问 在Ubuntu上使用python MSS库时出现XGetImage失败错误

EN

我在Ubuntu 18.10上使用mss时遇到一个错误(如果这很重要的话)。下面是我的代码(取自文档中的示例，外加一些额外的错误输出)：

import mss
with mss.mss() as sct:
        filename = sct.shot(mon=-1, output='fullscreen.png')
        print(filename)
    except Exception as e:
        print(e, "\n", e.details)

下面是我使用python3.7运行代码时看到的输出。

XGetImage() failed
 {'retval': <mss.linux.LP_XImage object at 0x7fc72d567bf8>, 'args': (<mss.linux.LP_Display object at 0x7fc72db7d1e0>, <mss.linux.LP_Display object at 0x7fc72d567950>, 0, 0, 1920, 1080, 16777215, 2)}

如果有帮助，如果我没有捕捉到异常(stacktrace)，下面是输出

Traceback (most recent call last):
  File "process.py", line 3, in <module>
    filename = sct.shot(mon=-1, output='fullscreen.png')
  File "/home/f41lurizer/.local/share/virtualenvs/poker-TAtsjijf/lib/python3.7/site-packages/mss/base.py", line 140, in shot
    return next(self.save(**kwargs))
  File "/home/f41lurizer/.local/share/virtualenvs/poker-TAtsjijf/lib/python3.7/site-packages/mss/base.py", line 129, in save