Multiresolution Subdivide Crash with render "Simplify" option #59647
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Reference: blender/blender#59647
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System Information
Operating system: Linux Mint 19
Graphics card: nVidia GTX 1080ti
Blender Version
Broken: All 2.80 builds (Buildbot and own builds)
Worked: 2.79
Short description of error
Blender instantly crashes if you use a higher subdivision than 7 with the Multiresolution modifier.
Exact steps for others to reproduce the error
EDIT:
OK, found it: I had "Simplify" enabled in my startup.blend.
If I uncheck this option all is OK. I can also re-enable it after subdividing the cube 10 times without a crash. It just crashes if Simplify is enabled while subdividing.
Added subscriber: @SteffenD
Added subscriber: @JacquesLucke
Works fine for me. I can go up to 11, which seems to be Blenders limit but also my RAM limit. How much RAM do you have?
Can you start Blender from the terminal with the
--debug
option and post the output here?Hmm... for me it happens on 3 completely different computers, both with my own compile and the buildbot versions of 2.80.
2 of the workstation have 64GB of RAM and a 1080ti, one is running Linux Mint the other Win10 x64. The third workstation has "only" 32GB of RAM and a 1080ti as well running Win10.
RAM can't be the cause here I think.
But I think I found something else which needs a bit more investigation on my side. If I load the factory settings before subdividing the cube it works! Now I'm trying to find the setting that causes this.
Must be the same on all 3 systems...
Here's a debug output with the crash:
OK, next step. It looks like it's not my user settings but my startup file that contains something that the Multiresolution modifier doesn't like.
If I load factory settings, all is OK. If I load factory settings and then manually load my startup.blend the crash is back...
EDIT:
OK, found it: I had "Simplify" enabled in my startup.blend.
If I uncheck this option all is OK. I can also re-enable it after subdividing the cube 10 times without a crash. It just crashes if Simplify is enabled while subdividing.
Multiresolution Crashto Multiresolution Subdivide Crash with render "Simplify" optionAdded subscriber: @mont29
Changed status from 'Confirmed' to: 'Needs User Info'
I cannot reproduce that here, neither with current master nor with any older 2.8x release.
Please attach here your startup .blend file…
Added subscriber: @Blendify
Changed status from 'Needs User Info' to: 'Resolved'
No activity for more than a week. As per the tracker policy we assume the issue is gone and can be closed.
Thanks again for the report. If the problem persists please open a new report with the required information.