Unfortunately your perf doesn't have support for debuginfod, so we don't have any symbols to go off in that perf report.
You can try installing the debug symbol packages manually. Details are in https://wiki.ubuntu.com/DebuggingProgramCrash but for me the following worked, $ echo "deb http://ddebs.ubuntu.com $(lsb_release -cs) main restricted universe multiverse" | sudo tee -a /etc/apt/sources.list.d/ddebs.list $ sudo apt update Now find the version of pipewire installed, $ apt-cache policy pipewire pipewire: Installed: 1.4.5-1ubuntu2 Candidate: 1.4.5-1ubuntu2 Version table: *** 1.4.5-1ubuntu2 1001 1001 http://mirror.mythic-beasts.com/ubuntu questing/main amd64 Packages 100 /var/lib/dpkg/status Then for me, the dbgsym packages to install are, $ sudo apt-get install pipewire-bin-dbgsym=1.4.5-1ubuntu2 $ sudo apt-get install libspa-0.2-modules-dbgsym=1.4.5-1ubuntu2 Now you can try the perf record again, or if that's still not being symbolic for whatever reason, try attaching to the pipewire process with `gdb -p <pidof /usr/bin/pipewire>` and run `bt` at the gdb prompt. It should statistically show the stack that is spinning. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2111972 Title: Pipewire uses 100% of a CPU core. Can not connect to pulseaudio. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/pipewire/+bug/2111972/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
