crashes on start - Ubuntu 20.10 - errors with zeroconf and traceback error in cast.py

[RichardODonoghue]

richard@SurfaceGo2:~$` sudo mkchromecast
Mkchromecast v0.3.8.1
Creating Pulseaudio Sink...
Open Pavucontrol and Select the Mkchromecast Sink.
Starting Local Streaming Server
[Done]
Selected backend: parec
Selected audio codec: mp3
Default bitrate used: 192k
Default sample rate used: 44100Hz.
 * Serving Flask app "mkchromecast.audio" (lazy loading)
PID of main process: 45213
 * Environment: production
PID of streaming process: 45219
   WARNING: This is a development server. Do not use it in a production deployment.
   Use a production WSGI server instead.
 * Debug mode: off
Exception in thread zeroconf-Engine:
Traceback (most recent call last):
  File "/usr/lib/python3.8/threading.py", line 932, in _bootstrap_inner
 * Running on http://0.0.0.0:5000/ (Press CTRL+C to quit)
    self.run()
  File "/usr/lib/python3/dist-packages/zeroconf/__init__.py", line 1228, in run
    reader.handle_read(socket_)
  File "/usr/lib/python3/dist-packages/zeroconf/__init__.py", line 1301, in handle_read
    self.zc.handle_response(msg)
  File "/usr/lib/python3/dist-packages/zeroconf/__init__.py", line 2501, in handle_response
    with self._handlers_lock:
AttributeError: 'Zeroconf' object has no attribute '_handlers_lock'
Traceback (most recent call last):
  File "/usr/share/mkchromecast/mkchromecast/cast.py", line 113, in _get_chromecasts
    return list(pychromecast.get_chromecasts_as_dict().keys())
AttributeError: module 'pychromecast' has no attribute 'get_chromecasts_as_dict'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/usr/bin/mkchromecast", line 283, in <module>
    mk()
  File "/usr/bin/mkchromecast", line 53, in __init__
    self.audio_linux()
  File "/usr/bin/mkchromecast", line 72, in audio_linux
    self.cc.initialize_cast()
  File "/usr/share/mkchromecast/mkchromecast/cast.py", line 135, in initialize_cast
    self.cclist = self._get_chromecasts()
  File "/usr/share/mkchromecast/mkchromecast/cast.py", line 115, in _get_chromecasts
    self._chromecasts_by_name = {c.name: c for c in
  File "/usr/share/mkchromecast/mkchromecast/cast.py", line 115, in <dictcomp>
    self._chromecasts_by_name = {c.name: c for c in
AttributeError: 'list' object has no attribute 'name'

[RichardODonoghue]

Update:

I managed to fix the zeroconf errors by updating zeroconf in PIP.

Now I just have the second error left

[ebrahimradi]

I faced this issue also:

`$ mkchromecast
Mkchromecast v0.3.8.1
Creating Pulseaudio Sink...
Open Pavucontrol and Select the Mkchromecast Sink.
Starting Local Streaming Server
[Done]
Selected backend: parec
Selected audio codec: mp3
Default bitrate used: 192k
Default sample rate used: 44100Hz.
PID of main process: 4468

• Serving Flask app "mkchromecast.audio" (lazy loading)
• Environment: production
  PID of streaming process: 4606
  WARNING: This is a development server. Do not use it in a production deployment.
  Use a production WSGI server instead.
• Debug mode: off
• Running on http://0.0.0.0:5000/ (Press CTRL+C to quit)
  Traceback (most recent call last):
  File "/usr/share/mkchromecast/mkchromecast/cast.py", line 113, in _get_chromecasts
  return list(pychromecast.get_chromecasts_as_dict().keys())
  AttributeError: module 'pychromecast' has no attribute 'get_chromecasts_as_dict'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
File "/usr/bin/mkchromecast", line 283, in
mk()
File "/usr/bin/mkchromecast", line 53, in init
self.audio_linux()
File "/usr/bin/mkchromecast", line 72, in audio_linux
self.cc.initialize_cast()
File "/usr/share/mkchromecast/mkchromecast/cast.py", line 135, in initialize_cast
self.cclist = self._get_chromecasts()
File "/usr/share/mkchromecast/mkchromecast/cast.py", line 115, in _get_chromecasts
self._chromecasts_by_name = {c.name: c for c in
File "/usr/share/mkchromecast/mkchromecast/cast.py", line 115, in
self._chromecasts_by_name = {c.name: c for c in
AttributeError: 'list' object has no attribute 'name'`

