In most cases, if you only put the laptop into sleep mode, the screen should come back on when awaken. You should be able to use the laptop for most application, limited by what performances the Intel Integration Graphics Card can offer.
In most cases, this (for some reason) will activate the use of the built-in Intel Integrated graphics card. When you notice that the keyboard backlit is on, perform another short press the on/off button to put the unit into sleep mode, wait for about a minute, then press on/off or any key to bring the unit up. Make the unit is turn off first, then press the power button to start up. To get the screen back, it is possible to put the laptop into sleep mode. Upon a power down or restart, the screen goes black. I had a MacBookPro 15" Retina suffering from same problem only after 2 years of use. Most likely to do with malfunctioning Discrete Graphics Card. Panic(cpu 0 caller 0xffffff80004dbf5e): Kernel trap at 0xffffff800084c16e, type 13=general protection I’m facing this problem from 4 month ago, and I search a lot on the web to fix it but there's no solution! This problem starts one day when I was browsing internet and playing music, suddenly my laptop screen came black and the sound was killed, when I press any button in the keyboard it make sound, so I had to force shutdown my mac, after that the problem starts, after 2 months it repeated once and this time my Mac gave me a report logs. I've try to reset NVRAM & PRAM, but nothing work ! as I show you in the video the problem is when I wake up my laptop or restart the screen stay black (doesn't work) I should close it for 30 seconds and open it again (sometimes I do this step 2 or 3 times) and it's work good, about the HDMI and thunderbolt ports they doesn’t work.
Here the video i recorded to explaining my problem Hello, I have a problem with my MacBook Pro the problem is in the screen and the HDMI and thunderbolt ports,
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