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Would appreciate if you can share the easiest steps to do a clean install, i never did

Just because I read that you said you upgraded to an SSD, did you mean that you configured the machine to be purely SSD and not fusion drive? This will affect the steps I would give just a little bit if your machine is a fusion drive.

The general directions I would give is first make a full backup. In fact make two full backups if one of the drives you are using is not reliable. Once this is done, hold CMD+Opt+R when rebooting the machine, ideally connected via ethernet. Let internet recovery boot, which should boot you to 10.14.1 recovery. Open disk utility, click view, then click show all devices. Click on the uppermost physical device that is labeled APPLE SSD... then click erase and choose APFS, GUID partition scheme, and name it Macintosh HD or something else if you want. From there, quit disk utility and choose the option to reinstall macOS. Let this finish, you can walk away at this point for a half hour or so if the machine is pure SSD. Once macOS boots up, run through the setup and don't restore any data if it asks. Once you get to your desktop, drag and drop all your content back in the right places, and go reinstall your apps via download or however you go them.

Things should run much smoother.
 
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fisherking wrote:
"why would you leave your mac on all day? what's the benefit? and what's wrong with sleep? if someone has a sleep-related issue, that's worth investigating. what does one gain by your idea?"

Well, because... I do things my way, thank you very much.

When I see folks having trouble, I offer my advice.

It's offered freely, but no one has to take it.

If one doesn't care for it, one can just ignore it... ;)
 
No reason to leave it on all day?? Maybe not but I have a late 2009 iMac and it's on 24/7 for almost 10 years and not problem.
 
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fisherking wrote:
"why would you leave your mac on all day? what's the benefit? and what's wrong with sleep? if someone has a sleep-related issue, that's worth investigating. what does one gain by your idea?"

Well, because... I do things my way, thank you very much.

When I see folks having trouble, I offer my advice.

It's offered freely, but no one has to take it.

If one doesn't care for it, one can just ignore it... ;)

i don't see a problem with having your own way of doing things, but it's not unreasonable to, if you're offering advice, expect an explanation...
 
Haven’t had a chance to update yet. Does it fix the 2 min delay when cold booting with external SSD USB 3 drive?
 
Haven’t had a chance to update yet. Does it fix the 2 min delay when cold booting with external SSD USB 3 drive?
I doubt it very much...
My cold boot-up time just quadrupled...(fusion drive with 8G ram)
Apple managed to turn my late 2013 Mac into a black&white CRT television from the early sixties...
IT'S PATHETIC !!!
 
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I doubt it very much...
My cold boot-up time just quadrupled...(fusion drive with 8G ram)
Apple managed to turn my late 2013 Mac into a black&white CRT television from the early sixties...
IT'S PATHETIC !!!
Yeah that's pathetic. There is no reason for Apple to disable or prevent this cold boot from external boot drives. It's a shame alright.
 
If the other suggestions have not fixed it, then I have observed with my upgrades that all Mojave updated computers will run like a turtle for the first 24+ hours to reindex the SDD or do the first time machine backup (which your evidently not using). With you shutting down the computer it probably, knowing how sloppy Apple is these days, starts over each time. You can figure out if this is the case by searching for instructions, but the best thing to do is to set system preferences to NOT ever shutdown or sleep your computer, to blank the display after 15 minutes, and then just let it run for 48 hours. After that you can change it back to shutdown or sleep as you desire.

The quality of Apple's software to run in the background and just work is exceedingly bad these days. They have dropped all notions that you should know what the computer is doing in the background. It can be figured out, but it's not easy for a non-tech savvy person.
 
If the other suggestions have not fixed it, then I have observed with my upgrades that all Mojave updated computers will run like a turtle for the first 24+ hours to reindex the SDD or do the first time machine backup (which your evidently not using). With you shutting down the computer it probably, knowing how sloppy Apple is these days, starts over each time. You can figure out if this is the case by searching for instructions, but the best thing to do is to set system preferences to NOT ever shutdown or sleep your computer, to blank the display after 15 minutes, and then just let it run for 48 hours. After that you can change it back to shutdown or sleep as you desire.

The quality of Apple's software to run in the background and just work is exceedingly bad these days. They have dropped all notions that you should know what the computer is doing in the background. It can be figured out, but it's not easy for a non-tech savvy person.
This is absolutely correct because indexing can sometimes take "forever".
 
