On Mon, Nov 29, 2021 at 05:32:11PM -0600, Bjorn Helgaas wrote: > On Wed, Nov 03, 2021 at 09:58:27PM +0100, Jonas Dreßler wrote: > > The firmware of the 88W8897 PCIe+USB card sends those events very > > unreliably, sometimes bluetooth together with 2.4ghz-wifi is used and no > > COEX event comes in, and sometimes bluetooth is disabled but the > > coexistance mode doesn't get disabled. > > s/sends those events/sends BTCOEX events/ so it reads well without the > subject. > > s/coexistance/coexistence/ > > Is BTCOEX a standard Bluetooth thing? Is there a spec reference that > could be useful here? I've never seen those specs, so this is just > curiosity. I did download the "Bluetooth Core Spec v5.3", which does > have a "Wireless Coexistence Signaling and Interfaces" chapter, but > "BTCOEX" doesn't appear in that doc. > > > This means we sometimes end up capping the rx/tx window size while > > bluetooth is not enabled anymore, artifically limiting wifi speeds even > > though bluetooth is not being used. > > s/artifically/artificially/ > > > Since we can't fix the firmware, let's just ignore those events on the > > 88W8897 device. From some Wireshark capture sessions it seems that the > > Windows driver also doesn't change the rx/tx window sizes when bluetooth > > gets enabled or disabled, so this is fairly consistent with the Windows > > driver. I hadn't read far enough to see that the patch was already applied, sorry for the noise :)
