Turn off wifi/bt to save power

Autonomous Machines Jetson & Embedded Systems Jetson Xavier NX
1

I want to turn off wifi and BT to save power. How should I turn off wifi/BT power, as well as not load wifi/bt driver and service?

3

Sorry for the late response, have you managed to get issue resolved or still need the support? Thanks

4

I still need the support to turn off wifi and BT. I want wifi and BT driver not to load when start.

5

Hi,

If you just want to wifi/BT driver not load anymore, why not you just remove the wifi card?

If this is not what you want, then share what is the detail usecase. There are multiple ways to disable driver, but “disable it from the beginning” sounds same as direct remove this card out from the device to me.

6

The wifi chip on our board is not easy to remove for now. Myabe we can remove it in next HW version. But for now, I have to turn off wifi/bt from software side.

7

I don’t know what kind wifi driver is in use, but you can just remove it out from tegra_defconfg in kernel and rebuild the kernel.

If it is a kernel module, then just rmmod that module.

8

I checked with our HW team. No wifi/bt chip on our board.

But I can still see wifi and BT modules are loaded. I copied lsmod command result. What cause those modules to be loaded when start?

~$ lsmod
Module Size Used by
fuse 104554 3
bnep 16562 2
zram 25920 4
uvcvideo 90913 0
userspace_alert 5828 0
rtk_btusb 63987 0
btusb 40277 0
btrtl 7318 1 btusb
btbcm 8808 1 btusb
btintel 10771 1 btusb
rtl8822ce 3342355 0
cfg80211 591474 1 rtl8822ce
binfmt_misc 13103 1
nvgpu 1589200 18
ip_tables 19441 0
x_tables 28951 1 ip_tables

9

You can check lsusb and lspci. They will tell.

11

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