Just because I read that you said you upgraded to an SSD, did you mean that you configured the machine to be purely SSD and not fusion drive? This will affect the steps I would give just a little bit if your machine is a fusion drive.

The general directions I would give is first make a full backup. In fact make two full backups if one of the drives you are using is not reliable. Once this is done, hold CMD+Opt+R when rebooting the machine, ideally connected via ethernet. Let internet recovery boot, which should boot you to 10.14.1 recovery. Open disk utility, click view, then click show all devices. Click on the uppermost physical device that is labeled APPLE SSD... then click erase and choose APFS, GUID partition scheme, and name it Macintosh HD or something else if you want. From there, quit disk utility and choose the option to reinstall macOS. Let this finish, you can walk away at this point for a half hour or so if the machine is pure SSD. Once macOS boots up, run through the setup and don't restore any data if it asks. Once you get to your desktop, drag and drop all your content back in the right places, and go reinstall your apps via download or however you go them.

Things should run much smoother.


Yes it's all-SSD
[doublepost=1544142839][/doublepost]
If the other suggestions have not fixed it, then I have observed with my upgrades that all Mojave updated computers will run like a turtle for the first 24+ hours to reindex the SDD or do the first time machine backup (which your evidently not using). With you shutting down the computer it probably, knowing how sloppy Apple is these days, starts over each time. You can figure out if this is the case by searching for instructions, but the best thing to do is to set system preferences to NOT ever shutdown or sleep your computer, to blank the display after 15 minutes, and then just let it run for 48 hours. After that you can change it back to shutdown or sleep as you desire.

The quality of Apple's software to run in the background and just work is exceedingly bad these days. They have dropped all notions that you should know what the computer is doing in the background. It can be figured out, but it's not easy for a non-tech savvy person.


for 48 hours?! why? and why do you think if i change the settings back the problem will not come back?
 
Yes it's all-SSD
[doublepost=1544142839][/doublepost]


for 48 hours?! why? and why do you think if i change the settings back the problem will not come back?

I don't know if it will solve the problem or not. But major system upgrades often require spotlight reindexing the storage (SSD in your case). This reindexing should complete in a few hours, but Apple's background tasks these days seem to get stuck for no reason and spend a lot of time doing nothing. By doing nothing, I mean there is no CPU activity, no network activity, and no disk activity. In these cases it is extremely hard to figure out what is going on. The best approach is just to let it run for a bit. You don't lose anything trying it.

This solution has nothing to do with the settings, the settings changes are just letting the computer run its course for a while. These days Apple thinks it owns your computer and Apple expects you to leave your computer running and allow Apple to control sleep when it is done. Your computer does a lot while asleep; check email, report back to Apple, download browsing blacklists, check that you're running a legal OS, etc. When you shut down your computer, it needs to do all of these things when you start up and it runs slower for while. When you upgrade a lot more things need to be done, so sometimes in my experience, its just best to let your computer get it all out of the way after an upgrade.

YMMV, but I never shut down my Apple computers, except when they are doing weird stuff, and I always make sure they are awake some time before I actually start using them. Believe it or not, it used to be worse that it is with Mojave.

You also need to make sure you have the larger of 20% or 3x your largest file free space on your SSD.
 
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There's currently a lawsuit for iMacs because there's no dust filters. Maybe your computer just needs a cleaning (ie: overheating).

Mojave has been problem free for a lot of people, so I'm leaning towards third party software or a physical hardware issue.
 
I’m a newbie and catching up on macs. I come from 30 years of dos/windows. My husband has had macs for almost 30 years and has carried his OS forward with upgrades and migrations. I suggested to him that his new mac mini at work be left as a clean install and simply re-install apps and copy over his files. I just got my first mac (a mini) the other day and it has been rock solid. So smooth that he just put in his order at work for a mini to replace his broke d*ck 2013 imac. That thing beach balls on everything in el cap - we suspect the fusion drive. Our 2013 imac at (broken lcd at 3 yrs of age) does the exact same thing on el cap. Just sold a solid little 2010 mac mini that we upgraded with ssd and 8gb that ran faster and smoother on el cap than both the imacs with quad core and 16gb ram. BTW, I would look at upgrading to 16gb, what I consider a minimum now a days. That said, my 2018 mini is running mojave with 8 gb fine. I’ll upgrade to 32gb when I save up my pennies.
 
