Public bug reported:
A recent update to Ubuntu 24.04 seems to have broken gpiozero on Raspberry Pi
5. This seems to be due to a change in the gpiochip number (from 4 to 0) as
outlined in the issue here:
https://github.com/gpiozero/gpiozero/issues/1166
According to the above this seems to have been fixed in a post release for
gpiozero v2.0.1. Can this fix be merged into this package?
My issue is the similar to the one in the link above. I'm not sure which
update/kernel version started this behavior, but I am currently on
Ubuntu 24.04.5 LTS with kernel version Linux 6.8.0-1065-raspi. gpiozero
version 2.0.1-0ubuntu1. gpiozero code previously worked fine prior to
updating the system.
This is my first bug report, so I apologize if I missed anything.
Example:
$ python3
Python 3.12.3 (main, Aug 31 2026, 10:18:26) [GCC 13.3.0] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> import gpiozero
>>> b = gpiozero.Button(3)
/usr/lib/python3/dist-packages/gpiozero/devices.py:300: PinFactoryFallback:
Falling back from lgpio: 'can not open gpiochip'
warnings.warn(
/usr/lib/python3/dist-packages/gpiozero/devices.py:300: PinFactoryFallback:
Falling back from rpigpio: No module named 'RPi'
warnings.warn(
/usr/lib/python3/dist-packages/gpiozero/devices.py:300: PinFactoryFallback:
Falling back from pigpio: No module named 'pigpio'
warnings.warn(
/usr/lib/python3/dist-packages/gpiozero/devices.py:300: PinFactoryFallback:
Falling back from native: unable to open /dev/gpiomem or /dev/mem; upgrade your
kernel or run as root
warnings.warn(
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "/usr/lib/python3/dist-packages/gpiozero/devices.py", line 108, in
__call__
self = super().__call__(*args, **kwargs)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/usr/lib/python3/dist-packages/gpiozero/input_devices.py", line 412, in
__init__
super().__init__(
File "/usr/lib/python3/dist-packages/gpiozero/mixins.py", line 417, in
__init__
super().__init__(*args, **kwargs)
File "/usr/lib/python3/dist-packages/gpiozero/input_devices.py", line 162, in
__init__
super().__init__(
File "/usr/lib/python3/dist-packages/gpiozero/mixins.py", line 243, in
__init__
super().__init__(*args, **kwargs)
File "/usr/lib/python3/dist-packages/gpiozero/input_devices.py", line 79, in
__init__
super().__init__(pin, pin_factory=pin_factory)
File "/usr/lib/python3/dist-packages/gpiozero/devices.py", line 544, in
__init__
super().__init__(pin_factory=pin_factory)
File "/usr/lib/python3/dist-packages/gpiozero/devices.py", line 245, in
__init__
Device.ensure_pin_factory()
File "/usr/lib/python3/dist-packages/gpiozero/devices.py", line 270, in
ensure_pin_factory
Device.pin_factory = Device._default_pin_factory()
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/usr/lib/python3/dist-packages/gpiozero/devices.py", line 302, in
_default_pin_factory
raise BadPinFactory('Unable to load any default pin factory!')
gpiozero.exc.BadPinFactory: Unable to load any default pin factory!
** Affects: gpiozero (Ubuntu)
Importance: Undecided
Status: New
--
You received this bug notification because you are a member of Ubuntu
Bugs, which is subscribed to Ubuntu.
https://bugs.launchpad.net/bugs/2172270
Title:
Kernel update breaks pin factory
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/gpiozero/+bug/2172270/+subscriptions
--
ubuntu-bugs mailing list
[email protected]
https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
