You're right; a SIGKILL will not leave any trace. However you also mentioned that happened when you ran it manually so I'm wondering if maybe a different crash is occurring when the daemon is started formally by the system. Hoping anyway.
We need to continue on the assumption that this is a debuggable crash and not caused by SIGKILL. So please complete the steps in comment #4. If you can then find no further information then unfortunately you're left to figure out what is killing the pulseaudio process. My first guess would be maybe the kernel OOM killer, if the system is low on memory. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1783200 Title: [Lenovo Miix 310, Ubuntu 18.04] Audio no longer working To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/pulseaudio/+bug/1783200/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
