I'm having the same issue on a Lenovo Legion 7-15IMHg05. I just got it this week (22nd september) and installed Arch Linux on it straight away. I tried fiddling with alsamixer and pavucontrol settings, no change. I tried different kernel packages (linux 5.8.10, linux-lts 5.4.66, linux-xanmod 5.8.10/11), no dice. I did not update the BIOS yet and the current version is "E9CN32WW(V2.00)", so this probably rules out a BIOS regression.
I'm having the same issue on a Lenovo Legion 7-15IMHg05. I just got it this week (22nd september) and installed Arch Linux on it straight away. I tried fiddling with alsamixer and pavucontrol settings, no change. I tried different kernel packages (linux 5.8.10, linux-lts 5.4.66, linux-xanmod 5.8.10/11), no dice. I did not update the BIOS yet and the current version is "E9CN32WW(V2.00)", so this probably rules out a BIOS regression.
My alsa-info: http:// alsa-project. org/db/ ?f=60beb004225c a38c49bb6a1495e 6cd713a1a4f1e
I did not test the laptop with Windows yet, but I will try to do this soon.