A lot of people don't need 32gb, I'd check activity monitor to see what you actually use. You might save a couple bucks. I find that most people can benefit up to 16gb though. At 8gb, while it will most certainly work and without too much performance penalty for casual use, there is some ram swapping going on even with minimal web browsing.
 
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why would you leave your mac on all day? what's the benefit? and what's wrong with sleep? if someone has a sleep-related issue, that's worth investigating. what does one gain by your idea?

My Mac Mini server runs 24/7/365...has SSD too. You mean you have never experience sleep issue on a Mac? It's well-documented...at least on laptops and has to do with the need to unplug the power adapter...old schoolers know this.
 
My Mac Mini server runs 24/7/365...has SSD too. You mean you have never experience sleep issue on a Mac? It's well-documented...at least on laptops and has to do with the need to unplug the power adapter...old schoolers know this.

not everyone has the same issues (unless, of course, they do). have used mac laptops since the 2400c (a fave), and have not experienced sleep issues (other issues, yes).

if we're talking about a server, it's a non-issue; of course it stays on. but otherwise, seems more logical (to me, anyway) to sleep a mac (or sometimes, shut it down), than to let it run constantly... but, whatever works.
 
A lot of people don't need 32gb, I'd check activity monitor to see what you actually use. You might save a couple bucks. I find that most people can benefit up to 16gb though. At 8gb, while it will most certainly work and without too much performance penalty for casual use, there is some ram swapping going on even with minimal web browsing.
I did check it and this Mac mini is a sippy sipper for memory usage. It might as well put a nipple on it (so to speak). So different from my Win7 machine running 8 or so Firefox tabs and having it use 8 gb of memory alone making my machine crawl.
 
No problems with Mojave on my MacbookPro 15 inch (2015) with SSD and on my friend's iMac 21,5 inch (2017) with Fusion drive.
 
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My Mac Mini server runs 24/7/365...has SSD too. You mean you have never experience sleep issue on a Mac? It's well-documented...at least on laptops and has to do with the need to unplug the power adapter...old schoolers know this.
Since I turned off sleep, I’ve had no problems.
 
I have clean installed Mojave, and now it's all good! Yeah!

I urged everyone who has issues with Mojave to do back up then reinstall Mojave
 
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Weird enough, more than 2 weeks with no issue, but now....THE PROBLEM IS BACK!

i run EtreCheck, i allowed full disk access, and this is what i got:


EtreCheck version: 5.1 (5020)

Report generated: 2018-12-25 03:01:51

Download EtreCheck from https://etrecheck.com

Runtime: 1:18

Performance: Excellent

Sandbox: Enabled

Full drive access: Disabled



Problem: No problem - just checking



Major Issues:

Anything that appears on this list needs immediate attention.

No Time Machine backup - Time Machine backup not found.



Minor Issues:

These issues do not need immediate attention but they may indicate future problems.

Heavy I/O usage - Your system is under heavy I/O use. This will reduce your performance.

Abnormal shutdown - Your machine shut down abnormally.

Limited drive access - More information may be available with Full Drive Access.



Hardware Information:

iMac (Retina 5K, 27-inch, 2014 - 2015)

iMac Model: iMac15,1

1 3.5 GHz Intel Core i5 (i5-4690) CPU: 4-core

8 RAM - Upgradeable

BANK 0/DIMM0 - 4 GB DDR3 1600 ok

BANK 1/DIMM0 - 4 GB DDR3 1600 ok

BANK 0/DIMM1 - Empty

BANK 1/DIMM1 - Empty



Video Information:

AMD Radeon R9 M290X - VRAM: 2048 MB

iMac 5120 x 2880



Drives:

disk0 - APPLE SSD SM1024F 1.00 TB (Solid State - TRIM: Yes)

Internal PCI 5.0 GT/s x2 Serial ATA

disk0s1 - EFI (MS-DOS FAT32) [EFI] 210 MB

disk0s2 [APFS Container] 1.00 TB

disk1 [APFS Virtual drive] 1.00 TB (Shared by 4 volumes)

disk1s1 - Macintosh HD (APFS) (Shared - 169.21 GB used)

disk1s2 - Preboot (APFS) [APFS Preboot] (Shared)

disk1s3 - Recovery (APFS) [Recovery] (Shared)

disk1s4 - VM (APFS) [APFS VM] (Shared - 2.15 GB used)



