Hi Paul, On Mon, Jun 13, 2022 at 06:09:33PM +0200, Paul Menzel wrote: > Am 13.06.22 um 13:07 schrieb Stephan Gerhold: > > The Bluetooth firmware seems to become unresponsive for a while after > > Please mention the device with the problematic firmware. > Will add a comment in v2. It seems to affect pretty much all devices that make use of the "btqcomsmd" driver. > > setting the BD address. At least on recent kernel versions this often > > The commit referenced in the Fixes tag is in Linux 4.9. Can you please name > the oldest Linux kernel version you experienced the problem with. > This is quite hard to say. It definitely became more apparent in the last few months (so at least 5.17+). But since it's a timing problem it's influenced by various side effects. For example, it is less likely to happen the more hardware functionality you enable on a board (because other interrupts come in and might cause the necessary delay). I believe that the problem also exists in some form on Linux 4.9, even though it might be harder to trigger it there. Thanks, Stephan