Since upgrade Mac kills internet & sleeps too long

[Steamedroller]

Since recently upgrading to Mojave (I actually wiped my Mac to get rid of some old issues first) I have experienced too annoying problems that I can't fix even after following numerous tutorials, and they are:

1. When my Mac locks or goes to sleep, it takes about 10-15 seconds before it wakes up again for me to sign in. It used to simply take a tap of a key and it would wake up immediately... I've tried locking, sleeping, screensaver options but it always ends up with the same problem.

2. Whenever my Mac goes to sleep, it kills the internet and my download manager stops. I have tried tutorials that had me removing my wifi settings and then adding them again as new ones but it hasn't fixed the problem.

These issues are driving me up the wall and I can't help but think that they are both related.

Any assistance you can provide would be greatly appreciated.

 

[harriska2]

Sadly the answer is to not put the computer to sleep - but do put monitor to sleep.

 

[Steamedroller]

Sadly the answer is to not put the computer to sleep - but do put monitor to sleep.

OK thanks, I hadn't drawn the distinction between the two, to be honest. Hopefully I can figure out how to do that, any advice on what settings to change would be greatly appreciated.

 

[jbarley]

System Preferences -> Energy Saver.

 

[Steamedroller]

System Preferences -> Energy Saver.
View attachment 823411

Thanks for that but I know I was able to have my screen go to black after 5 minutes previously but it still only took a tap of the key to wake it up to log back in. If I set the screen to never turn off it will constantly have a screenszver that will keep me awake won't it?

 

[Ritsuka]

There is screen sleep, and then there is computer sleep. Your download manager should disable computer sleep, if it doesn't you should ask the developer.

 

[dazzer21-2]

Screen sleep also takes an annoyingly long amount of time to wake. Used to be instant on Sierra/High Sierra.

 

[harriska2]

Screen sleep also takes an annoyingly long amount of time to wake. Used to be instant on Sierra/High Sierra.

What monitor and connection type are you using - or year of imac or type of laptop? I use a 40” Samsung 4k monitor that requires a remote to turn back on after a couple hours. It is a strange setup but works well.

 

[Steamedroller]

Screen sleep also takes an annoyingly long amount of time to wake. Used to be instant on Sierra/High Sierra.

Oh I think that's the problem. It was fine before the upgrade but it takes ages... it sucks. It's almost enough to go back one version.

 

[dazzer21-2]

What monitor and connection type are you using - or year of imac or type of laptop? I use a 40” Samsung 4k monitor that requires a remote to turn back on after a couple hours. It is a strange setup but works well.

iMac i5 5K, late 2015. Was using the standard 10.12 Sierra install which was great before upgrading to Mojave.

 

[harriska2]

iMac i5 5K, late 2015. Was using the standard 10.12 Sierra install which was great before upgrading to Mojave.

Good to know. Looks like Apple really did a doozy with sleep. My hubby said he hasn’t used computer sleep for a few years and he was on el cap until a few weeks ago. He still doesn’t use it on his 2018 mac mini. I turned it off within 2 days because it was obvious it didn’t work.That said, it never really worked with my Windows 7 machine either, especially if you had scheduled things like back ups.

 

[lh_nm]

Good to know. Looks like Apple really did a doozy with sleep. My hubby said he hasn’t used computer sleep for a few years and he was on el cap until a few weeks ago. He still doesn’t use it on his 2018 mac mini. I turned it off within 2 days because it was obvious it didn’t work.That said, it never really worked with my Windows 7 machine either, especially if you had scheduled things like back ups.

Is it possible that the long delay problem is on a laptop? By default, laptops now first write a "sleep image" file before going to "sleep", which is a copy of the laptop's memory contents. Writing that out, then reading it back in when you wake the laptop takes a while, since memory is several gigabytes. Apparently desktops do not use a sleep image file by default.

A brief qualifier - the following works with MacOS 10.12 ("Sierra") and may work with more recent MacOS versions

To manage using the sleep image file, you can use a couple of terminal window commands:

To find out what it is currently set to type:
pmset -g | grep hibernatemode

On a laptop, by default, it is 3, which means it should write and read the sleepimage file. On a desktop, apparently the default is a value of 0, which means it should NOT write and read the sleepimage file.

To turn off use of the sleepimage file, first become an administrator: su "administrator_user_name" (fill in the appropriate administrator user name). Enter the administrator password.

Then to change the sleepimage behavior:

sudo pmset -a hibernatemode 0 (that is a zero; you will need to enter the administrator password again)

Some additional information. The sleepimage file is located at: /private/var/vm/sleepimage (equivalently at /var/vm/sleepimage). "pmset" is a utility that manipulates power management settings; type man pmset for more information.

My laptop goes to sleep and wakes up much, much faster after I turned off use of the sleepimage file.

I hope this helps you.
Leigh

 

[harriska2]

Is it possible that the long delay problem is on a laptop? By default, laptops now first write a "sleep image" file before going to "sleep", which is a copy of the laptop's memory contents. Writing that out, then reading it back in when you wake the laptop takes a while, since memory is several gigabytes. Apparently desktops do not use a sleep image file by default.

A brief qualifier - the following works with MacOS 10.12 ("Sierra") and may work with more recent MacOS versions

To manage using the sleep image file, you can use a couple of terminal window commands:

To find out what it is currently set to type:
pmset -g | grep hibernatemode

On a laptop, by default, it is 3, which means it should write and read the sleepimage file. On a desktop, apparently the default is a value of 0, which means it should NOT write and read the sleepimage file.

To turn off use of the sleepimage file, first become an administrator: su "administrator_user_name" (fill in the appropriate administrator user name). Enter the administrator password.

Then to change the sleepimage behavior:

sudo pmset -a hibernatemode 0 (that is a zero; you will need to enter the administrator password again)

Some additional information. The sleepimage file is located at: /private/var/vm/sleepimage (equivalently at /var/vm/sleepimage). "pmset" is a utility that manipulates power management settings; type man pmset for more information.

My laptop goes to sleep and wakes up much, much faster after I turned off use of the sleepimage file.

I hope this helps you.
Leigh

The 2013 mbp is on el cap works great for sleep computer. The 2013 imacs and 2018 minis not so much. We use sleep monitor on all computers just fine across all OS versions.

 

[Steamedroller]

My Machine is an Imac, not a macbook.

iMac (27-inch, Late 2013)
NVIDIA GeForce GT 755M 1024 MB