I just crashed again, so bumping. 

Hi Victoria.  I'm using a utility called "Sizer" to lock the primary and secondary windows to 1920x1200.  I'll let you know what happens.

It seems more likely this is an LR issue, or at least something specific to how LR interacts with the video driver, no?  If it were strictly an internal driver-fault, I would expect to see a bluescreen with a mention of an ATI dll.

Will report back when I have more.

Yeah that's what I've done.  Sizer let's me assign a WxH number of pixels to an app, so for example I can tell it to "size" LR to 1920x1200 even while the display is running at 2560x1600.  So far no crash, but I'd like to go a few days before I feel comfortable reporting back for sure.  The issue has been squirrely and inconsistent.

Bummer, it just crashed again.  This is with both windows (not screens, just the LR windows) locked to 1920x1200.

I also reinstalled LR4.1 today just for grins.

Problem signature:

  Problem Event Name:    APPCRASH

  Application Name:    lightroom.exe

  Application Version:    4.1.0.11

  Application Timestamp:    4fb2266f

  Fault Module Name:    StackHash_0048

  Fault Module Version:    0.0.0.0

  Fault Module Timestamp:    00000000

  Exception Code:    c000001d

  Exception Offset:    000000002f6499a2

  OS Version:    6.1.7601.2.1.0.256.1

  Locale ID:    1033

  Additional Information 1:    0048

  Additional Information 2:    00488ae103b27b53b750fd0a6befe5ac

  Additional Information 3:    3ff7

  Additional Information 4:    3ff7fba6a8eae8d3bb747e40a2be9b11

Hi Chaos.  Can you do some experimenting to see if the crash goes away when using only a single display?  It would be helpful to know if your crash is the same as mine, or something else entirely. 

My particular issue isn't likely to be caused by the volume of images.

FWIW I'm not running crossfire - single card only.  Would you be willing to try 12.3 single display, and if that doesn't work then 12.6 single and dual?

Oh and to confirm - you're getting a LR crash, correct?  Not a BSOD?

Oh cool.  So are you on 12.6 now?

Crazy.  I just had the same crash, except this time I'm on my laptop.  Completely different machine, but still the common thread is two screens.

I have the laptop's display + an external Dell 2407 WFP, with both screens in use for LR.

Still an ATI video card, but a 7690M (vs a 5870 in my desktop.)

Updating the driver in this machine isn't easy, because it supports switchable graphics.  (But yes, I'm on the ATI card at the moment.)

Hi Victoria.  I see a thread over there that's about 10 months old and seems to describe my issue.  It was originally created to discuss LR 3.4, though as comments progress eventually we wind our way up to 4.1RC.  Would you recommend starting a new thread, or bumping the old one?

http://feedback.photoshop.com/photoshop_family/topics/lightroom_crashe s_with_frequent_flipping_between_pictures_when_the_secondary_display_l oupe_view_is_enabled

Anyone else experiencing this issue might pop over and click the +1 button to help us get some attention.

[Edit:The OP over there is on an ATI card, but a commenter jumps in a month ago with the same issue on nVidia.  I wonder if we're barking up the wrong tree with graphics drivers?]

Message was edited by: Digihotaru

Aha!  We might be on to something a little revealing.  Dan Tull responded to the thread in the bugs forum, and while he never fully got to the bottom of the issue, he was working on the theory that it was related to custom monitor profiles.  This would be true for 100% of my machines.  Could others here who have had the same issue also comment on whether they're using custom profiles?

We could be a lot of help by getting some minidumps to Dan to look at.

Here's the thread in the bug report forum:

http://feedback.photoshop.com/photoshop_family/topics/lightroom_crashe s_with_frequent_flipping_between_pictures_when_the_secondary_display_l oupe_view_is_enabled

And here are the instructions for configuring your Windows computer to collect mini-dumps:

http://msdn.microsoft.com/en-us/library/bb787181(v=vs.85).aspx

These are not the same as the dumps that your computer creates during a BSOD, so it's important to actually read through that MSDN article, make the configuration changes, and start getting LR to crash again.

Dan has a gmail address that he provides in the bug thread so we can send the minidumps to him, so I'm going to assume that it's ok to share that here, too.  dantull@ you-know-the-rest.

This is continuing on Catalyst 12.6, but at least I'm home now so I've sent a dump over to Dan.  Hopefully we'll get somewhere!