Satisfied with 5K EXCEPT for the spontaneous reboots!

[redheeler]

When you put in the Crucial RAM you purchased, was that in addition to the RAM it came with, or did you remove the Apple supplied RAM and replace it with the Crucial parts?

i.e. ... were there any times you experienced reboots and none of the original RAM was installed?

What are you hinting at here, that the Apple-supplied RAM may be defective?

If so the machine should be exchanged for one with good RAM.

---

But this screen is perfect, temps and noise levels are perfect, so I really want to give it a chance.

Wow, that is a rare find. My screen is ever so slightly warmer toward the bottom.

Mine has no dead or stuck pixels though, considering how many pixels there are I consider that to be quite lucky.

 

[hfg]

What are you hinting at here, that the Apple-supplied RAM may be defective?

If so the machine should be exchanged for one with good RAM.

Well, that certainly is a possibility. The issue sounds very much like a RAM problem. The Crucial RAM he purchased was initially suspected and was returned, but possibly before he tried all combinations of original and purchased parts.

While he should certainly be entitled to a working computer from Apple, if it is determined that the RAM is, or may be, at fault here, it may be worth exchanging just the RAM, rather than the entire iMac which he is otherwise happy with. The new iMac may have other problems less solvable than memory problems.

 

[Cape Dave]

OK, I have done a fresh install of OSX. Super default. I learned the hard way with the last install what NOT to install.

So, now that I have done this, I will install only known good apps and also run the full test on the Ram from bootable USB stick probably tomorrow sometime.

I brought NOTHING over from the old install. I have it on a Carbon Copy Cloner external SSD should I need to access it for some reason, and I am sure I will. Bit for now, I am going to drag over data files only.

Let's see if my suspicion is correct, that something I brought over messed with a config file of some sort and caused the issue.

At least, this way, we will find out once and for all.

FYI, I may be showing the computer to a friend tomorrow, so that will of course tempt fate

So happy to be on a lean mean machine.

 

[SaSaSushi]

I agree with hfg. I can't think of a software scenario that would result in the symptoms you're experiencing. The only exception might be incompatible third-party drivers.

 

[Cape Dave]

I agree with hfg. I can't think of a software scenario that would result in the symptoms you're experiencing. The only exception might be incompatible third-party drivers.

Well, this way we will know for sure. I had some real crap software on that machine. And since it was my first Mac, I learned by breaking. There were some weird issues with adware. Seemed like malware.

I have learned my lesson. Put on what I need.

For some reason I believe this will be fine. I am optimistic by nature

Still 2 or 3 days for return window, so I will be keeping a sharp eye on it.

 

[SaSaSushi]

Still 2 or 3 days for return window, so I will be keeping a sharp eye on it.

It may be 2 or 3 days to return the machine for a refund but you've got one full year to send a defective machine back to Apple for repair or replacement under the limited warranty. So there's probably no rush unless you're considering giving up on the purchase altogether and going for a refund if this particular Mac has problems.

 

[Cape Dave]

It may be 2 or 3 days to return the machine for a refund but you've got one full year to send a defective machine back to Apple for repair or replacement under the limited warranty. So there's probably no rush unless you're considering giving up on the purchase altogether and going for a refund if this particular Mac has problems.

Good point. However, one thing is that the mere thought of someone taking apart this "sealed unit" makes me crazy

And if I DID return this one, I may consider a different move. A Mac Pro with my old monitor (yikes) until a suitable 4K monitor came around.

SO far have been using it for 3 hours and have put it to sleep once with no issues

So, if anyone happens to be say, betting on this, those are the current stats

 

[Cape Dave]

So far today, all is good.

I think this has fixed it. I strongly suspect that something went awry during the initial migration.

I do remember that right near the end of the previous migration, something went amiss. I thought it self destructed, but after 2 reboots it SEEMED to work

Time will tell. I am very optimistic.

 

[robgendreau]

Take a look at the Console logs. I suppose you don't have the older ones, but they will often indicate what caused the crash and reboot. Or at least indicate likely suspects or eliminate those likely suspects.

 

[Cape Dave]

Take a look at the Console logs. I suppose you don't have the older ones, but they will often indicate what caused the crash and reboot. Or at least indicate likely suspects or eliminate those likely suspects.

I still have the old machine I can boot up from external SSD. I did check those files and not a one made any sense at all to me.

