P: desktop: Spherical panorama creation hangs

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Explorer ,
Jun 04, 2019 Jun 04, 2019

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Hello all,

I'm
trying out the new Adobe Photoshop Lightroom, coming from Lightroom 6.
One of the features that is critical for me is the stitching of spherical panoramas. Lightroom 6 is decent, but often creates a visible seam or other smaller mistakes, and I hope that the latest Lightroom is better. Unfortunately, Lightroom CC seems to hang after a while. Creating the preview works fine. When actually rendering the full panorama it uses 100% CPU as expected, but later it reduces to 18% CPU, and a few minutes later it's down to no CPU usage at all. The user interface is still responsive, it's only the merging itself that hangs in limbo.


Has anyone experienced this? Is there a solution? I have unticked "use graphics processor" in the p, but it didn't change anything in the behaviour. The merging process just stops mid-way.

I'm stitching 26 DNG files shot by a DJI Mavic 2 Pro drone. Below you can see where the "Performing Merge" step hangs.



Image is not available




This is my system info:

Lightroom version: 2.3 [ 20190502-0902-47ed471 ] (May  3 2019)Operating system: Windows 10OS Version: 10.0 [17763]Application architecture: x64System architecture: x64Logical processor count: 8Processor speed: 4,0 GHzBuilt-in memory: 32650,5 MBReal memory available to Lightroom: 32650,5 MBReal memory used by Lightroom: 334,5 MB (1,0%)Virtual memory used by Lightroom: 418,2 MBMemory cache size: 189,7 MBInternal Camera Raw version: 11.3 [ 197 ]Maximum thread count used by Camera Raw: 5Camera Raw SIMD optimization: SSE2,AVX,AVX2Camera Raw virtual memory: 22MB / 16325MB (0%)Camera Raw real memory: 22MB / 32650MB (0%)System DPI setting: 120 DPIDesktop composition enabled: YesDisplays: 1) 2560x1440Input types: Multitouch: No, Integrated touch: No, Integrated pen: No, External touch: No, External pen: No, Keyboard: NoGraphics Processor Info: DirectX: NVIDIA GeForce GTX 970 (26.21.14.3086)Application folder: C:\Program Files\Adobe\Adobe Lightroom CCSettings Folder: C:\Users\Sybren\AppData\Roaming\Adobe\Lightroom CC
Bug Acknowledged
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macOS , Windows

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38 Comments
New Here ,
Jun 04, 2019 Jun 04, 2019

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I have suffered the same problem in a iMac . After several chats with Adobe technicians and Apple techs too, following their instructions I uninstalled several times the Adobe software, I formatted my iMac, and even I sent the iMac to Apple in order to install a former version of the IOS . No clear root cause and solution was found .It seemed to be some incompatibility among version of Adobe and windows or Apple operating system.
After several weeks of tryouts without success
What I am doing is try to avoid the use of many pictures ( no more than 6-7) to generate a Pano.

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Explorer ,
Jun 04, 2019 Jun 04, 2019

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Eek, that doesn't bode well. To be honest, I'm not going to pay for Lightroom CC at all if it means I have to considerably lower the image quality.

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Adobe Employee ,
Jun 04, 2019 Jun 04, 2019

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Does Lightroom 6 merge these files for you?

Senior Product Manager - Customer Advocacy - Digital Imaging

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New Here ,
Jun 04, 2019 Jun 04, 2019

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I did it always with the latest version of LR, not with LR6

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Explorer ,
Jun 04, 2019 Jun 04, 2019

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For me the merging works in LR6, albeit with a seam between the left and right side of the equirectangular image (just in color, not in positioning of the images).

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Adobe Employee ,
Jun 05, 2019 Jun 05, 2019

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Would you be willing to share via Dropbox or similar a set of DNGs which fail to merge so that we can test with them?
Rikk Flohr - Customer Advocacy: Adobe Photography Products

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Explorer ,
Jun 05, 2019 Jun 05, 2019

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@rikk Flohr: sure. Is there a way to share those in private?

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Explorer ,
Jun 05, 2019 Jun 05, 2019

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Here are some DNG files to test with: https://stack.stuvel.eu/s/EJVNymZ3PbUaZX2

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Adobe Employee ,
Jun 05, 2019 Jun 05, 2019

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Got them. You can pull them down now.

