P: Panels and filmstrip black when switching to Develop

Rikk Flor:
The slider problem seems to be resolved after following steps to restart and reset preferences.
Thanks For your help.
-Gordon 

I installed the new .10 update. Then I imported some photos taken on Easter and several of them had a pink cast. I remembered to post about off slider behavior and went back and looked and those with the pink cast had a custom white balance. I never use custom
white balance and always use "As Shot". I've never had this happen before.

Adobe just release version 2015.10 with Camera RAW 9.10 in which they mention this release addressed Lightroom bugs with panel black outs

Been working with it for 4 hours without suffering panel black outs!
Hope this resolves the issue for good!!!

Just released by Adobe, new version of LR CC, with bug improvements for black out panels, Version 2015.10 with Camera Raw 9.10.   Maybe not totally resolved, but been working with it for 4 hours with no black outs.   

Gordon, 

Your issue seems like it isn't related and from the behavior suggests a problem with your Preferences file. 

to reset:

1. Close Lightroom.
2. Hold down [Alt/Opt]+[Shift] while restarting Lightroom. 
3. Overwrite the Preferences when prompted by the dialog.
4. Close Lightroom.
5. Restart Lightroom. 

Do things start behaving normally?

Now a new problem- with 2015.10, the side panels stay up, sometimes after a few seconds delay, but now in Develop, the sliders are doing odd things on their own. I will adjust clarity, and suddenly the image will turn gray  since vibrance has gone to the extreme left on its own. It seems to be quite random, as to timing and which sliders are affected, but mostly the sliders in the Basic section. This is on an iMac Sierra 10.12.4.
Has anyone else encountered this problem?
-Gordon 

thanks for that Sue Anne-I'll give that a try!  have a good weekend
sp

FYI...I am in  El Capitan 10.11.6
Mac Pro (early 2008), Graphics: ATI Radeon HD 2600 XT 256 MB, 14gb Ram   

I was using the first beta while it was still having a problem, one day I turned off the LR preference for the graphics processor. Was only using it for a short time that day but having no problems. Then the second beta came out that day so I turned the graphic card back on and updated. Still not having the problem. I assume the new beta fixed and I updated when  2015.10 came out and still have no problem but I see someone with the same old computer is having issues still. Could it be that turning the graphics card off and back on had some effect? Just a thought. Things are working fine for me. When I hide and show LR the panels go black as it comes and goes but once open they have been stable.

Sue Anne

William-thank you for the suggestion.  when I have a sec, I will try that.  I did think there was something recently that was valuable to use ( when I can get it to work) in the last few iterations, but I am not sure what that was at this moment.  Again, thank you.  sp

Simon: anecdotally that is untrue for me.  I've stayed on El Captain and never updated to sierra, and had all the patches Apple releases for EC.  I never had an issue until 2015.7 and on.  like I told Scott above, once I roll back to 2015.6 I have zero occurrence of this issue for many many months until I tried these new releases again. I am currently on 2015.9 and it's happening, but more consistent in the behaviour.

I work in IT and it looks like you guys have some serious problem keeping the state and redrawing the panels.  For me it's very consistent on when it will happen on 2015.9
1) you computer wakes from sleep (lid close) or screen auto turn off, and the window is minimized.
1a) if you are on developer module, once you maximize the panel will be gone
1b) if you are on library, when you move to developer
2) Occasionally when lightroom lose focus and you go back to the application.  everything will be normal but when you move module the panel will disappear
3) this one I can reproduce 100% right now.  When you minimize window, the "shrink animation" and the icon will display no side panel (black), but when you do a restore it has no issues.  However, when you change module it'll disappear.  A min/max cycle will bring it back.  This happens wether you start with library or develop.  I haven't figure out what the cause is to change it to this state.

You guys' temporary solution is basically forcing the application to some how reset the state and redraw the panels...