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Fixed in 2021.2.X
Fixed in 2019.4.X, 2020.3.X, 2021.1.X
Votes
0
Found in
2019.4.20f1
2019.4.21f1
2020.2.2f1
2021.1.0a6
2021.2
Issue ID
1319336
Regression
Yes
Crash on PAL_LocalIPC_IsConnected when IPC fails on launch
How to reproduce:
1. Open the project attached by the user from "Berat.zip"
Expected result: When IPC fails to connect, should fall back to sockets
Actual result: Editor crashes
Reproducible with: 2019.4.20f1, 2020.2.2f1, 2021.1.0a6, 2021.2.0a7
Not reproducible with: 2018.4.32f1, 2019.4.19f1, 2020.2.1f1, 2021.1.0a5
Notes:
1. Majority of cases come from China, although there are exceptions
First lines of stack trace:
0x00007FF628AFB825 (Unity) PAL_LocalIPC_IsConnected
0x00007FF6288F15A2 (Unity) GetShaderCompilerPerThreadInternal
0x00007FF6288FD474 (Unity) ShaderCompilerSupportsRequirements
0x00007FF629F33652 (Unity) GetSerializedSubProgramForShaderSnippet
0x00007FF627F0A942 (Unity) CompileSingleVariantJob
0x00007FF627F0A678 (Unity) CommitVariantCompileJob
-
AaronZurawski
Mar 12, 2021 19:57
This can also happen if you're running Unity under a service on a CPU with a large amount of cores, as is commonplace in CI/CD.
We were able to resolve this issue by increasing the amount of non-interactive sessions allowed by windows as explained here: https://stackoverflow.com/questions/17472389/how-to-increase-the-maximum-number-of-child-processes-that-can-be-spawned-by-a-w/17472390#17472390
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Resolution Note (fix version 2021.2):
Fixed in 2021.2.0a10, now instead of crashing, the Editor will have a popup indicating the users that there was a problem during installation, no file access, or antivirus blocking files.
Resolution Note (fix version 2021.1):
Fixed in 2021.1.1f1
Resolution Note (fix version 2020.3):
Fixed in 2020.3.2f1
Resolution Note (fix version 2019.4):
Fixed in 2019.4.23f1