My Pano merge with your files was successful on Mac 10.14.4

What video card do you have in your Windows machine?
Rikk Flohr - Customer Advocacy: Adobe Photography Products

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Explorer ,
Jun 05, 2019 Jun 05, 2019

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It's an NVidia GeForce GTX 970. For more system info please see the system info I pasted in my original post. The forum put everything in one continuous line for some reason, it didn't do that when I created the post, but it's still somewhat readable.

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Adobe Employee ,
Jun 06, 2019 Jun 06, 2019

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I was also successful at merging the Panorama on my Windows machine with your DNG files. 

First stop would be to go to NVidia's site and make certain you are using their current driver version for your GTX970 (the card I am using also).  The Windows merge did take longer than the Mac merge did. Are you certain you are giving it enough time?
Rikk Flohr - Customer Advocacy: Adobe Photography Products

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New Here ,
Jun 06, 2019 Jun 06, 2019

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Here are one of my shortest HDR+Pano, where I had problems. Run first HDR+Pano in LR and later , without closing LR, edit the DNG file in PS
https://wetransfer.com/downloads/38887666309f3a1cf2c78f2203eb048020190605150416/e4f444ef5869a397c13f...
Now is running well, (??)

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Adobe Employee ,
Jun 06, 2019 Jun 06, 2019

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@Sybren

We'd like you to do the following:

  1. Close Lightroom
  2. Open Lightroom
  3. Attempt to generate the panorama.
  4. When it stalls, create a diagnostic log (Preferences>Account and hold down [Alt] Key.
  5. Send that log to us. 
Thanks!
Rikk Flohr - Customer Advocacy: Adobe Photography Products

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Explorer ,
Jun 06, 2019 Jun 06, 2019

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Image is not available


Image is not available


Now I get this error.

I created a diagnostic log, but I can't upload it here (only PNG, JPG, or GIF files are allowed). You can download it from https://stack.stuvel.eu/s/W7PyNL9Nc81ryU3

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Explorer ,
Jun 06, 2019 Jun 06, 2019

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Here is the log: https://stack.stuvel.eu/s/FpQZv7DmOicicQO
I'm assuming that I'm giving Lightroom enough time, because it stops using CPU. There is no reason to stop using CPU while stitching a panorama photo.

I've also ensured that I'm using the latest NVidia drivers, and rebooted multiple times, all to no avail.

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Adobe Employee ,
Jun 07, 2019 Jun 07, 2019

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@Sybren

Apologies if this has been covered already and I didn't see it, but are you able to merge a subset of the images, say 2, successfully? If so, that would seem to indicate some sort of resource issue being the root problem with the bigger source image set.

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Explorer ,
Jun 07, 2019 Jun 07, 2019

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@kjetil good idea. I can stitch one group of the first 14 photos together just fine, and it's pretty fast too. However, the other 12 photos don't want to stitch together, then Lightroom hangs again. Splitting the last group of 12 into 6+6 and merging each group works. Of course the projections are wrong, so I can't merge the three results together; this isn't a solution, but it does give a better picture of what's going wrong.

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Adobe Employee ,
Jun 07, 2019 Jun 07, 2019

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Your diagnostic log suggests that you aren't running out of memory or main volume disk space, but I'd suggest watching them manually while the merge is going on, just to be sure that they at no point become constraints. (My MacBook Pro merged the full set, but it caused a fair amount of usability issues along the way.)

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Explorer ,
Jun 07, 2019 Jun 07, 2019

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I made a mistake -- the last 6 photos don't stitch. It hangs there.

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Explorer ,
Jun 07, 2019 Jun 07, 2019

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Splitting the last 6 into 3+3 does work, though. Strange.

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Adobe Employee ,
Jun 07, 2019 Jun 07, 2019

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Interesting. Almost as if there is a problem with one of the image files on disk that your Lightroom instance is using. I assume you got the 26 originals that you provided to us off the memory card? Or did you export them from Lightroom? If the former, maybe try re-importing the images from the card, for another data point.

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Adobe Employee ,
Jun 07, 2019 Jun 07, 2019

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Oops, I didn't see your 3+3 message before I posted my last one. Disregard 🙂

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Explorer ,
Jun 07, 2019 Jun 07, 2019

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The DNG files are originals from the drone (DJI Mavic 2 Pro), nothing second-hand.

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Adobe Employee ,
Jun 07, 2019 Jun 07, 2019

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Can you list the file names of the 6 that will not merge, just so I'm sure which ones are the 'last 6'?

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Explorer ,
Jun 07, 2019 Jun 07, 2019

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Good point -- Lightroom didn't have the ordering I expected. It's those: https://stack.stuvel.eu/s/DPqu8PQCyXIOo2S (7-12)

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