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Fixed in 2020.2.X

Duplicate in 2019.4.X, 2020.1.X



Found in





Issue ID




[Linux] Editor does not quit when pressing the X button



How to reproduce:
1. Create a new project
2. Enter Play mode
3. Exit Play mode
4. Press X to quit the Editor

Expected results: Editor shuts down
Actual results: Editor does not shut down, however it becomes unresponsive

- It is not always reproducible, but it's mostly when a lot of work has been done on a beefy project (building, importing, loading)
- Up until 2020.1.0a8 this was always reproducible when the current platform was set to Android
- If this reproduces, the 'Unity' process disappears and the only way to quit the Editor is to kill the 'Main Thread' process
- When and if it crashes, similar stack traces to this are thrown:
#0 0x0055b7b70f3004 in DualThreadAllocator<DynamicHeapAllocator>::ValidateIntegrity(void const*) const
#1 0x0055b7b70e1702 in MemoryManager::Deallocate(void*, MemLabelId const&, char const*, int)
#2 0x0055b7b4e30c97 in dynamic_array<unsigned char, 0ul>::~dynamic_array()
#3 0x0055b7b7735895 in Texture2D::DestroyTexture()
#4 0x0055b7b766e838 in Cubemap::~Cubemap()

As of 12/5/2020 the bug doesn't exhibit crashing anymore

  1. Response avatar

    Resolution Note (fix version 2020.2):

    Fixed in version 2020.2.0a8

Comments (14)

  1. A92ca414c6db4d37b7b9b5658463c05f?d=mm


    Mar 09, 2020 03:52

    wondered if it was a regression of this problem:

    examining system monitor on Mint adb does apear to be running, but closing that does not seem to fix the problem with unity editor itself. after forcing unity editor to close using xkill, and closing unity hub, I've still got a lot of unity processes running.

  2. D855c81853c5e39be00a307356473f96?d=mm


    Feb 26, 2020 16:34

    Happening to me too with Unity 2020.1.0a24.3156 on Ubuntu 18.04 LTS. One workaround is using the command:

    pkill -9 PID

    PID can be found using the command top

    Please fix...

  3. Dd945b706fca7a3ab31f160237970815?d=mm


    Feb 07, 2020 14:32

    Using 2019.3.0f6 I have the same issue, when I close the editor it just hangs and when I force kill it, I can't reopen it cause it says "project already open"

  4. D2f9897ac4e844812d1ed363c96514b4?d=mm


    Aug 19, 2019 08:03

    Stable reproduce on latest Unity Hub, latest Unity Editor and latest Ubuntu (KDE). Always hanging up on exit from Unity Editor.

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