(In reply to Takashi Iwai from comment #4) > Is it a regression? If yes, we can try to narrow down the regression range > and identify the cause. > > Otherwise, it's an upstream problem, and better to report there. > We can help backporting the fix in distro side, of course, so feel fee to > put me to Cc. Yeah I'll try to report upstream then as it's not a regression in my case, it's never worked properly for the past ~two years since I've had this laptop. Thank you!