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.
