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Can't move adjustment brush across image

New Here ,
Aug 08, 2020

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Hi, all! I'm having an intermittent issue that I can't seem to troubleshoot on my own. After having worked in Lightroom Classic for a while, I can no longer move the adjustment brush across the image and instead it just sticks to the borders of the image. The RGB values by the histogram shifts, so it looks like it really moves, but that this isn't reflected in the interface. A reboot of the computer fixes this for a while. I've tried switching of graphic acceleration, but to no avail. Has anyone experienced something similar? Can you think of a reason for this behavior? I'm on an 2019 Apple iMac on Mac OS 10.15.6 (latest) and have all updated all Adobe software.

I've put up a video here showing what I see: https://www.dropbox.com/s/780pqsz0thgbrp1/IMG_1489.mov?dl=0

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Can't move adjustment brush across image

New Here ,
Aug 08, 2020

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Hi, all! I'm having an intermittent issue that I can't seem to troubleshoot on my own. After having worked in Lightroom Classic for a while, I can no longer move the adjustment brush across the image and instead it just sticks to the borders of the image. The RGB values by the histogram shifts, so it looks like it really moves, but that this isn't reflected in the interface. A reboot of the computer fixes this for a while. I've tried switching of graphic acceleration, but to no avail. Has anyone experienced something similar? Can you think of a reason for this behavior? I'm on an 2019 Apple iMac on Mac OS 10.15.6 (latest) and have all updated all Adobe software.

I've put up a video here showing what I see: https://www.dropbox.com/s/780pqsz0thgbrp1/IMG_1489.mov?dl=0

Topics

Performance, Problem or error

Views

57

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Adobe Community Professional ,
Aug 08, 2020

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First thing to try is turning off the option to use the GPU in LrC. You find that option in the LrC Preferences on the Performance tab. 

 

Then Test.

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New Here ,
Aug 08, 2020

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Hi! Yes, I tried that a couple of times, but sadly it didn't help.

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Adobe Community Professional ,
Aug 08, 2020

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Try placing your Cursor on the image and then call up the Adjustment brush by using the keyboard shortcut k (lowercase K).

What happens then?

 

The only other suggestion I have is Restart everything, LrC and your computer, when this happens.

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New Here ,
Aug 08, 2020

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I'm having the same issue also when calling up the brush with the keyboard shortcut, I'm afraid.

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LEGEND ,
Aug 08, 2020

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WACOM?

Your video monolog gives me a question, What Mouse? Mouse on/with WACOM as opposed to touch on WACOM?

 

Or a regular mouse?

 

Just another Adobe customer; My Sys; APP: LRC 9.4, PS 21.2.1; CMP: WIN WS 16GB OS 10 v1909 (18363), mid 2015 MBPr 15” 16GB MACOS 10.15.6; 4K EXT DSPY; CAM: Canon 5D Mk III, Fuji X-T3

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hertze LATEST
New Here ,
Aug 08, 2020

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Ah, I have an Apple Magic mouse (though I have the same issue with a Logitec mouse I've tried). I also have a Wacom connected to the computer. I've tried deconnecting that when the issue starts, but it doesn't help. My issue is with trying to move the brusg using the mouse or when using the pen on the Wacom. For some reason I can move the brush using touch on the Wacom (one finger).

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