Comment 25 for bug 1872122

> In kernel v < 4.19 the "normal" BLE commands work.
> In kernel v > 4.19 only the BLE extended (BT 5.0) commands work.
..
> So it doesn't seem to be an issue in kernel

What? That indicates it is a problem with the kernel, doesn't it? The desired behaviour exists in previous versions but is broken in current versions where the only component changing is the kernel version. I too am seeing this and specifically with the AC 9560's Bluetooth's BLE on a 4.19 kernel - I am unable to scan or query any BLE devices with this hw and kernel now.