Mounted Volumes:

disk1s1 - Macintosh HD 1.00 TB (828.22 GB free)

APFS

Mount point: /



disk1s4 - VM [APFS VM] (Shared - 2.15 GB used)

APFS

Mount point: /private/var/vm



Network:

Interface en0: Ethernet

Interface en5: iPhone

Interface en1: Wi-Fi

802.11 a/b/g/n/ac

Interface en4: Bluetooth PAN

Interface bridge0: Thunderbolt Bridge



System Software:

macOS Mojave 10.14.2 (18C54)

Time since boot: Less than an hour



Security:

System Status

Gatekeeper Enabled

System Integrity Protection Enabled



32-bit Applications:

None



System Launch Agents:

[Not Loaded] 16 Apple tasks

[Loaded] 174 Apple tasks

[Running] 109 Apple tasks



System Launch Daemons:

[Not Loaded] 38 Apple tasks

[Loaded] 190 Apple tasks

[Running] 107 Apple tasks



User Launch Agents:

[Loaded] com.google.keystone.agent.plist (Google, Inc. - installed 2018-12-09)



User Login Items:

Remote Mouse.app (App Store - installed 2018-12-09)

(/Applications/Remote Mouse.app)



ShazamHelper (App Store - installed 2018-12-19)

(/Applications/Shazam.app/Contents/Library/LoginItems/ShazamHelper.app)



Internet Plug-ins:

QuickTime Plugin: 7.7.3 (installed 2018-11-30)



Time Machine:

Time Machine Not Configured!



Performance:

System Load: 1.37 (1 min ago) 2.44 (5 min ago) 2.35 (15 min ago)

Nominal I/O speed: 11.89 MB/s

File system: 21.21 seconds

Write speed: 717 MB/s

Read speed: 774 MB/s



CPU Usage:

Type Overall

System 2 %

User 3 %

Idle 95 %



Top Processes by CPU:

Process (count) CPU (Source - Location)

Other processes 10.64 % (?)

EtreCheck 8.25 % (App Store)

Remote Mouse 0.39 % (App Store)

Google Chrome 0.08 % (Google, Inc.)

Dock 0.04 % (Apple)



Top Processes by Memory:

Process (count) RAM usage (Source - Location)

EtreCheck 826 MB (App Store)

Google Chrome 259 MB (Google, Inc.)

iTunes 144 MB (Apple)

Mail 143 MB (Apple)

Dock 95 MB (Apple)



Top Processes by Network Use:

Process Input / Output (Source - Location)

mDNSResponder 67 KB / 48 KB (Apple)

Shazam 25 KB / 26 KB (App Store)

Mail 18 KB / 7 KB (Apple)

apsd 5 KB / 7 KB (Apple)

rapportd 901 B / 980 B (Apple)



Virtual Memory Information:

Available RAM 2.75 GB

Free RAM 114 MB

Used RAM 5.25 GB

Cached files 2.64 GB

Swap Used 0 B



Software Installs (past 30 days):

Install Date Name (Version)

2018-12-09 Remote Mouse (2.905)

2018-12-09 Gatekeeper Configuration Data (157)

2018-12-12 XProtectPlistConfigData (2101)

2018-12-14 MRTConfigData (1.38)

2018-12-15 Numbers (5.0)

2018-12-15 Pages (7.0)

2018-12-15 Keynote (8.0)

2018-12-19 Shazam (2.1)

2018-12-25 EtreCheck (5.1)



Diagnostics Information (past 7 days):

2018-12-25 02:49:53 Last Shutdown Cause: 3 - Hard shutdown



Directory /Library/Logs/DiagnosticReports is not accessible without Full Drive Access.



End of report
 
First of all. I leave my computers running 24/7 and have for the last 26 years. I worked IT and was a network manager in a previous life and have never shut my computers down every day. I find in some instances my computers seem to last longer than those that are shutdown everyday. Just my observances.
For the gentleman that suggested to turn off computer sleep in energy saver, I second this.

Now on to the OPs original problem. Are you experiencing lock ups and such while you are using it? Or is it just confined to sleep? I will tell you my 27" 2010 iMac started off with sleep problem you describe and then later on progressed to lockups and kernel panics. It was all traced down to a failing GPU because of the amount of heat generated by the larger iMacs. Not sure if this is your issue or not, just throwing it out there.
 
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