[ebrahimradi]

more debug info!

mkchromecast --debug
ALSA device name: None.
Google Cast name: None.
backends:  ['ffmpeg', 'avconv', 'parec', 'gstreamer']
ALSA device name: None.
Google Cast name: None.
backends:  ['ffmpeg', 'avconv', 'parec', 'gstreamer']
USER =ebrahim
PATH =/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games:/snap/bin
Mkchromecast v0.3.8.1
:::cast::: sockets method 192.168.1.239
Creating Pulseaudio Sink...
Open Pavucontrol and Select the Mkchromecast Sink.
Starting Local Streaming Server
[Done]
:::audio::: chunk_size, frame_size, buffer_size: 64, 2048, 8192
Selected backend: parec
Selected audio codec: mp3
Default bitrate used: 192k
Default sample rate used: 44100Hz.
:::audio::: command ['lame', '-b', '192', '-r', '-']
 * Serving Flask app "mkchromecast.audio" (lazy loading)
 * Environment: production
   WARNING: This is a development server. Do not use it in a production deployment.
PID of main process: 4928
PID of streaming process: 4936
   Use a production WSGI server instead.
 * Debug mode: off
 * Running on http://0.0.0.0:5000/ (Press CTRL+C to quit)
Traceback (most recent call last):
  File "/usr/share/mkchromecast/mkchromecast/cast.py", line 113, in _get_chromecasts
    return list(pychromecast.get_chromecasts_as_dict().keys())
AttributeError: module 'pychromecast' has no attribute 'get_chromecasts_as_dict'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/usr/bin/mkchromecast", line 283, in <module>
    mk()
  File "/usr/bin/mkchromecast", line 53, in __init__
    self.audio_linux()
  File "/usr/bin/mkchromecast", line 72, in audio_linux
    self.cc.initialize_cast()
  File "/usr/share/mkchromecast/mkchromecast/cast.py", line 135, in initialize_cast
    self.cclist = self._get_chromecasts()
  File "/usr/share/mkchromecast/mkchromecast/cast.py", line 115, in _get_chromecasts
    self._chromecasts_by_name = {c.name: c for c in
  File "/usr/share/mkchromecast/mkchromecast/cast.py", line 115, in <dictcomp>
    self._chromecasts_by_name = {c.name: c for c in
AttributeError: 'list' object has no attribute 'name'

[nilsdeppe]

This is because of an upstream change in pychromecast:
home-assistant-libs/pychromecast@d76c8f1
merged as part of:
home-assistant-libs/pychromecast#385

Edit: this appears to be resolved if you clone the git repo itself rather than using apt to install mkchromecast

This changes the return type of get_chromecasts to a tuple(list, browser) while previously it was just a list. I'm not a python expert so I can't suggest the "best" way to fix, but one workaround is:

    def _get_chromecasts(self):
        # compatibility
        try:
            return list(pychromecast.get_chromecasts_as_dict().keys())
        except AttributeError:
            available_chromecasts = pychromecast.get_chromecasts(
                                             tries=self.tries)
            self._chromecasts_by_name = {c.name: c for c in
                                         (available_chromecasts[0] if
                                         type(available_chromecasts) == tuple
                                          else available_chromecasts)}
            
            return list(self._chromecasts_by_name.keys())

though, it's probably cleaner to check the pychromecast version and make decisions based on that.

Now, there seem to be a few other issues that arise with pychromecast 9.0.0 (or maybe earlier versions, I haven't experimented extensively), where the Chromecast.host object is set to None. I don't know how much of an issue this is, but at face value commenting out:

        # try:
        #     print(colors.options('The IP of ') +
        #           colors.success(self.cast_to) + colors.options(' is:') +
        #           ' ' + self.cast.host)
        # except TypeError:
        #     print(colors.options('The IP of ') +
        #           colors.success(self.cast_to.player_name) +
        #           colors.options(' is:') + ' ' + self.cast_to.ip_address)
        # except AttributeError:
        #     for _ in self.sonos_list:
        #         if self.cast_to in _.player_name:
        #             self.cast_to = _
        #     print(colors.options('The IP of ') +
        #           colors.success(self.cast_to.player_name) +
        #           colors.options(' is:') + ' ' + self.cast_to.ip_address)

at roughly line 312 gets me to the "casting" part, though nothing is actually showing on my chromecast...