wifi.powersave option reverts to default after host reboot

[vturekhanov]

Describe the issue you are experiencing

Exploring issue #3826 I tried to change powersave mode for my wireless adapter using nmcli tool and direct edit connection file using vi (/etc/NetworkManager/system-connections/Supervisor\ wlp1s0.nmconnection). Setting powersave=2 was successful in both cases but after host reboot I see powersave option reverts to its default value: powersave=1. So, I can't change powersave option.

What operating system image do you use?

generic-x86-64 (Generic UEFI capable x86-64 systems)

What version of Home Assistant Operating System is installed?

14.1

Did the problem occur after upgrading the Operating System?

No

Hardware details

G3 Mini PC Alder Lake N100 Intel 12th DDR4 8GB RAM 256GB ROM WiFi BT
https://aliexpress.ru/item/1005006340106437.html

Steps to reproduce the issue

1. Set powersave option to 2 in the wifi section of network connection in the connection configuration file (/etc/NetworkManager/system-connections/Supervisor\ wlp1s0.nmconnection in my case).
2. Reboot the host.
3. View connection configuration file.

Anything in the Supervisor logs that might be useful for us?

n/a

Anything in the Host logs that might be useful for us?

n/a

System information

System Information

version	core-2025.1.4
installation_type	Home Assistant OS
dev	false
hassio	true
docker	true
user	root
virtualenv	false
python_version	3.13.1
os_name	Linux
os_version	6.6.66-haos
arch	x86_64
timezone	Asia/Almaty
config_dir	/config

Home Assistant Cloud

logged_in	false
can_reach_cert_server	ok
can_reach_cloud_auth	ok
can_reach_cloud	ok

Home Assistant Supervisor

host_os	Home Assistant OS 14.1
update_channel	stable
supervisor_version	supervisor-2024.12.3
agent_version	1.6.0
docker_version	27.2.0
disk_total	234.0 GB
disk_used	5.9 GB
healthy	true
supported	true
host_connectivity	true
supervisor_connectivity	true
ntp_synchronized	true
virtualization
board	generic-x86-64
supervisor_api	ok
version_api	ok
installed_addons	Matter Server (7.0.0)

Dashboards

dashboards	2
resources	0
views	0
mode	storage

Recorder

oldest_recorder_run	January 25, 2025 at 7:59 AM
current_recorder_run	January 27, 2025 at 11:19 AM
estimated_db_size	7.17 MiB
database_engine	sqlite
database_version	3.47.1

Additional information

No response

[vturekhanov]

Workaround: set powersave=2 in the connection file and make it immutable (chattr +i).
After rebooting the host got one warning concerning unable writing to the connection file: Operation not permitted.
Seems now wireless network works good.

[dgdavid]

I'm experiencing the same issue. Thanks a lot for sharing the workaround. I'll check if it works for me too :)

[vturekhanov]

So, HAOS tries to update connection settings file during host boot. In this case immutable attribute prevents it.

2025-01-28 13:43:56.289 homeassistant NetworkManager[438]: <warn>  [1738071836.2897] keyfile: commit: failure to write 539c2326-a82f-45a6-97a6-82fc242d30da ((null)) to "/etc/NetworkManager/system-connections/wlp1s0.nmconnection": error writing to file '/etc/NetworkManager/system-connections/wlp1s0.nmconnection': failed rename /etc/NetworkManager/system-connections/wlp1s0.nmconnection.HJL802 to /etc/NetworkManager/system-connections/wlp1s0.nmconnection: Operation not permitted
2025-01-28 13:43:56.290 homeassistant NetworkManager[438]: <info>  [1738071836.2897] audit: op="connection-update" uuid="539c2326-a82f-45a6-97a6-82fc242d30da" name="wlp1s0" args="802-11-wireless.powersave,connection.id,connection.timestamp" pid=1079 uid=0 result="fail" reason="failed to update connection: error writing to file '/etc/NetworkManager/system-connections/wlp1s0.nmconnection': failed rename /etc/NetworkManager/system-connections/wlp1s0.nmconnection.HJL802 to /etc/NetworkManager/system-connections/wlp1s0.nmconnection: Operation not permitted"

Why powersave option overwrites? How it corresponds with HAOS network configuration documentation? https://github.com/home-assistant/operating-system/blob/dev/Documentation/network.md#powersave