Hi there
Using Gentoo Linux w/5.4.38 kernel on Intel.
Audacity 2.2.2 Compiled from code
I’m feeding a USB line in from a Fender Acoustic200 amp. Linux sees the amp OK:
/sys/kernel/debug/usb/devices
T: Bus=01 Lev=02 Prnt=02 Port=01 Cnt=01 Dev#= 3 Spd=12 MxCh= 0
D: Ver= 2.00 Cls=00(>ifc ) Sub=00 Prot=00 MxPS=64 #Cfgs= 1
P: Vendor=1ed8 ProdID=0031 Rev= 1.00
S: Manufacturer=FMIC
S: Product=Fender USB Audio Streaming
S: SerialNumber=FFFFFFFEFFFF
C:* #Ifs= 2 Cfg#= 1 Atr=c0 MxPwr=100mA
I:* If#= 0 Alt= 0 #EPs= 0 Cls=01(audio) Sub=01 Prot=00 Driver=(none)
I:* If#= 1 Alt= 0 #EPs= 0 Cls=01(audio) Sub=02 Prot=00 Driver=(none)
I: If#= 1 Alt= 1 #EPs= 1 Cls=01(audio) Sub=02 Prot=00 Driver=(none)
E: Ad=81(I) Atr=05(Isoc) MxPS= 196 Ivl=1ms
But regardless of using Jack or ALSA, none of the device selections sees the input. I think I’ve tried every combination there is. This works OK on Win10 with the same line out from the AMP. Any ideas?