Lightroom: Soft Proofing causes screen freeze on secondary 4k monitor

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  • Updated 1 year ago
  • (Edited)
I have  a Laptop with HD screen and external 4K monitor.  The 4K external monitor works fine for most tasks ( with very small menu text as address elsewhere )  Soft proofing works on the HD monitor, but this monitor does not have the gamut or calibration of the 4K screen so I want to use it to edit Soft Proofing.  When I attempt Soft Proofing on the 4K monitor, the image re-draw fails.  I either get a blank image, or the prior image freezes, or other malfunctions occur.  If I have LR open in the HD monitor, then drag the whole LR window to the 4K monitor, the Soft Proofing will work for a bit, but if I open another image or make Develop corrections, the screen freeze occurs again.  I'm connecting the 4K monitor via a Nvidia GTX 860M driving the 4K UHD monitor via Display Port.

This really looks like a bug?  Any work around or configuration advice?
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Harper Meek

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Posted 1 year ago

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Carlos Cardona

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Have you tried turning off "Use Graphics Processor" in the Performance prefs? Also, you don't say Mac or Windows?
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Harper Meek

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Graphic Processor is on and apparently working ( no errors).  I've tried with it turned off to no real effect ( except somewhat slower overall response..).

I'm on Windows 10.  I believe I have current Nvidia driver. I have 8 Gigs of memory installed, but I don't think that is limiting as the Resource Monitor always shows a few Gigs available and the disk page rate does not seem to be impacted.  The same problem occurs with small ( 200K .jpg) and large ( 25M .dng) images.  I'm suspicious there is a bug ( or configuration problems) of some sort since this works fine on the smaller screen, and fails when the window is dragged to the larger screen...

Thanks for efforts...

 
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Harper Meek

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PS.  Running LR 6.10
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Jeffrey Tranberry, Sr. Product Manager, Digital Imaging

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What graphics cards on in this system? Are both monitors plugged into the same graphics card? Mixed graphics cards/drivers can cause issues. https://helpx.adobe.com/lightroom/kb/lightroom-gpu-faq.html#Stillhavingtroublebr
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Harper Meek

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This is a laptop.  Both screes are driven by the same Nvidia GTX 860M.  Current Nvidia driver as of a few weeks ago.  The external screen is connected via Display Port.  I normally have "use graphics processor" on, but have tried with it off to no effect.  Windows 10 / LR 6.10.  I really want to proof on the 4K screen since it has much better color response than the laptop screen.

Thanks for the efforts...
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Harper Meek

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Let me described one manifestation of the problem.  In Develop mode:

I can have a soft proof open in LR window on the integral HD monitor.  All works as expected:  Gamut warnings toggle on and off with corresponding warning colors appearing in image.  Gamut warning change when profile changed; image changes when " simulate Paper & Ink" toggled on or off. 

I can drag that window to the 4K monitor.  The image area is unchanged (except to redraw to fill the screen) .  Changes to Gamut warnings with window in 4K screen do not occur when toggled on or off, or when profile changed; image does not change when " simulate paper.." check box toggled.....
If I then select another image, ( from bottom film strip ) the main image does not update, even with new filmstrip item selected....  If i deselect the 'soft proofing' check box, functions then return to normal...

With LR remaining in  the 4K monitor, If i then check the 'soft proofing' check box, the histogram DOES NOT change to 'Soft Proofing'.  I can drag LR back to the HD monitor, the 'soft proofing check box remains selected, but the Histogram does not change to " soft proofing".  If I toggle the Soft Proof check box off, than back on, all works OK...

Sorry if this is a bit confusing....  Help is appreciated...