this post was submitted on 28 Jul 2023
3 points (100.0% liked)

Linux Questions

31 readers
5 users here now

A place to ask Linux-related questions, post advice and suggestions, etc. Any questions pertaining to Linux from novice to greybeard level are welcome. ---- ### Asking Questions: Please provide enough info to for people to actually help you. While there are some things that are generally the same, there is no one "Linux" - every distro has some things they do different and you'll get better answers if you provide some info. And remember the people here are helping you purely out of their own good will - so be nice! If you are encountering a problem, please include: 1. Which distro you are using 2. A brief summary of the problem 3. Any steps you have attempted 4. Relevant details such as hardware specs (see below), application versions, etc. ---- ### Capturing System Specs In almost all cases, posting output from inxi -Fmz - either as in a code block, as a linked file, or as a screenshot - will be appreciated. Some distros may pre-install inxi but on others (such as Fedora), you may need to install it yourself. But we understand that there will be times when you are unable to provide this info (such as with boot problems). The output from inxi info should be safe (especially with the -z option)... But in general,**YOU SHOULD ALWAYS REVIEW OUTPUT AND REMOVE ANY PRIVATE DATA BEFORE POSTING ONLINE** (e.g. replace "Your Name" with `` or something similar - this helps in preventing doxxing, identity theft, and similar issues). - Some common graphical screenshot apps:gnome-screenshot, ksnip, shutter, and flameshot . There are also terminal-based ones like maim and scrot.

founded 1 year ago
 

Linux Mint 21.2 Cinnamon.

I am using powertop to view what is using my laptop battery the most and it seems the bluetooth adaptop is using around 5W. I turned BT off in settings and also in /etc/bluetooth i changed the config file main.conf to not autostart bluetooth.
Even after doing this and a couple restarts, powertop still shows BT using 3-5W power.

pasocon@pasocon:~$ sudo systemctl status bluetooth
[sudo] password for pasocon:
● bluetooth.service - Bluetooth service
Loaded: loaded (/lib/systemd/system/bluetooth.service; enabled; vendor preset: enabled)
Active: active (running) since Fri 2023-07-28 13:09:10 IST; 1h 0min ago
Docs: man:bluetoothd(8)
Main PID: 792 (bluetoothd)
Status: "Running"
Tasks: 1 (limit: 18691)
Memory: 1.9M
CPU: 26ms
CGroup: /system.slice/bluetooth.service
└─792 /usr/lib/bluetooth/bluetoothd

Jul 28 13:09:13 pasocon bluetoothd[792]: Endpoint registered: sender=:1.33 path=/MediaEndpoint/A2DPSink/ap>
Jul 28 13:09:13 pasocon bluetoothd[792]: Endpoint registered: sender=:1.33 path=/MediaEndpoint/A2DPSource/>
Jul 28 13:09:13 pasocon bluetoothd[792]: Endpoint registered: sender=:1.33 path=/MediaEndpoint/A2DPSink/sbc
Jul 28 13:09:13 pasocon bluetoothd[792]: Endpoint registered: sender=:1.33 path=/MediaEndpoint/A2DPSource/>
Jul 28 13:09:13 pasocon bluetoothd[792]: Endpoint registered: sender=:1.33 path=/MediaEndpoint/A2DPSink/sb>
Jul 28 13:09:13 pasocon bluetoothd[792]: Endpoint registered: sender=:1.33 path=/MediaEndpoint/A2DPSource/>
Jul 28 13:09:13 pasocon bluetoothd[792]: Endpoint registered: sender=:1.33 path=/MediaEndpoint/A2DPSink/sb>
Jul 28 13:09:13 pasocon bluetoothd[792]: Endpoint registered: sender=:1.33 path=/MediaEndpoint/A2DPSource/>
Jul 28 13:09:13 pasocon bluetoothd[792]: Endpoint registered: sender=:1.33 path=/MediaEndpoint/A2DPSink/sb>
Jul 28 13:09:13 pasocon bluetoothd[792]: Endpoint registered: sender=:1.33 path=/MediaEndpoint/A2DPSource/>

pasocon@pasocon:~~$ rfkill list
0: phy0: Wireless LAN
Soft blocked: no
Hard blocked: no
1: hci0: Bluetooth
Soft blocked: no
Hard blocked: no
pasocon@pasocon:~~$ bluetoothctl <<< show | grep Powered
Powered: no
pasocon@pasocon:~$

I searched the bios but didnt find any option to disable the bluetooth device. The only advanced options are wrt frequencies and transmit power settings. Does this mean I cant switch off BT completely?

edit: using quotes instead of code because code doesn't work well. i havent striked out anything. the kbin editor is striking out text by itself. o.0

you are viewing a single comment's thread
view the rest of the comments
[–] problembasedperson 3 points 1 year ago (1 children)

Laptops usually have a WiFi network adapter that also supplies Bluetooth capabilities. Check your laptop specs to see if that's the case, because if it is, turning off the adapter would mean you would lose WiFi connectivity too.

[–] [email protected] 2 points 1 year ago

Now that you mention it,i think i saw in bios advanced settingss, the settings were more about wifi than bluetooth. So you're right about both wifi and bt being on same adaptor. Guess there's no real use of disabling bt in the os if it is always on. Thanks for the reply.