Upcoming moOde 9.0.0 (Bookworm)

[nosferatu_cat]

Just loaded the latest image on a Pi4 with an Allo Boss 2.  I'm assuming that the Boss 2 fix hasn't been implemented yet.  aplay-l shows the Allo HAT as the default audio device and trying to play a file results in an MPD error:

    "Failed to open "ALSA Default" (alsa); Failed to open ALSA device "_audioout": No such device."    

I also loaded it on a Pi 5 with USB audio out and it has worked well.  Looking forward to the production release.

The "Boss 2 fix" was done way back in kernel 6.1.35. If it's not working in Bookworm (kernel 6.6.20) then something else is wrong with the driver. Given that Allo is no longer maintaining their products its up to someone else to debug and possibly fix the driver.

Thanks.

Fortunately, it works fine in v. 8.3.9.  I guess I'll stick with that version for a while.  I realize that Allo has been derelict in supporting its products.  It's too bad.  The Boss 2 measures very well although you can do equally well or better with USB on a Pi 4 or 5.  There are some external DACs for less than $100 that have noise and distortion well below the threshold of audibility.

Yesterday I discovered that the dtparam for Broadcom audio which has always been set to off needs to be on in Bookworm.  I fixed it in my pi 5 yesterday and just now changed it on the pi 4 with the Allo HAT.  It works.  I applied the firmware patch from github last year on this pi so I guess it still applies.  BTW, I emailed Allo last week about this problem and, surprise, have not received a response.  I'm seriously considering giving up on HATs except for transports.  USB and HDMI work well on the pi 4 and 5.  I like the idea of going with an audio solution that doesn't depend on a third party to maintain it.