I only tested bionic, the stereo playback works seemingly flawless. The low volume problem is indeed still present, but as Dave pointed out, changing the headphone gain from -16 (50%) to 0 (100%) solves it (Thanks Dave!).
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1758736 Title: [USB-Audio - SteelSeries Arctis 7, playback] No stereo playback only mono playback To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/pulseaudio/+bug/1758736/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs