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I am trying to activate my Bluetooth Dongle Cambridge Silicon Radio. I did a research and can't find an updated solution, since older solutions aren't working anymore: https://gist.github.com/nevack/6b36b82d715dc025163d9e9124840a07

Here all the info I can get:

Operating System: Ubuntu Studio 21.10 KDE Plasma Version: 5.22.5 KDE Frameworks Version: 5.86.0 Qt Version: 5.15.2 Kernel Version: 5.13.0-39-lowlatency (64-bit) Graphics Platform: X11 Processors: 6 × AMD Ryzen 5 3500X 6-Core Processor Memory: 15.6 GiB of RAM Graphics Processor: AMD Radeon RX 560 Series

lsusb: Bus 001 Device 011: ID 0a12:0001 Cambridge Silicon Radio, Ltd Bluetooth Dongle (HCI mode)

hcidumb: HCI sniffer - Bluetooth packet analyzer ver 5.60 device: hci0 snap_len: 1500 filter: 0xffffffffffffffff

David Paiva
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  • There's a kernel patch mentioned on [this answer](https://askubuntu.com/a/1222944/167115). Also, a [bug mentioned here](https://bugzilla.kernel.org/show_bug.cgi?id=60824) claims that it's working on kernel 5.17 out of the box (it "never worked before" on previous kernels). The only kernel 5.17 for Ubuntu that I could find is [available for 22.04](https://packages.ubuntu.com/search?keywords=linux-image-5.17&searchon=names&suite=all&section=all) which will be officially released in a few days. You might need the headers as well. Although, there is no guarantee 5.17 will work. – mchid Apr 17 '22 at 00:34
  • Type `dmesg | grep -i bluetooth`to see what is going at at boot and then type `mokutil --sb-state` to confirm that secure boot it off. – darth_epoxy Apr 17 '22 at 03:14

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