray and black background](https://thumbs.dreamstime.com/b/macbook-pro-space-gray-similar-laptop-computer-front-view-to-apple-inch-high-angle-perspective-dark-background-keyboard-139446990.jpg)
If you have a temperature sensor application you might want to have it open before issuing the above command and watch the temps drop…Īutomate this with the following LoginHook that will get executed after the next reboot: sudo mkdir -p /Library/LoginHook Part 2: improve thermal and power managementįor improved power management of the disabled GPU you have to either manually load the one crucial kext after boot by: sudo kextload /System/Library/Extensions-off/AMDRadeonX3000.kext (In this state the GPU is always idling with relatively high power, consuming quite a bit of battery when unplugged and leading to GPU temperatures from 60☌ upwards, despite not being used for anything by system.)
MAC HAS GRAY AND BLACK BACKGROUND HOW TO
You should now have an iGPU accelerated display, but the system doesn't know how to power-management the failed AMD-chip.
MAC HAS GRAY AND BLACK BACKGROUND UPDATE
Inform the system to update its kextcache: touch /System/Library/Extensions/ Only move ONE offending kext out of the way: mv /System/Library/Extensions/AMDRadeonX3000.kext /System/Library/Extensions-off/ Make a kext-backup directory mkdir -p /System/Library/Extensions-off Mount root partition writeable /sbin/mount -uw / Reboot into Single User-mode by holding Cmd+s on boot Now power on again and hold Cmd+Opt+p+r at the same time until you hear the startup chime two times.īoot into Single User Recovery by holding Cmd+r+sĭisable dGPU on boot with setting the following variable: nvram fa4ce28d-b62f-4c99-9cc3-6815686e30f9:gpu-power-prefs=%01%00%00%00Įnable verbose boot mode: nvram boot-args="-v" To start from a clean slate: reset SMC and NVRAM: shutdown, unplug everything except power, now hold leftShift+Ctrl+Opt+Power and release all at the same time Part 1: Disable SIP, disable dGPU, move one kernel extension Here are the steps (copied from linked page above): I fixed this issue by disabling the AMD graphics chip as described in the chosen solution (look for the green section) on this forum: Has anyone else experienced this issue? Any other possibilities I could look into? I'm assuming that a repair at the Apple Store will be prohibitively expensive. I have NOT tried hooking it up via dongle to an external display to see if the issue exists there as well, I'll try that this evening. It never restarted itself.Īt the moment I am pretty sure it's either an issue with the the display cable if I'm lucky, or the dedicated graphics adapter or the motherboard (Intel graphics are on-die on the processor) if I'm not. Instead, it booted, went bong, and then the screen went grey. Usually it boots, goes bong, reboots, and then loads. I've also tried resetting NVRAM, but it doesn't seem to work properly. I ran extended tests, and no problems were detected (yeah, right). The only thing I was able to get to run was internet based diagnostics. But in all cases, the screen goes grey when I try to select something. If I hold option, it will show me disk selection (I triple boot OS X/Linux/Windows). BIOS shows ok (except the overlayed green lines), and then a grey screen. The same thing happens if I try to launch recovery, internet recovery, or diagnostics whatever. This stays for a moment – until the loading scroll bar reaches about 1/3 to 1/2 of the way across – and then the screen goes grey. Turning it back on, the screen now had thin green lines overlayed over the apple logo boot screen. I open and closed the lid – it suspended just fine, but opening the lid back up gave me nothing.
![mac has gray and black background mac has gray and black background](https://c4.wallpaperflare.com/wallpaper/519/602/496/apple-logo-on-dark-background-wallpaper-preview.jpg)
Last night I was using my late 2011 MBP (higher res screen, dual Intel/AMD graphics), and the screen suddenly went black.