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Under Consideration for 2021.3.X, 2022.3.X, 2023.1.X, 2023.2.X

In Progress in 2023.3.X



Found in





Issue ID




[Mobile] Player freezes on "UnityClassic::Baselib_SystemFutex_Wait" or silently crashes



How to reproduce:
1. Open the "IN_45267" project
2. In the Build Settings "Run Device" dropdown select the desired device
3. Press Build And Run
4. Force stop the Player after 5-10 minutes and run it again (repeat a couple of times)

Expected result: Player doesn't crash or freeze
Actual result: Player crashes or freezes

Reproducible with: 2021.3.28f1, 2022.3.4f1, 2023.1.3f1, 2023.2.0a22

Testing environment: Windows 10 Pro

Reproducible on these devices (crash):
VLNQA00178, Xiaomi Redmi Note 4 (Redmi Note 4), Android 6.0, CPU: MediaTek Helio X20 MT6797M, GPU: Mali-T880
VLNQA00489, Htc 10 (HTC 10), Android 6.0.1, CPU: Snapdragon 820 MSM8996, GPU: Adreno (TM) 530
VLNQA00363, Samsung Galaxy Z Fold2 5G (SM-F916B), Android 11, CPU: Snapdragon 865 SM8250, GPU: Adreno (TM) 650 (only when using Vulcan Graphics API)
VLNQA00494 - iPhone 14 Pro Max, 16.3.1 iOS
VLNQA00358 - iPhone 12, 14.1 iOS
VLNQA00392 - iPad (9th generation), 15.0 iOS
VLNQA00310 - iPad Pro 12.9", 13.4.1 iOS

Reproducible on these devices (freeze):
VLNQA00267, Samsung Galaxy S10+ (SM-G975F), Android 12, CPU: NOT FOUND, GPU: Mali-G76
Samsung S20 5G (user reported)

Not reproducible on this device:
VLNQA00120, Google Pixel 2 (Pixel 2), Android 8.1.0, CPU: Snapdragon 835 MSM8998, GPU: Adreno (TM) 540

Stack Trace from user:
UnityClassic::Baselib_SystemFutex_Wait(int*, int, unsigned int)
ujob_wait_for(ujob_control_t*, ujob_handle_t, int)
CompleteFenceInternal(JobFence&, WorkStealMode)
Camera::CustomCull(CameraCullingParameters const&, CullResults&, bool)

- I'm able to reproduce freeze only with 2023.1.3f1 and 2023.2.0a22 with Samsung Galaxy S10+
- Not reproducible on Windows Standalone and WebGL

Comments (3)

  1. hasindunethmirasiriwardana

    Aug 26, 2023 10:56

    unity 2023.20b6 not instal

  2. pablo_leban

    Jul 17, 2023 07:37

    Game breaking issue. Getting lots of 1 star reviews because of this bug.

  3. fun_unity_dev_01

    Jul 12, 2023 05:54

    We are also experiencing freezing issues on Android builds.

    Reproducible with: 2022.3.2f1

    Reproducible on these devices (freeze): Samsung Galaxy Note10+ 5G

    Not reproducible on this device: Samsung Galaxy A34, Samsung Galaxy Z Fold 4

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