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MBP retina display 2015 freezing after Big Sur 11.4 no apps running in background

Is there a workaround for this problem? I make sure to close down each day and there are no applications running other than the one in use, i.e. mail freezes all through the day and the only solution so far is to wait for a very long while, or force the machine to restart.


thank you.

Posted on Jun 30, 2021 10:28 AM

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Question marked as Best reply

Posted on Jun 30, 2021 11:13 AM

1. Reset PRAM:  Reset NVRAM or PRAM on your Mac - Apple Support

     Settings that can be stored in NVRAM include sound volume, display resolution, startup-disk selection, time zone, 

     and recent kernel panic information. 

     The settings stored in NVRAM  depend on your Mac and the devices that you're using with your Mac.


2. Reset  SMC:   How to reset the SMC of your Mac - Apple Support   Choose the appropriate method.

    Quote:

    Resetting the system management controller (SMC) can resolve certain issues related to power, battery, fans,

    and other features.


3. Startup in Safe mode. https://support.apple.com/en-gb/HT201262

    To leave Safe Mode, choose “Restart” at the bottom.

    Quote:

     Safe mode prevents your Mac from loading certain software when it starts up, including login items, 

     system extensions not required by macOS,

     and fonts not installed by macOS. It  also does a basic check of your startup disk, 

     similar to using First Aid in Disk Utility

     And it deletes some system caches, including font caches and the kernel cache, 

     which will be created again automatically as needed.


If steps posted above don’t help:

 Download EtreCheck: https://etrecheck.com/  and post the report here.

 Click, “Free Download” button and then  “Click to download” button,

 open Downloads folder, click on it to open, and then select ”Open”.

 Choose a problem” from the popup menu box, and then “Start EtreCheck” in the dialog.

 Click “Share Report” button in the toolbar and select “Copy report”.

 Click the “Page” button in the toolbar at the bottom of this page and paste it when you reply.


 Note: This is a diagnostic test. 

2 replies
Question marked as Best reply

Jun 30, 2021 11:13 AM in response to Sharkdiver00

1. Reset PRAM:  Reset NVRAM or PRAM on your Mac - Apple Support

     Settings that can be stored in NVRAM include sound volume, display resolution, startup-disk selection, time zone, 

     and recent kernel panic information. 

     The settings stored in NVRAM  depend on your Mac and the devices that you're using with your Mac.


2. Reset  SMC:   How to reset the SMC of your Mac - Apple Support   Choose the appropriate method.

    Quote:

    Resetting the system management controller (SMC) can resolve certain issues related to power, battery, fans,

    and other features.


3. Startup in Safe mode. https://support.apple.com/en-gb/HT201262

    To leave Safe Mode, choose “Restart” at the bottom.

    Quote:

     Safe mode prevents your Mac from loading certain software when it starts up, including login items, 

     system extensions not required by macOS,

     and fonts not installed by macOS. It  also does a basic check of your startup disk, 

     similar to using First Aid in Disk Utility

     And it deletes some system caches, including font caches and the kernel cache, 

     which will be created again automatically as needed.


If steps posted above don’t help:

 Download EtreCheck: https://etrecheck.com/  and post the report here.

 Click, “Free Download” button and then  “Click to download” button,

 open Downloads folder, click on it to open, and then select ”Open”.

 Choose a problem” from the popup menu box, and then “Start EtreCheck” in the dialog.

 Click “Share Report” button in the toolbar and select “Copy report”.

 Click the “Page” button in the toolbar at the bottom of this page and paste it when you reply.


 Note: This is a diagnostic test. 

MBP retina display 2015 freezing after Big Sur 11.4 no apps running in background

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