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lightroom classic freezes my IMAC 27 inch 5K. post working on raw files

Forum|Forum|5 years ago
December 17, 2020
14 replies
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I am been using IMAC 27 inch 5K late 2015 model and I am been observing a very awkward issue with my lightroom classic. It seems to hang and then freezes my entire system forcing me to shut down my computer via the power button.

The glitch only seems to occur when working on LRC.

Can anyone help me how to fix the issue?

thanks in advance

Shovona

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Correct answer janmalycz

Hi!

I've spent about 2hours with Adobe support on remote desktop to solve this exact same issue. They totally DO NOT know that to do about it, or should I say, they don't know anything . Guy on support tried to persuade me that my network drive are what causes this problem! Asked me the same questions for at least five times. I'm totally pissed of!

Lightroom Classic 10.1 has a massive problem with GPU memory leak! Once the vido memory is more than 95% full, LcR overflows it and freezes whole system, makes it totally unusable for tens of seconds. Sometimes minutes.

The fix is quite easy, downgrade back to LrC 10.0 or disable GPU acceleration in 10.1.

This bug causes my whole system to freeze, show artifacts on screen, display green frames in video or disables video playback in macOS Big Sur 11.1 totally. Until I restart my iMac.

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Punkylex

Participating Frequently

On my iMac 5K 2015, the bugs seem to have been resolved with the 10.2 update. On top of that, the performances are much better than before. Thanks a lot to the Adobe developer team!

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Punkylex

Participating Frequently

Same problem here on my iMac 27" 5K 2015 with Radeon R9 M380 2 GB. The v10.1 and the last update (10.1.1) made the whole system freeze and obliged me to do a hard reboot by pressing the powerbutton. The 10.1.1 update didn't solve this HUGE bug. Adobe, this is unacceptable. Please solve this HUGE bug.

Ian Lyons

Community Expert

Since downgrading to LrC 10 doesn't remove any features but is largely free from the issues discribed above, then I recommend that you revert to version 10. If nothing else, you'll be free from the crashes and freezes.

janmalycz

Participating Frequently

Hi everyone! Adobe has just released a Lightroom 10.1.1

DO NOT UPDATE!!!

This version does not include fix for this GPU bug!

Tested on my iMac 5K late 2015. Still the same problem.

DdeGannes

Community Expert

At janmalycz, only one specific bug fixed.

See the screen capture from the Adobe Feedback Forum.

Mac users will be best advised to turn off the auto update feature for macOS and for Lightroom Classic. Make sure you know exactly what is an update and how it relates to your computer specifications.

Regards, Denis: iMac 27” mid-2015, macOS 11.7.10 Big Sur; 2TB SSD, 24 GB Ram, GPU 2 GB; LrC 12.5,; Lr 6.5, PS 24.7,; ACR 15.5,; (also Laptop Win 11, ver 24H2, LrC 15.3; PS 27.0; ) Camera Oly OM-D E-M1.

janmalycz

Participating Frequently

Bugfix in this update can also very well be not listed. It's a common thing among developers.

Especially considering how shamefully big this bug is.

Mr. DdeGannes, in the first place you should make sure not to defend Adobe in every way. So far, seems to me, you are the one who needs to improve your IT knowledge.

No doubt this is a really serious GPU memory leak bug. Mostly present among several 5K iMac models as GPU memory requiremtns for these screens are high and Adobe's frameworks simply allocate GPU memory not correctly.

Adobe had this (but bit different) problem many time before. So far, seems to me, you are the one who needs to improve your IT knowledge.

Cheers!

O

obertaucher

Participant

Just disable the GPU acceleration in the settings. Then it will work again ...

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PhotoGraphix

Known Participant

Disabling gpu or downgrading to 10.0 has no effect on mine ( iMac 27 2020...) ....can't work anymore....

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ric.aa

Participating Frequently

Have you rebooted your computer recently?

I found that when I shut my Mac down and restarted it that it seemed to
clean out the memory and HD buffer.

Good Luck, Ric

M

Marco5C80

Participant

Hi!

Same problem, same iMac, unbelievable!

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papaki1947

Participant

Having the same problem which just started. Disabled the GP accelerator and that seems to have done the trick. But what am I losing by doing that.

tatita379

Participant

Can you explain me how to do it? This is my first Imac (apple product) and I can't figure it out 😔😬 thanks

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obertaucher

Participant

Same IMac same problem ... Thank you for the hint to disable the GPU acceleration. Now it's working again ... 🙂

DdeGannes

Community Expert

That's the best option in my opinion. I experience no noticeable difference in performance whether I have it on or off.

Regards, Denis: iMac 27” mid-2015, macOS 11.7.10 Big Sur; 2TB SSD, 24 GB Ram, GPU 2 GB; LrC 12.5,; Lr 6.5, PS 24.7,; ACR 15.5,; (also Laptop Win 11, ver 24H2, LrC 15.3; PS 27.0; ) Camera Oly OM-D E-M1.

DdeGannes

Community Expert

At "ric.aa" ok I am pleased that reverting to LrC 10 has sorted out your problem and that's fine. Your iMac is five years old, which is "old" in the evolution of computer equipment. Your GPU processor is apparently no longer working with the updated version 10.1 and you have not provided specifics of your equipment so I am not sure that your GPU will be supported when the 10.2 update is released. What then?

