2.20 Editor crashs

[Amerio.Stephane]

Hello, the 2.20 editor crashes a lot on me. Here are some dumps, hope these helps...editor_crash_dump_4530b126_0.zip

[silent]

Hi Stephane,

Thanks for the crash dumps, send them to our QA team. In the meantime could you please check if switching to Vulkan will improve Editor stability?

Also it would be nice to check the engine / editor log file when crash appears. It looks like engine is trying to load some file from disk and got unknown error. Maybe crash related to the content itself (migration?).

Thanks!

[Amerio.Stephane]

Hi, strangely it looks like these happens only when launching from a USB attached SSD drive. The drive have been checked off course, cable is ok too, and multiple successive launches sometimes works, sometimes crashes. So something related to the drive or its latency?

In any case, there is nothing in the logs, and it works perfectly when launched from an internal drive. 

I understand that the drive may be at fault somehow, but maybe try not to crash so at least I could save my work in progress..., or give a more explicit message...

[silent]

It would be quite hard to print this message, since the crash occured in OS level (crash in c++ runtime):

If we attempt to log and check every file, the performance may decrease by up to 10 times. We will do our best to reproduce this issue on our side and verify if there is a consistent way to get crashes.

Could you please share your motherboard model, USB drive model, and Windows version? Also, is the drive connected to the front or back panel of the PC, and which cable are you using?

On the high load the power consumption of the device may be quite high and it can disconnect for a fraction of a second - that would be enough to get file read error and crash. Try to plug SSD to a different USB port or provide an external power to it to check if that helps to reduce power issues.

Thanks!

[Amerio.Stephane]

Good points, I'll try another USB ports (I used the front one, but not much choice with laptops...). For info, I have the same issue on multiple PC, different PC brands, different SSD (M2, Samsung). Same files copied to onboard disk and everything works fine. I also suspect it may be due to micro-disconnection, that are transparent to the Windows explorer but not to the low level API file read.

For more context: for some projects, I have to use an external SSD because the onboard SSD drive is too small.

[silent]

Thanks for the clarifications.

You might find that using an additional USB hub with external power provides more stable behavior. Could you please try connecting through one and see if that makes any difference?

[Amerio.Stephane]

Just tried, no differences, still crashes randomly (USB in the front or back, different USB drive, different PC). And again, same files copied to internal drive = works perfectly (and I do mean copied, not just from the same repository).

All stations are DELL desktop 3680 or DELL laptop 7780. This is very strange, but it can definitely be some USB shenanigans. Oh well, I'll have to adapt...

[silent]

Yes, but have you tried USB HUB with external power? Still crashes?