My wifi card is an Intel Killer AX1650s. Since a few weeks or months, I can't tell for sure, if I enable bluetooth and connect a bluetooth headphone, my wifi speed is very low, to the point I can't work at all. I tried to debug the issue by trying to set bt_coex_active=0, but it did not make any improvements. Reproducible: Always Steps to Reproduce: 1.Connect to a wifi access point 2 Do a speed test and note the results 3.Enable wifi & generate any bluetooth traffic. 4.Do a speed test and compare with previous results Actual Results: I get > 100mbps when bluetooth is disabled compared to < 100kbps when bluetooth is enabled. Expected Results: Speed test should be the same when bluetooth is enabled. My wifi card is an Intel Killer AX1650s.
> Since a few weeks or months, I can't tell for sure, if I enable bluetooth > and connect a bluetooth headphone, my wifi speed is very low, to the point I > can't work at all. Unfortunately you're going to need to do some bisect between kernel/firmware versions to work out when it regressed. This bug report is way too vague to actually be able to action anything here.
It turns out one of the two antennas were disconnected inside my laptop.