In my earlier post, I thought that the better option was to turn off the GPU in preference to reverting to the earlier version and offered my reason why. I also have an iMac 2015 model and my GPU is supported.

Care to share the specifics of your GPU?

Regards, Denis: iMac 27” mid-2015, macOS 11.7.10 Big Sur; 2TB SSD, 24 GB Ram, GPU 2 GB; LrC 12.5,; Lr 6.5, PS 24.7,; ACR 15.5,; (also Laptop Win 11, ver 24H2, LrC 15.3; PS 27.0; ) Camera Oly OM-D E-M1.

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ric.aa

Participating Frequently

My graphics is: Intel Iris Pro 1536 MB

AMD Radeon R9 M370X

Type: GPU

Bus: PCIe

PCIe Lane Width: x8

VRAM (Total): 2 GB

Not sure what the correct method is. I had 10.1 installed and had to turn
off the GPU. It was suggested by someone else in this thread that they may
still cause some other issues because of the memory leak. So I went back
to 10.0 and turned my GPU back on and everything is working fine.

Sorry not sure what the right answer is. Sure would be nice if ADOBE
provided some insight.

DdeGannes

Community Expert

Ok, so your system and GPU are different than mine and also that of the original poster. You are using a Macbook Pro and the original poster is using iMac of the same year 2015 with different GPU so different issues and its why I was making the point that if you had created a new thread with your specific issue you would have been more likely obtained a response from another uses with the same equipment. Now that you are working fine with the previous version of LrC I guess that you can wait and see what the next update provides.

Regards, Denis: iMac 27” mid-2015, macOS 11.7.10 Big Sur; 2TB SSD, 24 GB Ram, GPU 2 GB; LrC 12.5,; Lr 6.5, PS 24.7,; ACR 15.5,; (also Laptop Win 11, ver 24H2, LrC 15.3; PS 27.0; ) Camera Oly OM-D E-M1.

DdeGannes

Community Expert

The thread is realy confusing, new post with different OS versions and Lightroom versions need to start a new thread. Not because most or all are performance related means they have to be dumped into the same thread. Allow the original post be focused on and get a proper response.

To wit, this is a user to user forum so the responses you get here are generally from users like yourself, who are trying to assist with problems and provide advice.

Feedback, new features and bug reports should be posted to the Photoshop Family forum where they will receive the attention of Adobe employees and engineers who can reach out to those who make changes to the application possible.

Regards, Denis: iMac 27” mid-2015, macOS 11.7.10 Big Sur; 2TB SSD, 24 GB Ram, GPU 2 GB; LrC 12.5,; Lr 6.5, PS 24.7,; ACR 15.5,; (also Laptop Win 11, ver 24H2, LrC 15.3; PS 27.0; ) Camera Oly OM-D E-M1.

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robert blu

Participating Frequently

Maybe this thread is confusing, but one thing is clear: many users with different hardware and different operating systems experience the freeze since upgrading from 10.0 to 10.1 the problem is not the machines or the operating systems but something related to the differences between 10.0 and 10.1

If not all GPU cannot supprto 10.1 maybe Adobe could have warned us! But Adobe simply says 10.1 is here 🙂

Personally I would like to thanks to all members of this forum who with their experience are able to help us Adobe Users. Thanks again.

DdeGannes

Community Expert

Just a couple of general comments here, there are several users injecting differing issues, so here goes. Just some food for thought

Adobe indicates min RAM requirement is 8 GB 16 Recommended. My view, particularly if you are using other processing software alongside LrC, think 16 GB min more would be better. LrC needs 8 GB for itself and your OS.

e.g. If you use the "edit in PS or another app" the other application will have to boot for you to work in it. I the case of PS, Camera Raw plugin will process the raw file.

My operating system is similar to other posters and I have no problem with the GPU operation. To my thinking disabling the GPU should not be an issue and quite frankly I experience little benefit if any when the GPU is activated, See the screen captures and the signature for additional info on my system.

Regards, Denis: iMac 27” mid-2015, macOS 11.7.10 Big Sur; 2TB SSD, 24 GB Ram, GPU 2 GB; LrC 12.5,; Lr 6.5, PS 24.7,; ACR 15.5,; (also Laptop Win 11, ver 24H2, LrC 15.3; PS 27.0; ) Camera Oly OM-D E-M1.

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PhotoGraphix

Known Participant

I currently have 24 Gb on my iMac and I am experiencing that pb.

This iMac is brand new, 2 weeks old...

Disabling GPU seems effectivly with no effect with performances nor issues...

I downgraded to 10.0 just to see..Will keep you updated...

tvbmedia

Participant

Downgrading did the job. I had similar problems when opening DNG's in the latest PSD version. So, I'm back to the old versions and thing's run smooth. So, @ ADOBE: fix your stuff! And do it quickly! It's way too expensive to keep it on the customers to fiddle around and figure it out. Everybody who uses these products for making a living is ultra screwed. It also teaches me to disable all auto-updates! :-((

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