On Mon, 22 Jun 2020 at 10:26, Mikhail Gavrilov <mikhail.v.gavrilov@xxxxxxxxx> wrote: > > Hi folks. > After upgrade kernel to 5.8RC1 (git69119673bd50) my system stopped > playing sound. > In the kernel log, I see the message 'invalid opcode: 0000 [#1] SMP > NOPTI' which probably related to this issue. The problem with no sound was fixed after RC1 git 1b5044021070, but all my USB headsets (ASUS ROG Delta and HyperX Cloud Orbit S) play sound as if in slow-motion. Demonstration: https://youtu.be/-1caV5Yn85E And RC2 git 625d3449788f does not solve this issue. dmesg output: https://pastebin.com/d5Mb2Z2B -- Best Regards, Mike Gavrilov.