Hello, it's almost a month (I'd say after upgrading to Big Sur) that my MacBook Pro turns itself off almost every time I turn it on: it boots, the desktop appears and then it goes black, screen and keyboard turned off. I have then to push the power button again on the touch bar, wait another 10 seconds and the system comes back to life.
These are the specs:
MacBook Pro (15-inch, 2019)
macOS Big Sur 11.0.1
2,4 GHz Intel Core i9 8 core
32 GB 2400 MHz DDR4
Radeon Pro Vega 20 4 GB
any help appreciated.
After many test I've had to reset the NVRAM by holding 20 seconds OPTION+COMMAND+R+P at startup and it's working so far.
Never mind: the problem is back, even with updated Big Sur (11.1). I turn the Mac on, reaches the desktop and the screen and buttons go black. If I try to wake it up by the power button, sometimes it comes back after a few tries, sometimes it shows the low battery icon. If the low battery alert appears, I have to plug the power back in to turn it on...to discover that the battery is 100%. Battery usage gives no problems.
The problem continues and it seems to me that it’s somehow tied to batteries since I didn’t experience c’è issues once the ac adapter is connected. If I reset the NVRAM/PRAM/SMC “it seems” to me that the “going black right after loading the OS” is fixed for a few days. Then it comes back: I start the system, enter my password and, once at the desktop, like after 4-5 seconds, it turns off. Like a “sleep state”.
Today I was running Final Cut Pro X and it turned off after an hour of work with 60% battery. It came back once the ac was plugged in. I’d didn’t shut down completely: it was looking like an energy saving sleep state.
I’ve tired diagnosis twice with no results.
Any suggestions would be appreciated.