0

I have recently started using a new Ubuntu desktop and it does not come with a Bluetooth adapter. I am using the UB500 from tp-link. After plugging it in I could not see any devices to connect to so I followed Bluetooth scan doesn't detect any device on Ubuntu 21.10. Everything was running fine until suddenly yesterday I unplugged the adapter while the computer was running and from then I am unable to use the adapter.

I tried following the document again but this time it's throwing an error when

~$ modprobe btusb
modprobe: ERROR: could not insert 'btusb': Operation not permitted

~$ lsmod | grep -i bt and: sudo dmesg | grep bt
grep: and:: No such file or directory
grep: sudo: No such file or directory
grep: dmesg: No such file or directory
aijax
  • 1
  • 5
  • The is because of SecureBoot, disable it in the BIOS settings. – Error404 Feb 23 '22 at 13:34
  • 4
    Try sudo modprobe btusb. – chili555 Feb 23 '22 at 13:40
  • sudo modprobe btusb modprobe: ERROR: could not insert 'btusb': Invalid argument. This is my work desktop, I don't think I am permitted to do that. – aijax Feb 23 '22 at 16:20
  • Please edit your question to show the result of these terminal commands: lsmod | grep -i bt and: sudo dmesg | grep bt Welcome to Ask Ubuntu. – chili555 Feb 23 '22 at 16:36
  • @chili555 I've updated the results. Can you please take a look at it? Thanks for the welcome – aijax Feb 24 '22 at 15:07
  • These are two seperate commands; not one command with the word 'and'. Please try again. – chili555 Feb 24 '22 at 17:05
  • I was trying to install Tp-link UB500 using this link. I am facing the same issue: 
    # sudo modprobe -v btusb

insmod /lib/modules/5.15.0-48-generic/kernel/drivers/bluetooth/btusb.ko 
modprobe: ERROR: could not insert 'btusb': Invalid argument

    I have run those commands

    # lsmod | grep -i bt

btrtl                  24576  0
btbcm                  24576  0
btintel                40960  0
bluetooth             704512  10 btrtl,btintel,btbcm,bnep
    – Virat Raaz Oct 08 '22 at 10:00
  • sudo dmesg | grep bt 
    [    2.253949] btusb: loading out-of-tree module taints kernel.
[    2.278328] btusb: disagrees about version of symbol btbcm_setup_patchram
[    2.278331] btusb: Unknown symbol btbcm_setup_patchram (err -22)
    – Virat Raaz Oct 08 '22 at 10:00
  • while making btusb.ko some message appeared CC [M] /home/user/linux-5.15/drivers/bluetooth/btusb.mod.o LD [M] /home/user/linux-5.15/drivers/bluetooth/btusb.ko BTF [M] /home/user/linux-5.15/drivers/bluetooth/btusb.ko Skipping BTF generation for /home/user/linux-5.15/drivers/bluetooth/btusb.ko due to unavailability of vmlinux – Virat Raaz Oct 08 '22 at 10:24
  • @ViratRaaz Please start your own new question. – chili555 Oct 08 '22 at 12:02
  • @chili555 Pipewire solved my problem. Thank you for your kind support. – Virat Raaz Oct 09 '22 at 00:41

0 Answers0