Kernel 6.12.10-76061203-generic Bluetooth stops working after suspend

[obilodeau]

Upgraded to 24.04 COSMIC Alpha 5

Mar 03 17:32:06 sparkle kernel: Bluetooth: hci0: Opcode 0x0c1a failed: -19
Mar 03 17:32:06 sparkle kernel: Bluetooth: hci0: Error when powering off device on rfkill (-19)
Mar 03 17:32:06 sparkle kernel: Bluetooth: hci0: sending frame failed (-19)
Mar 03 17:32:06 sparkle kernel: Bluetooth: hci0: HCI reset during shutdown failed

I tried modprobe -r a bunch of modules and re-adding them but that didn't work. I also attempted many things noted in the Arch wiki.

I had no Bluetooth problems with 22.04.

Not sure yet if it reliably reproduces. I will report back.

[XargonWan]

Greetings, I got the same issue in alpha 6.
When happens this temporary fixes it:

sudo rmmod btusb
sudo modprobe btusb

However the bluetooth applet will be still in the disabled state, while the bluetooth settings in COSMIC Settings are showing the real status.

Source: https://support.system76.com/articles/bluetooth/

[gabriele2000]

I don't think the kernel is a problem, or the Pop_Os version is a problem.
I don't have this problem, but it's also true that I have BlueZ at version 5.82

Run bluetoothctl --version to know the version

UPDATE: I found a possibly relevant issue in the BlueZ github.
Maybe it's a firmware problem, after all.