On 18/11/2024 11:35, Ignas Lapėnas wrote:


> https://wiki.archlinux.org/title/Bluetooth#bluetoothctl:_No_default_controller_available
> Since you're with guix, journalctl command should be replaced with
> something like this.
> sudo cat /var/log/messages | grep hci
> to check if you're blocked by rfkill the command should simply be rfkill

Well, the good news is that /var/log/messages contains an error message 
that the ALW page you cite suggests a solution for.  The bad news is 
that the solution is "remove all power sources to force the device to 
reload the firmware".  This box is a laptop, and it doesn't look like 
disconnecting the battery is going to be any straightforward operation. 
Unless: the Bluetooth controller I'm trying to use is a USB dongle, can 
I achieve the same effect by just pulling it out of the USB port?