Please try Disabling the use of Graphics Processor in Lightroom.
- Open Lightroom
- Go to Edit>>Preferences>>>Performance
- Uncheck "Use Graphics Processor"
- Click OK
If it does not help.
- Update your Graphics card
- Remove all External Devices once as they may cause the Application to hang.(Cards,Phone,External hard drives)
Let us know if that helps
Thank you for your suggestions.
I have almost everything disconnected already from this Win7 64-bit Pro machine. My images are on a USB3 Western Digital MyBook Duo external in Raid 1 (mirrored). So that has to stay connected. I have that connected at the back plane to a mobo USB3 connector. I usually pull the Lexar USB3 card reader out of a front panel header when it is not in use.
No phones or other external devices. Sometimes a Canon 9000Mk2 printer on USB2. There is a Microsoft keyboard connected wirelessly over USB2.
The graphic card has been fine since its late 2014 purchase: an AMD-driven Radeon 290 from MSI. I believe it is 1Gig VRAM. AMD just updated the interface but the AppHang problem predates this.
Oddly, the update file chosen by AMD after polling my machine was the "without .NET" version" never saw that before. The .NET service is started.
The hang just happened again before writing this -- at the time of switch from Library to Develop module. Usual place to hang.
Can the catalog cause this?
The AMD graphics card is most likely the cause of your problems. Why didn't you try Akash's first suggestion of disabling the graphics processor? If that addresses the problem, then you could try AMD's recent beta driver: Adobe Photoshop Lightroom Help | Issues with Lightroom CC/Lightroom 6 and AMD graphics cards | Win
I did turn off the card for a session of an hour and there were no issues, then turned it on again and lo and behold another hang. So you are on to something. Are there other people having trouble with AMD drivers?
I will kill the graphic card again in Prefs, restart and look at that new driver you referenced. I will get back here with any other info I can find.
Incompatibility between LR 6 / CC 2015 and graphics cards is one of the most common problems reported here, especially with AMD cards. See Adobe Photoshop Lightroom Help | Lightroom Graphics Processor Acceleration (GPU) Troubleshooting & FAQ for more information.
Also, unless you have one of the new 4K or 5K displays, most people seem to be reporting little or no benefit from keeping the graphics processor enabled, and many have reported that it actually slows things down. (The graphics processor is only used in Develop.)
I really appreciate your answer. Did not see any messages about the AMD gear issue. I did install the beta driver you linked to (v15.8) and I may try leaving the processor enabled... after all it is the Dev module that I'd want to move quickly (well, and scrolling, oh yeah, and preview generation... better give up resistance and build a Skylake box.. wait, the Photoshop and Lightroom tasks SLOWED down in two reviews I read.) I do NOT have a super-high res monitor but I do try to use three non-super duper ones. Just "good", I think.
We're always chasing elusive performance gains. Then a glitch ruins productivity for a few days or weeks.All those seconds saved and hours wasted later. Ha!
It's good to try to have a sense of humor about all this.