Error when adding a face (since Ubuntu 20.04)

See original GitHub issue

Since I upgraded to Ubuntu 20.04, Howdy does no longer work. I reinstalled Howdy (this worked), but when I try to add a face I get this error (after entering the name):

Traceback (most recent call last):
  File "/usr/local/bin/howdy", line 95, in <module>
    import cli.add
  File "/usr/lib/security/howdy/cli/add.py", line 99, in <module>
    video_capture = VideoCapture(config)
  File "/usr/lib/security/howdy/recorders/video_capture.py", line 45, in __init__
    self._create_reader()
  File "/usr/lib/security/howdy/recorders/video_capture.py", line 115, in _create_reader
    self.internal = cv2.VideoCapture(
AttributeError: module 'cv2' has no attribute 'VideoCapture'
Exception ignored in: <function VideoCapture.__del__ at 0x7f05e9543700>
Traceback (most recent call last):
  File "/usr/lib/security/howdy/recorders/video_capture.py", line 55, in __del__
    self.internal.release()
AttributeError: 'NoneType' object has no attribute 'release'

I double checked that I selected the right camera (the IR one, not the normal webcam) during the Howdy installation.

Issue Analytics

State:
Created 3 years ago
Comments:24 (2 by maintainers)

Top GitHub Comments

27reactions

mdnahascommented, Jul 8, 2020

For newbies:

I checked which device was the IR camera using ffmpeg. Mine was /dev/video2. ffmpeg -f v4l2 -list_formats all -i /dev/video2 The command spits a lot of output, but the last line says “Greyscale”: [video4linux2,v4l2 @ 0x562d4bfa59c0] Raw : gray : 8-bit Greyscale : 340x340

Next, I ran sudo howdy config and changed the value of “device_path” to “/dev/video2”.

After that, “sudo howdy add” ran correctly. I tested with “sudo howdy test”. (Actually, on my system, I need “sudo QT_X11_NO_MITSHM=1 howdy test”.)

If you care, I’ve got a Dell XPS 13 9370.

3reactions

juandisaycommented, Feb 8, 2021

you can try sudo howdy config then changes, device_path = /dev/video0 it works for me in ubuntu 18.04 LTS