Hi Takashi, there appears to be a sound regression for plug-n-play usb-audio DACs with 5.3 kernel.
I'm using the following one: https://www.aliexpress.com/item/33012416525.html?spm=a2g0s.9042311.0.0.4f314c4dv3EF0p which includes SA9023A + ES9018K2M on the chip. When listening to parts of the Unreal Tournament 3 soundtrack the output resembles a bit like: https://www.youtube.com/watch?v=9gq4R6acnBQ Rush - Tom Sawyer (8-bit NES audio render) it immediately made me think of 8-bit audio and the NES. First thought of misconfiguration in the kernel config but then went back to 5.2.17-rt9 (copying the config and only enabling full preemption) and there the output is correct and crystal clear. For each kernel build I need to jump through a few hoops (nvidia driver, zfsonlinux modules, luks, genkernel, etc.) so it'll take a while to build and get it up and running. System is: cat /etc/lsb-release DISTRIB_ID="Gentoo" ~amd64 gcc version 9.2.0 (Gentoo Hardened 9.2.0-r1 p2) GNU ld (Gentoo 2.32 p2) 2.32.0 PCIe related sound doesn't seem to be affected (Xonar DX), it works fine both on 5.3.1 and 5.2.17-rt9 Kind Regards Matthew
