I’ve experience this 3 or 4 times now. It also happened with UE4.7.6.
OS: Win 8.1 with the latest update
CPU: Intel Core i5-4460 CPU 3.20Ghz
Memory: 16 GB (Also happened when I only had 8 GB of MEM)
Graphic Card : AMD Radeon HD 5450 1GB MEM
UE: 4.8.1 (happens with 4.7.6, 4.8.0 also) (executable not from source)
The repro is always the same;
Close the editor (Everything was saved before closing)
Close the launcher before the editor has “finished” closing.
Notice that you will get the blue screen with the mention at the
bottom of the screen of
REFERENCE_BY_POINTER
What I mean by Close the launcher before the editor has “finished” closing, is that It seems that windows is still in the process of shutting down the editor even if you do not see it on screen.
The number of application doesn’t seem to be a factor here but normally, I have Chrome open with 9 or so tabs open. Might have VS2013, Photoshop or MAX open as well. But it does happen when only chrome is open.
I know bugs can happen but when it crashes my entire system, then it’s a big concern, especially for data corruption.
In order to determine the cause of your blue screen, there is an application built into Windows called the ‘Event Viewer’ which generates and organizes logs for your computer. Follow the instructions below to track down the cause of the blue screen so we can determine if it is in fact the Editor and Launcher and not another application or program.
Simply press ‘windows key + w’ to pull up a search and type in ‘event’, then click on ‘View Event Logs.’
Microsoft Windows 8 Event Viewer
Find the text log file of your most recent crash and determine whether or not it was in fact the Editor and Launcher causing your computer to blue screen. If you are having a hard time determining this, you can send me the most recent ‘Critical’ log file and I can take a look.
In the critical,txt file, it seems to be reported after the crash.
In the error_kernel_event.txt, we seem to have the same thing.
In the error_bugCheck.txt, here is where I found that a dump file was created
And In dumpFile from crash.txt, this is where it mentionnes two interesting thing in the debugging details section:
All of my drivers are up to date. I actually had to downgrade the driver for my second video card (on which I don’t “use” UE4). I’m still monitoring the situation. But it’s kind of weird that it only happens with the editor.
No, It’s installed directly on my internal HDD (SATA)
My system as 2 video cards, 1 on board (Intel HD Graphics 4600) on which my 3rd monitor is attached to and 1 PCI (AMD Radeon HD 5450) on which I have my other 2 monitors.
I have to say that I haven’t encountered the situation since downgrading the Intel driver, But I also am more careful when shutting down the editor.
After spending some time with your logs, I can say that the Engine may have triggered the fault but the issue resides in a specific Windows Driver (ntkrnlmp.exe). Chances are the update that you are referring to corrected the issue with this driver and you will not have anymore issues. However I ran a quick search on the driver and found that it seems to be connected with the Computer’s readyBoot (Sleep) process and more often than not a simple upgrade to an incompatible driver corrects the issue.
