Bluetooth not working. I switch it on and it does nothing

Asked by Sara Costas Perez

Hi,
I have an Acer Aspire 5 with a partition with Ubuntu. On the partition with Windows I have no problem to pair by bluetooth my earphones. On the partition with Ubuntu, as I am on the menu for bluetooth and I switch it on nothing happens and the screen tells that the bluetooth is off.
I don't have much IT knowledge, I would really appreciate a "to dummies" instruction.
Thanks for your help

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Jeremy (wa113y3s) said :
#1

Post results from terminal for

lsusb; dmesg | egrep -i 'blue|firm'

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Sara Costas Perez (sara32123) said :
#2

sara@sara-Aspire-A515-47:~$ lsusb; dmesg | egrep -i 'blue|firm'
Bus 004 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 003 Device 002: ID 046d:c05b Logitech, Inc. M-U0004 810-001317 [B110 Optical USB Mouse]
Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 001 Device 003: ID 0489:e0e4 Foxconn / Hon Hai Wireless_Device
Bus 001 Device 002: ID 04f2:b773 Chicony Electronics Co., Ltd ACER HD User Facing
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
dmesg: read kernel buffer failed: Operation not permitted

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Sara Costas Perez (sara32123) said :
#3

Thank you for your answer Jeremy

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Sara Costas Perez (sara32123) said :
#4

Someone suggested me to turning off a feature called "fast boot" in the Windows section of the computer as it I did help them with a number of "glitches" after having the dual system.

It worked. The bluetooth worked just fine after turning it off.

This are the instructions

On Windows, => Control Panel => Power options => System Settings => Choose what the power buttons do => Disable the "Fast Startup" option in the "Shutdown Settings" This will cause Windows to fully shutdown.

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Sara Costas Perez (sara32123) said :
#5

I switched off the laptop and when I switch it on again they wouldn't work anymore. I repeted the instructions and they don't work.

I would really appreciate if someone could help, I don't understand how something works and then doens't it seems quite arbitrary.

Thanks for your help

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Bernard Stafford (bernard010) said :
#6

Open terminal[ctl+alt+t] :
lsb_release -a; uname -a
 Paste here the output, then
sudo snap install bluez
If it installs bluez reboot.

Checking for the Bluetooth plug and slot being auto-connected
check in terminal.
snap connections bluez

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Sara Costas Perez (sara32123) said :
#7

sara@sara-Aspire-A515-47:~$ lsb_release -a; uname -a
No LSB modules are available.
Distributor ID: Ubuntu
Description: Ubuntu 22.04.3 LTS
Release: 22.04
Codename: jammy
Linux sara-Aspire-A515-47 6.2.0-33-generic #33~22.04.1-Ubuntu SMP PREEMPT_DYNAMIC Thu Sep 7 10:33:52 UTC 2 x86_64 x86_64 x86_64 GNU/Linux

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Sara Costas Perez (sara32123) said :
#8

ara@sara-Aspire-A515-47:~$ sudo snap install bluez
[sudo] password for sara:
error: cannot perform the following tasks:
- Start snap "bluez" (331) services (systemctl command [start snap.bluez.bluez.service] failed with exit status 1: Job for snap.bluez.bluez.service failed because the control process exited with error code.
See "systemctl status snap.bluez.bluez.service" and "journalctl -xeu snap.bluez.bluez.service" for details.
)

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Jeremy (wa113y3s) said :
#9

Check

mokutil --sb

in terminal as Secure Boot needs to be disabled
Then in terminal

sudo apt install git dkms
git clone https://github.com/jeremyb31/bluetooth-6.2.git
sudo dkms add ./bluetooth-6.2
sudo dkms install btusb/4.1

Reboot

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