So far, all is very good. Wakes up from sleep w/no issues.

I think the infamous reformat has done its work once again. I am a firm believer in a fresh start each new computer. I went again that belief and felt the heat

 

[iMcLovin]

It sounds like a ram issue, Ive experienced something similar before. But nonetheless I wouldn't settle for turning of sleep mode an be happy with it, it shouldn't happen period. Ive had my retina imac for 3 weeks now, with auto sleep after 15 mins. Not a single crash since I bought it.

 

[smithrh]

I agree with hfg. I can't think of a software scenario that would result in the symptoms you're experiencing. The only exception might be incompatible third-party drivers.

I had an issue with my 2012 27" iMac with rebooting - the thing in common was always core/cpu #2. I'm thinking hardware...

Called Apple support, they recommended a scratch install, I did it to humor them and to smooth the return/troubleshooting process.

Hasn't rebooted since, 18 months on. So, while I agree it's not common, it does happen.

 

[newbish]

hi, i've received sudden restarts as well on my riMac, i have crucial rams in them. mine is more of kernel panics though.

the sudden restarts happen after a period of sleep time especially, and sometimes after waking up it doesnt happen immediately. (probably using it for almost a minute before it happens)

just to add on, i do face memory leaks in yosemite (rarely but it happens) where my physical mem is totally used up and they added another 30GB++ of swap.

a reboot will put it back into proper condition but now i cannot safely pause all my work for the day.

 

[Cape Dave]

Update: It is like a different machine. All the little stuff that was not quite right now works perfectly.

I wish I did not send back the ram

Although luckily 8GB is fine for what I do. My attitude with this computer is: Less is more. Except for the pixels, of course

Very glad I did not send back.

For the record, I made the wrong choices when migrating 300GB from old mini. No need to bring over "computer settings".

That, plus some other corruption that most likely happened at that time is what put the crimp in my iMac.

It never pays to be lazy when setting up a new computer. A fresh install is a big part of getting all the value out of the new computer.

 

[MrGimper]

I ordered my retina iMac with 8GB RAM and swapped in the 32GB crucial RAM i had in my late 2012 iMac. Not had any issues so far on the retina, and had non on the 2012 previously.

 

[Cape Dave]

Yeah, it was not the Ram. I may get some more again, may not. Just so happy to have a machine that works like a $3000 computer should

 

[hjalte]

Yeah, it was not the Ram. I may get some more again, may not. Just so happy to have a machine that works like a $3000 computer should

Hey Dave...

Just curious, has everything been running smoothly since?

 

[Cape Dave]

Hey Dave...

Just curious, has everything been running smoothly since?

Yes! Smooth sailing since! It is a dream machine. I am finding that for what I do I will not even need to get more RAM. The "measly" 8GB is just fine for me.

Smooth, fast, and quiet. Just what I was looking for. And the screen, well, that what the whole thing is about! I feel sorry for those not using the Retina screen

I should mention that the one thing I did was change the Energy setting in preferences. It just turns off the monitor rather than put it to sleep.


Maybe that should bother me, but it does not. I was never a big fan of computer sleep over the years.

 

[hjalte]

Yes! Smooth sailing since! It is a dream machine. I am finding that for what I do I will not even need to get more RAM. The "measly" 8GB is just fine for me.

Smooth, fast, and quiet. Just what I was looking for. And the screen, well, that what the whole thing is about! I feel sorry for those not using the Retina screen

I should mention that the one thing I did was change the Energy setting in preferences. It just turns off the monitor rather than put it to sleep.


Maybe that should bother me, but it does not. I was never a big fan of computer sleep over the years.

That is awesome. Thanks for the update

 

[Cape Dave]

hi, i've received sudden restarts as well on my riMac, i have crucial rams in them. mine is more of kernel panics though.

the sudden restarts happen after a period of sleep time especially, and sometimes after waking up it doesnt happen immediately. (probably using it for almost a minute before it happens)

just to add on, i do face memory leaks in yosemite (rarely but it happens) where my physical mem is totally used up and they added another 30GB++ of swap.

a reboot will put it back into proper condition but now i cannot safely pause all my work for the day.

Try changing your energy settings to this:

https://www.dropbox.com/s/xgog0agwr211zsy/Screenshot 2014-12-29 12.38.46.png?dl=0

It worked like a charm for me.