Kivy 不工作，MESA-LOADER：无法打开虹膜和 swrast

Question

我已经在 Ubuntu 21.10 上为我的 python 3.17 安装了 Kivy 2.1。 我正在用一个简单的方法测试该库，但有一些错误，它找不到 iris 和 swrast 库，请参阅下面的代码和错误并提出建议。谢谢

代码：

"""
This is Mobile App designed to send email using Kivy lib.
"""

from kivy.app import App
from kivy.lang import Builder
from kivy.uix.screenmanager import ScreenManager, Screen

Builder.load_file("interface.kv")

class LoginScreen(Screen):
    pass

class RootWidget(ScreenManager):
    pass

class MainApp(App):
    def build(self):
        return RootWidget()

if __name__ == "__main__":
    MainApp().run()

运行后出错：python main.py

[INFO   ] [Logger      ] Record log in /home/fredbitenyo/.kivy/logs/kivy_22-02-25_11.txt [INFO   ] [Kivy      ] v2.1.0rc1 [INFO   ] [Kivy        ] Installed at "/home/fredbitenyo/Downloads/udemy/github_codes/kivy_env/lib/python3.7/site-packages/kivy/__init__.py" [INFO   ] [Python      ] v3.7.3 (default, Mar 27 2019, 22:11:17)  [GCC
7.3.0] [INFO   ] [Python      ] Interpreter at "/home/fredbitenyo/Downloads/udemy/github_codes/kivy_env/bin/python" [INFO   ] [Logger      ] Purge log fired. Processing... [INFO   ] [Logger      ] Purge finished! [INFO   ] [Factory     ] 189 symbols loaded [INFO   ] [Image       ] Providers: img_tex, img_dds, img_sdl2, img_pil (img_ffpyplayer ignored) [INFO   ] [Window      ] Provider: sdl2 libGL error: MESA-LOADER: failed to open iris: /usr/lib/dri/iris_dri.so: cannot open shared object file: No such file or directory (search paths /usr/lib/x86_64-linux-gnu/dri:\$${ORIGIN}/dri:/usr/lib/dri, suffix
_dri) libGL error: failed to load driver: iris libGL error: MESA-LOADER: failed to open swrast: /home/fredbitenyo/anaconda3/lib/libstdc++.so.6: version `GLIBCXX_3.4.29' not found (required by /usr/lib/dri/swrast_dri.so) (search paths /usr/lib/x86_64-linux-gnu/dri:\$${ORIGIN}/dri:/usr/lib/dri, suffix
_dri) libGL error: failed to load driver: swrast X Error of failed request:  BadValue (integer parameter out of range for operation)   Major opcode of failed request:  149 (GLX)   Minor opcode of failed request:  3 (X_GLXCreateContext)   Value in failed request:  0x0   Serial number of failed request:  100   Current serial number in output stream:  101```

Answer 1

修复问题，我刚刚删除了符号链接 /home/fredbitenyo/anaconda3/lib/libstdc++.so.6 -> libstdc++.so.6.0.25 ，该链接造成了冲突，因为它指向较低版本。

Answer 2

/home/volpato/anaconda3/lib/libstdc++.so.6，除了 anaconda3 使用 pycharm 的功能外，没有 Linux Mint，价值很高！