[Bug 1783200] Re: [Lenovo Miix 310, Ubuntu 18.04] Audio no longer working

[Expired for pulseaudio (Ubuntu) because there has been no activity for 60 days.] ** Changed in: pulseaudio (Ubuntu) Status: Incomplete => Expired -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu.

[Bug 1783200] Re: [Lenovo Miix 310, Ubuntu 18.04] Audio no longer working

** Tags added: realtime ** Bug watch removed: freedesktop.org Bugzilla #100488 https://bugs.freedesktop.org/show_bug.cgi?id=100488 -- 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:

[Bug 1783200] Re: [Lenovo Miix 310, Ubuntu 18.04] Audio no longer working

That last link has moved. It's now: https://gitlab.freedesktop.org/groups/pulseaudio/-/issues -- 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

[Bug 1783200] Re: [Lenovo Miix 310, Ubuntu 18.04] Audio no longer working

Great insight there about RLIMIT_RTTIME. It appears that yes indeed pulseaudio is unique in that it has a self- imposed RLIMIT_RTTIME of 20 microseconds. That is also configured in /etc/pulse/daemon.conf: ; rlimit-rttime = 20 Normal processes have no such limit. It appears you should

[Bug 1783200] Re: [Lenovo Miix 310, Ubuntu 18.04] Audio no longer working

I'm also attaching the contents of /var/log/syslog for a desktop session with 'log-level = debug' in PA's daemon.conf file, if it helps. ** Attachment added: "syslog.pa.debug.xz" https://bugs.launchpad.net/ubuntu/+source/pulseaudio/+bug/1783200/+attachment/5168664/+files/syslog.pa.debug.xz

[Bug 1783200] Re: [Lenovo Miix 310, Ubuntu 18.04] Audio no longer working

I can get other processes to produce core dumps, but pulseaudio is not producing any. Given PA stops dying when I add 'realtime-scheduling = no' to /etc/pulse/daemon.conf, this makes me think that the process is hitting either RLIMIT_RTTIME or RLIMIT_CPU, which would cause the kernel to send

[Bug 1783200] Re: [Lenovo Miix 310, Ubuntu 18.04] Audio no longer working

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

[Bug 1783200] Re: [Lenovo Miix 310, Ubuntu 18.04] Audio no longer working

I don't believe that'll work because pulseaudio is getting a SIGKILL, not a SIGABRT, , so apport will never receive a coredump anyway. I did a bit more research and came across . I updated /etc/pulse/daemon.conf, adding 'realtime-scheduling =

[Bug 1783200] Re: [Lenovo Miix 310, Ubuntu 18.04] Audio no longer working

Please also verify that you see no devices, or just the dummy device in: Settings > Sound If pulseaudio is indeed crashing for you then that's what we need to debug. Please: 1. Apply the workaround from bug 994921. 2. Look in /var/crash for crash files and if found run: ubuntu-bug

[Bug 1783200] Re: [Lenovo Miix 310, Ubuntu 18.04] Audio no longer working

Yup, pulseaudio doesn't start at all. When I run it with 'pulseaudio -vv' to get the debug output, it ends with a SIGKILL. There's no daemon running. Here's a bug that I believe might be connected, and I commented on it before: https://bugs.launchpad.net/ubuntu/+source/alsa- driver/+bug/1759942

[Bug 1783200] Re: [Lenovo Miix 310, Ubuntu 18.04] Audio no longer working

Thanks for the bug report. This part of your logs looks most suspicious: Pulseaudio: Installed - Yes (/usr/bin/pulseaudio) Running - No Can you please take a screenshot (Alt+PrtSc) or a photo of your Settings > Sound dialog and attach it here? Please also open a terminal and run: