Ubuntu 22.04下Unreal Engine 5启动失败，触发libc.so.6段错误

从Server ISO全新安装的Ubuntu 22.04.3 LTS x86_64 5.15.0-91-generic系统中，Unreal Engine 5（UE5）启动时在libc.so.6中触发SIGSEGV错误，加载屏显示0%后立即崩溃，引擎未指明导致崩溃的具体函数。该引擎此前在Ubuntu 20.04系统中可正常运行，UE5 5.3.1、二进制安装版5.3.2及源码编译的5.3.2版本均存在此问题。

崩溃日志详情 #

[2024.01.06-16.50.17:131][  0]LogInit: Using SDL_WINDOW_VULKAN
[2024.01.06-16.50.17:131][  0]LogVulkanRHI: Display: Built with Vulkan header version 1.3.239
[2024.01.06-16.50.17:132][  0]LogVulkanRHI: Starting Vulkan Profile check for VP_UE_Vulkan_SM5_RT:
MESA-INTEL: warning: Haswell Vulkan support is incomplete
Signal 11 caught.
Malloc Size=262146 LargeMemoryPoolOffset=262162 
CommonUnixCrashHandler: Signal=11
[2024.01.06-16.50.17:463][  0]LogCore: === Critical error: ===
Unhandled Exception: SIGSEGV: invalid attempt to read memory at address 0x0000000000000000

[2024.01.06-16.50.17:463][  0]LogCore: Fatal error!

0x00007fd6dca12520 libc.so.6!UnknownFunction(0x4251f)

[2024.01.06-16.50.17:504][  0]LogExit: Executing StaticShutdownAfterError

NVIDIA显卡信息 #

+-----------------------------------------------------------------------------+
| NVIDIA-SMI 390.157                Driver Version: 390.157                   |
|-------------------------------+----------------------+----------------------+| GPU  Name        Persistence-M| Bus-Id        Disp.A | Volatile Uncorr. ECC || Fan  Temp  Perf  Pwr:Usage/Cap|         Memory-Usage | GPU-Util  Compute M. ||===============================+======================+======================||   0  Quadro K1100M       Off  | 00000000:01:00.0 Off |                  N/A || N/A   46C    P0    N/A /  N/A |    143MiB /  1999MiB |      3%      Default |+-------------------------------+----------------------+----------------------+

Unreal.log内容 #

[2024.01.06-16.50.17:131][  0]LogInit: Using SDL_WINDOW_VULKAN
[2024.01.06-16.50.17:131][  0]LogVulkanRHI: Display: Built with Vulkan header version 1.3.239
[2024.01.06-16.50.17:132][  0]LogVulkanRHI: Starting Vulkan Profile check for VP_UE_Vulkan_SM5_RT:
[2024.01.06-16.50.17:463][  0]LogCore: === Critical error: ===
Unhandled Exception: SIGSEGV: invalid attempt to read memory at address 0x0000000000000000

[2024.01.06-16.50.17:463][  0]LogCore: Fatal error!

0x00007fd6dca12520 libc.so.6!UnknownFunction(0x4251f)

[2024.01.06-16.50.17:504][  0]LogExit: Executing StaticShutdownAfterError

诊断报告 #

Generating report for minidump

Application version 5.3.2.0
 ... built from changelist 0

OS version Linux 5.15.0-91-generic (network name: thicc-pad)
Running 2 x86_64 processors (4 logical cores)
Exception was "SIGSEGV: invalid attempt to read memory at address 0x0000000000000000"

<SOURCE START>
<SOURCE END>

<CALLSTACK START>
libc.so.6!UnknownFunction(0x4251f)

<CALLSTACK END>

0 loaded modules

Report end!

解决方法 #

1. 更新NVIDIA显卡驱动 #

当前使用的390.157驱动版本过旧，Ubuntu 22.04对新驱动支持更好，且UE5 5.x对Vulkan版本要求较高。Quadro K1100M支持的最新官方驱动为470.x系列，执行以下步骤更新：

• 卸载旧驱动：sudo apt purge nvidia-*
• 添加NVIDIA官方PPA：sudo add-apt-repository ppa:graphics-drivers/ppa
• 更新软件源：sudo apt update
• 安装470系列驱动：sudo apt install nvidia-driver-470
• 重启系统：sudo reboot

2. 强制UE5使用OpenGL而非Vulkan #

日志显示UE5默认尝试使用Vulkan渲染，但Haswell核显的Vulkan支持不完善，且旧NVIDIA驱动的Vulkan兼容性也存在问题。可以通过环境变量强制切换到OpenGL：

• 临时生效：启动UE5前执行 export UE_ENABLE_VULKAN=0，再运行引擎
• 永久生效：将上述命令添加到~/.bashrc或~/.profile文件末尾，执行source ~/.bashrc使其生效

3. 安装Server版本缺失的桌面依赖 #

由于是从Server ISO安装的系统，缺少部分桌面环境和图形相关依赖，UE5运行需要这些组件：

• 安装标准桌面环境：sudo apt install ubuntu-desktop
• 安装OpenGL相关库：sudo apt install libgl1-mesa-glx libgl1-mesa-dri
• 安装SDL2依赖：sudo apt install libsdl2-2.0-0

4. 验证编译环境（针对源码编译版本） #

确保源码编译时依赖完整，重新编译前执行：

• 安装UE5编译所需依赖：sudo apt install clang lldb lld g++ cmake ninja-build libssl-dev libcurl4-openssl-dev libexpat1-dev libxcb1-dev libxcb-dri3-dev libx11-xcb-dev libglu1-mesa-dev
• 清理旧编译缓存：./Setup.sh && ./GenerateProjectFiles.sh
• 重新编译：make

内容的提问来源于stack exchange，提问作者Never Man