PiCamera()错误我该如何解决这个问题？

Question

我用的是树莓Pi 3型号的B+。

如果我运行vcgencmd get_camera，它会给我supported=1 detected=1

如果我运行raspistill -o test.jpg，将出现test.jpg文件，但会给出以下消息

mmal: mmal_vc_shm_init: could not initialize vc shared memory service
mmal: mmal_vc_component_create: failed to initialise shm for 'vc.camera_info' (7:EIO)
mmal: mmal_component_create_core: could not create component 'vc.camera_info' (7)
mmal: Failed to create camera_info component

然后，我试着运行下面的python代码，但是它给了我这个错误消息。

from picamera import PiCamera
camera = PiCamera()

错误：

mmal: mmal_vc_shm_init: could not initialize vc shared memory service
mmal: mmal_vc_component_create: failed to initialise shm for 'vc.camera_info' (7:EIO)
mmal: mmal_component_create_core: could not create component 'vc.camera_info' (7)
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/usr/lib/python3/dist-packages/picamera/camera.py", line 367, in __init__
    with mo.MMALCameraInfo() as camera_info:
  File "/usr/lib/python3/dist-packages/picamera/mmalobj.py", line 2346, in __init__
    super(MMALCameraInfo, self).__init__()
  File "/usr/lib/python3/dist-packages/picamera/mmalobj.py", line 633, in __init__
    prefix="Failed to create MMAL component %s" % self.component_type)
  File "/usr/lib/python3/dist-packages/picamera/exc.py", line 184, in mmal_check
    raise PiCameraMMALError(status, prefix)
picamera.exc.PiCameraMMALError: Failed to create MMAL component b'vc.camera_info': I/O error

在/boot/config.txt里面我已经有了

start_x=1
gpu_mem=128 

Answer 1

我的解决方案是重写引导目录。

directory.

• Restart

• 在空磁盘或sd卡上安装新的Raspberry操作系统。

• 将除config.txt和commandline.txt以外的所有文件和文件夹从新的/boot目录复制到旧的/boot your PI.

。