The existing (M.2) wifi/bluetooth module works just fine. My issue with bluetooth on Linux is that it's never been able to pass this testcase: Use a bluetooth headset as an audio I/O device. Repeatedly over disconnects/reconnects. For the past few years, it works when you first configure it - beautifully, you can choose your codec and so on - but soon stops doing so even if unpaired and re-paired. Maybe "the year of bluetooth" on Linux has arrived and I've just not tried lately.
I'm with you there; simply so bad experience w/BT. And, it often worked at first OS install but then degraded through kernel, BlueZ, and interface updates until it was unusable. Until recently, when it has been solid enough through most? Fedora 39 and now into 40, though I've found at times the config gets confused, forcing me to delete and re-add the device, sometimes manually, forcibly. But still, been solid enough for my daily use mouse and HD-Aptx audio (among others, all while crossing my fingers as 40 ages).
