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MACBOOK KEEPS FREEZING RESTARTING RUNNING WHILE SLEEPING HOW TO
MACBOOK KEEPS FREEZING RESTARTING RUNNING WHILE SLEEPING FULL
MACBOOK KEEPS FREEZING RESTARTING RUNNING WHILE SLEEPING PRO

If it matters, my external monitor is a display port, DELL U3011 Display, 30-inch (2560 x 1600).

MACBOOK KEEPS FREEZING RESTARTING RUNNING WHILE SLEEPING PRO

Usually, the MacBook pro built-in screen will not be recognized until the unlock process is complete. I have had this on multiple OS versions going back at least 4 years, maybe longer.Ĭonnecting to an external monitor almost always works.

I have had this problem on multiple MacBook pro 15" machines, I have had it on a 2011, and a 2012.

usually only happens after it has been asleep for some time(30+ minutes?).

momentary power switch touch will turn the backlight off.

The backlight will light up when enter/shift/mouse are used.

It seems to happen more often when I am plugging in power very near the time I am waking up the OS. Usually, the system will "wake up" display the lock screen either with the password box or not, then the screen goes blank and it will not wake up. I have had a problem with the same symptoms.

Turn your computer back on with the power button.Īfter resetting both the NVRAM and SMC, use your computer to determine if the issue still persists.Ĭonnecting to an external monitor almost always works for me.

Keep holding for 10 seconds and then let go.

shift (on the right side of the keyboard for computers with the T2 security chip on the left side otherwise).

option control (on the left side of the keyboard).

To reset the SMC on your particular MBP, follow these steps: speaker volume, screen resolution, startup disk selection, time zone information, etc). Note: When you log back in you may need to readjust some of your system preferences (e.g.

Let go of the keys and let your Mac reboot normally.

Hold those keys down until your Mac reboots again and you here the startup chime.

You have to make sure you press these keys before the gray screen appears or it won’t work.

Press the power button and then press the command option p r keys.

MACBOOK KEEPS FREEZING RESTARTING RUNNING WHILE SLEEPING FULL

Yes, a full shut down, not just logging out.

MACBOOK KEEPS FREEZING RESTARTING RUNNING WHILE SLEEPING HOW TO

Here’s how to reset the NVRAM on your particular MBP: Older Macs had what's called Parameter RAM (PRAM), newer Macs use Non-Volatile Random-Access Memory (NVRAM). Before following the steps below, ensure you have no external hardware connected (so, unplug your external display) and make sure you use the built-in keyboard. The first things I'd try are to reset both the NVRAM and SMC in that order. I would welcome any ideas on what may be wrong but also advice on where to look (log files?) to debug the situation. In all the above cases the system has to be hard rebooted by pressing the power button. Thought there may be a conflict with the Energy Saver Display-off settings but keeps the same behaviour in all possible different settings including when choosing not to allow the display to switch off.

It has higher possibility to happen when connected to power.

Happens only after some time has passed (perhaps 15') after initiating the sleep.

Some times it wakes up, gives the login screen but freezes (spinning ball) after logging in.

Sometimes the mouse pointer may appear but the screen remains black.

Seems to "wake up" (you can see the backlight of the screen activating) but the screen remains black.

The situation has the following observed characteristics: The above mentioned Macbook Pro Retina (Mid 2015) with SSD, running Sierra seems to be freezing most of the times, after attempting to "wake" it up from sleep.