Under -55, the system only detects one sound card, it is Intel sound card. Under -58, the system detects two sound cards, Intel sound card and NV sound card.
I guess under -58, the pulseaudio put the NV sound card as card0 while Intel sound card as card1. please run "pactl info" under -58, you will find the default sink is not the sink of intel sound card, please run pactl list sinks pacmd set-default-sink $choosing_intel_sink -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1840796 Title: sound not working in 4.15.0-58, but does in 4.15.0-55 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1840796/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs