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Date:      Tue, 21 Jul 2026 11:02:27 -0700
From:      Kevin Bowling <kevin.bowling@kev009.com>
To:        Gleb Popov <arrowd@freebsd.org>
Cc:        "freebsd-current@freebsd.org" <freebsd-current@freebsd.org>,  "freebsd-hackers@FreeBSD.org" <freebsd-hackers@freebsd.org>,  "freebsd-stable@FreeBSD.org" <freebsd-stable@freebsd.org>
Subject:   Re: Tragic State of FreeBSD Audio/Sound
Message-ID:  <CAK7dMtC0f7SgU7k6Yvbqg94eksd5UJ1meX7o2_0ukAteZPb-9g@mail.gmail.com>
In-Reply-To: <CALH631mZWS9e9FDXPUT8N8W8WnNnpfYaoPuRyqXhqNTW9=atLw@mail.gmail.com>
References:  <hkttyyfmuguexmliuhmg@ewtn> <sirudbjwrqwlhpzjpfqf@abqv> <CAK7dMtCRpXO71v=AEsrtuQufVJHjN%2B%2BhsN6CT_MkXhMa1-JOzw@mail.gmail.com> <CALH631mZWS9e9FDXPUT8N8W8WnNnpfYaoPuRyqXhqNTW9=atLw@mail.gmail.com>

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On Tue, Jul 21, 2026 at 3:13 AM Gleb Popov <arrowd@freebsd.org> wrote:
>
> On Tue, Jul 21, 2026 at 12:57 PM Kevin Bowling <kevin.bowling@kev009.com> wrote:
> >
> > Only major outstanding work is pipewire/pipewire-pulse don't know how to
> > elevate their priority on FreeBSD and they really should be RT.
>
> What's needed for that?

There are multiple issues:

1) Either a fix for the priority in PipeWire (SCHED_FIFO, don't set a
negative nice.level = -11 as a normal user) or something to make RTKit
work
2) Use the process ID, _gettid().
3) kldload mac_priority and user in realtime group

> > Disable the stock PulseAudio autostart.
>
> Why, what's wrong with it?

Try killing it with KDE running and see what happens.

> >    if [ -z "$XDG_RUNTIME_DIR" ]; then
> >        export XDG_RUNTIME_DIR="/var/run/user/$(id -u)"
> >        mkdir -p "$XDG_RUNTIME_DIR"
> >        chmod 700 "$XDG_RUNTIME_DIR"
> >    fi
>
> This is done by pam_xdg, you shouldn't do that yourself.


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